Ukiah City Council
April 19, 2023

High-Performance Coatings
09960-29 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/09960 (BidSetFinal) D. Copper and brass pipe, fittings, valves, etc.

E. Bronze valves, bearings, bushings, and fasteners.

F. Corrosion resistant special alloys: Inconel, Alloy 20, Hastelloy, etc.

G. Exterior Concrete.

H. Plastic surfaces except coat PVC, CPVC, and other plastic piping system exposed to sunlight.

I. Buried Piping that is encased in concrete or cement mortar.

3.13 QUALITY CONTROL
A. Owner-provided inspection or inspection by others does not limit the Contractor’s or CSA’s responsibilities for quality workmanship or quality control as specified or as required by the CSM’s instructions. Owner inspection is in addition to any inspection required of the Contractor.

B. Owner may perform, or contract with an inspection agency to perform, quality control inspection and testing of the coating work covered by this Section. These inspections may include the following:

1. Inspect materials upon receipt to ensure that the CSM supplied them.

2. Verify that specified storage conditions for the coating system materials, solvents, and abrasives are provided.

3. Inspect and record findings for substrate cleanliness.

4. Inspect and record pH of concrete and metal substrates.

5. Inspect and record substrate profile (anchor pattern).

6. Measure and record ambient air and substrate temperature.

7. Measure and record relative humidity.

8. Check for substrate moisture in concrete.

9. Verify that mixing of coating system materials is in accordance with CSM’s instructions.

10. Inspect, confirm, and record that coating system materials' "pot life" is not exceeded during installation. Inspect to verify that recoat limitations for coating materials are not exceeded.

11. Perform adhesion testing.

12. Measure and record the coating system's thickness.

13. Verify proper curing of the coating system in accordance with the CSM's instructions.

14. Holiday or continuity testing in accordance with NACE SP0188 for coatings that will be immersed or exposed to aggressively corrosive conditions.

C. Contractor shall perform holiday testing in accordance with NACE SP0188 to identify holidays or pinholes needing repair for coating over 100 percent of surfaces:

1. Coated steel that will be immersed or exposed to aggressively corrosive conditions.

2. Coated concrete.

3. Perform holiday tests after proper application and coating system cure.

High-Performance Coatings
09960-30 8660F10 April 2023
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3.14 CORRECTIVE MEASURES
A. Repair pinholes or holidays identified by Holiday Testing as follows:

1. Remove the coating system with a grinder or other suitable power tool.

2. Remove coating system at all pinholes and holidays at least 2 inches diameter around the defect back to expose substrate.

3. Concrete voids: chip back to expose entire cavity in all directions. a. Completely fill void with approved filler/surfacer material using a putty knife or other suitable tool and strike off. Cure per CSM’s recommendations.

4. Aggressively abrade or sand the intact coating system surface at least 3 inches beyond the removal area in all directions to produce a uniform 6- to 8-mil profile in the intact coating system.

5. Vacuum the prepared area to remove all dust, dirt, etc., leaving clean, sound surfaces.

6. Tape to mask the periphery of the prepared intact coating area to prevent coating repair application onto the prepared area.

7. Apply the coating system with enough coats to achieve the specified finish coat thickness over the defect and coating removal area. Feather the coating onto the abraded coated surfaces around the removal area to avoid a lip and to achieve a neat repair outline.

8. Follow curing time between coats as specified by CSM for the site conditions.

Solvent wash and abrasive blast per CSM's instructions, if the maximum recoat time is exceeded.

9. Apply coating at specified dry film thickness.

3.15 CLEANUP
A. Remove surplus materials, protective coverings, and accumulated rubbish after completing coating. Thoroughly clean surfaces and repair overspray or other coating-related damage.

3.16 FINAL INSPECTION
A. Conduct final inspection of coating system work to determine whether it meets specifications requirements.

B. Conduct subsequent final inspection with Engineer to ensure work conforms to contract documents requirements.

C. Mark any rework required.

1. Re-clean and repair, as specified, at no additional cost to the Owner.

END OF SECTION

High-Performance Coatings
09960-Attachment A 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/09960 (BidSetFinal)

ATTACHMENT A - SCHEDULE OF SURFACES TO BE COATED

A.

EPU-M-1 Metals, exterior, non-immersed
EPX-M-2 Metals, interior, non-immersed
EPX-M-3
Metals, immersed; all exterior and interior surfaces of the AWT tanks as indicated on Drawing 85S01
EPX-M-5
Aluminum surfaces in contact with concrete or masonry.

Locations where Alkali-resistant bitumastic is specified.

EPX-M-6-BG Below grade or buried pipes, valves, pits/chambers EPX-C-7-BG Below grade or buried pits/chambers
a. Doors, doorframes, ventilators, louvers, grilles, exposed sheet metal, and flashing. b. Pipe, valves, pipe hangers, supports and saddles, conduit, cable tray hangers, and supports. c. Motors and motor accessory equipment.
d. Drive gear, drive housing, coupling housings, and miscellaneous gear drive equipment. e. Valve and gate operators and stands.
f. Structural steel.
g. Crane and hoist rails.
h. Exterior of tanks and other containment vessels.
i. Mechanical equipment supports, drive units, and accessories. j. Bare electrical equipment: boxes, exposed conduit, and accessories. k. Pumps not submerged.
l. Other miscellaneous metals.
2: Immersed ferrous metal surfaces include:
a. Interior surfaces of ferrous metal tanks.
b. Field priming of ferrous metal surfaces with defective shop-prime coat; including nonsubmerged service. c. Bell rings, underside of manhole covers and frames.
d. Sump pumps, including underside of base plates and submerged suction and discharge piping.
e. Exterior of submerged piping and valves other than stainless steel or PVC piping. f. Submerged pipe supports and hangers.
g. Stem guides.
h. Other submerged iron and steel metal unless specified otherwise.

APPENDIX A
The following schedule is incomplete. Coat unlisted surfaces with same coating system as similar listed surfaces. Contact Engineer for clarification.

Schedule of Surfaces to be Coated
Notes:
1: Non-immersed ferrous metal surfaces include:
09960-1

High-Performance Coatings
09960-Attachment B 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/09960 (BidSetFinal)

ATTACHMENT B - COATING DETAIL SHEETS

Coating System
Coating Material
Substrate
Products: One of the following or equal: Primer Intermediate Coat Finish Coat Carboline Carboguard 890 Carboguard 890 Carbothane 134 VOC International Paint Devran 224V Devran 224V Devthane 379H PPG Amerlock 2VOC Amerlock 2VOC Amershield VOC
Sherwin Williams Macropoxy 646 100 Macropoxy 646 100 Hi Solids Polyurethane 250 Tnemec Series 69 Series 69 Series 1095
Service Condition
Surface Preparation
General
Ferrous Metal
Nonferrous Metal
Galvanized Metal
Surface profile
Ferrous Metal
Nonferrous Metal
Galvanized Metal
System Thickness (Dry Film)
Total
Primer
Intermediate Coat
Finish Coat
Application
Special CTR Training Not required.
4 to 5 mils
4 to 5 mils
2 to 3 mils

1.5 to 2.0 mils

1.5 to 2.0 mils
10 to 13 mils
SSPC-SP16, Brush Blast Cleaning.

SSPC-SP16, Brush Blast Cleaning. Test for surface contaminants.

2.5 to 3.0 mils
Metal
Interior or Exterior, subject to direct sunlight. Non-immersion.

Prepare surfaces as specified in this Section and as follows.

Bare surfaces: SSPC-SP10, Near-White Blast Cleaning.

Shop primed surfaces: SSPC-SP2, Hand Tool Cleaning or SSPC-SP3, Power Tool Cleaning.

Damaged primer or rust: SSPC-SP10, Near White Blast Cleaning and spot prime.

Appendix B
Coating Detail Sheet
EPU-M-1
Two coats epoxy with polyurethane finish coat
09960-2

Coating System
Coating Material
Substrate
Products: One of the following or equal: Primer Intermediate Coat Finish Coat Carboline Carboguard 890 Carboguard 890 Carboguard 890
International Paint Bar-Rust 236 Bar-Rust 236 Bar-Rust 236 PPG Amerlock 2/400 Series Amerlock 2/400 Series Amerlock 2/400 Series Sherwin Williams TankClad HS TankClad HS TankClad HS
Tnemec Series 69 Series 69 Series 69
Service Condition
Surface Preparation
General
Ferrous Metal
Nonferrous Metal
Galvanized Metal
Surface profile
Ferrous Metal
Nonferrous Metal
Galvanized Metal
System Thickness (Dry Film)
Total
Primer
Intermediate Coat
Finish Coat
Application
Special CTR Training
4 to 6 mils
4 to 6 mils
Not required.
12 to 16 mils
4 to 6 mils
Appendix B
Coating Detail Sheet
EPX-M-2
Epoxy
SSPC-SP16, Brush-Off Blast Cleaning.

Metal
Immersed, non-immersed, moderately corrosive environment.

Prepare surfaces as specified in this Section and as follows.

Bare surfaces: SSPC-SP5, White Metal Blast Cleaning.

Shop primed surfaces: SSPC-SP7, Brush-Off Blast Cleaning.

Damaged primer or rust: SSPC-SP5, White Metal Blast Cleaning and spot prime.

SSPC-SP16, Brush-Off Blast Cleaning.

1.0 to 1.5 mils
2 to 4 mils

1.0 to 1.5 mils
09960-3

Coating System
Coating Material
Substrate
Products: One of the following or equal: Primer Intermediate Coat Finish Coat Carboline Carboguard 891VOC Carboguard 891VOC Carboguard 891VOC International Paint Bar-Rust 236 Bar-Rust 236 Bar-Rust 236 PPG Amercoat 240 Amercoat 240 Amercoat 240
Sherwin Williams Tank Clad HS Tank Clad HS Tank Clad HS Tnemec Series 104 Series 104 Series 104
Service Condition
Surface Preparation
General
Ferrous Metal
Nonferrous Metal
Galvanized Metal
Surface profile
Ferrous Metal
Nonferrous Metal
Galvanized Metal
System Thickness (Dry Film)
Total
Primer
Intermediate Coat
Finish Coat
Application
Special CTR Training Not required.
4 to 8 mils

1.5 to 2.0 mils
4 to 8 mils
16 to 20 mils
4 to 8 mils
Metal
Immersed; non-immersed, corrosive environment.

Not for Biogenic Sulfide Corrosion areas in wastewater.

Prepare surfaces as specified in this Section and as follows.

Bare surfaces: SSPC-SP5, White Metal Blast Cleaning.

Shop primed surfaces: SSPC-SP7, Brush-Off Blast Cleaning.

Damaged primer or rust: SSPC-SP5, White Metal Blast Cleaning and spot prime.

2.5 to 3.0 mils

1.5 to 2.0 mils
SSPC-SP16, Brush-Off Blast Cleaning.

SSPC-SP16, Brush-Off Blast Cleaning.

Appendix B
Coating Detail Sheet
EPX-M-3
Epoxy
09960-4

Coating System
Coating Material
Substrate
Products: One of the following or equal: Primer Intermediate Coat Finish Coat Carboline CSM recommended None applied Carbomastic 15
International Paint CSM recommended Bar-Rust 231LV Bar-Rust 231LV PPG No product specified No product specified No product specified Sherwin Williams CSM recommended No product specified No product specified Tnemec CSM recommended Series 135 Series 135
Service Condition
Surface Preparation
General
Ferrous Metal
Nonferrous Metal
Surface profile
Ferrous Metal
Nonferrous Metal
System Thickness (Dry Film)
Total
Primer
Finish Coat
Application
Special CTR Training

2.0 to 2.5 mils
15 to 19 mils
2 to 4 mils
15 mils
Not Required.

1.0 to 1.5 mils
Prepare surfaces as specified in this Section and as follows.

Bare surfaces: SSPC-SP11, Power to Cleaning to Bare Metal.

Shop primed surfaces: SSPC-SP3, Power Tool Cleaning.

Damaged primer or rust: SSPC-SP11, Power to Cleaning to Bare Metal.

SSPC-SP16, Brush-Off Blast Cleaning.

Appendix B
Coating Detail Sheet
EPX-M-5
Epoxy mastic
Metal
Interior, corrosive environment, confined enclosures, where minimal surface preparation is possible. 09960-5

Coating System
Coating Material
Substrate
Products: One of the following or equal: Primer Intermediate Coat Finish Coat Carboline Carboguard 890 Carboguard 890 Carboguard 890
International Paint Bar-Rust 236 Bar-Rust 236 Bar-Rust 236 PPG Amerlock 400 Amerlock 400 Amerlock 400
Sherwin Williams No product specified No product specified No product specified Tnemec Series 69 Series 69 Series 69
Service Condition
Surface Preparation
General
Ferrous Metal
Nonferrous Metal
Galvanized Metal
Surface profile
Ferrous Metal
Nonferrous Metal
Galvanized Metal
System Thickness (Dry Film)
Total
Primer
Intermediate Coat
Finish Coat
Application
General
Special CTR Training
4 to 6 mils
Fill all bugholes with a filler/surfacer compatible with the coating.

Not Required.
16 mils
4 to 6 mils
4 to 6 mils

1.5 to 2.0 mils

2.5 to 3.0 mils

1.5 to 2.0 mils
SSPC-SP16, Brush-Off Blast Cleaning.

SSPC-SP16, Brush-Off Blast Cleaning.

Metal
Below grade in contact with soil.

Prepare surfaces as specified in this Section and as follows.

SSPC-SP10, Near White Metal Blast Cleaning.

Appendix B
Coating Detail Sheet
EPX-M-6-BG
Epoxy
09960-6

Coating System
Coating Material
Substrate
Products: One of the following or equal: Primer Intermediate Coat Finish Coat Carboline Carboguard 890 Carboguard 890 Carboguard 890
International Paint Bar-Rust 236 Bar-Rust 236 Bar-Rust 236 PPG Amerlock 400 Amerlock 400 Amerlock 400
Sherwin Williams Tank Clad HS Tank Clad HS Tank Clad HS Tnemec Series 69 Series 69 Series 69
Service Condition
Surface Preparation
General
Surface profile
Concrete
Existing Coated Concrete
System Thickness (Dry Film)
Total
Primer
Intermediate Coat
Finish Coat
Application
General
Special CTR Training
Fill all bugholes with a filler/surfacer compatible with the coating.

Not Required.
4 to 6 mils
16 mils
4 to 6 mils
4 to 6 mils
ICRI CSP 3.

ICRI CSP 3.

Appendix B
Coating Detail Sheet
EPX-C-7-BG
Polyamidoamine epoxy or epoxy coating type with similar performance Concrete
Below grade in contact with soil.

Prepare surfaces as specified in this Section and as follows. 09960-7

Painting Prestressed Concrete Water Tanks
09986-1 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/09986 (BidSetFinal) SECTION 09986

PAINTING PRESTRESSED CONCRETE WATER TANKS
PART 1 GENERAL

1.01 SUMMARY
A. Section includes: Painting and coatings for prestressed concrete water tanks.

1.02 REFERENCES
A. Military Specifications (MS):

1. MIL-P-23236 - Paint Coating Systems, Fuel and Salt Water Ballast Tanks.

B. Society for Protective Coatings (SSPC):

1. SP-1 - Solvent Cleaning.

C. United States Navy (USN):

1. QPL/QMLs - Qualified Products/Manufacturers Lists.

1.03 SUBMITTALS
A. Product data.

B. Quality control submittals.

1.04 QUALITY ASSURANCE
A. Qualifications of off-site applicator of coal tar epoxy: Will not be allowed unless by applicator with proven, documented, experience acceptable to Engineer in application of coal tar epoxy systems.

1.05 PROJECT CONDITIONS
A. Environmental requirements:

1. Application of coal tar epoxy: Do not apply coal tar epoxy when ambient and/or surface temperature is less than 50 degrees Fahrenheit.

Painting Prestressed Concrete Water Tanks
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2.01 MATERIALS
A. Prestressed Concrete Tank Shotcrete Finish Painting: Non-Cementitious, high build, 100-percent acrylic resin polymer:

1. Tnemec: Envirocrete 156.

2. Sherwin Williams: Loxon XP WP.

B. Prestressed Concrete Tank Roof Coating: Type II asphalt conforming to ASTM D449 and gravel.

2.02 MIXES
A. Mix in accordance with manufactures instructions.

PART 3 EXECUTION

3.01 PREPARATION
A. Surface preparation: For surfaces designated to be painted:

1. General: Prepare surfaces in accordance with manufacturer’s installation instructions.

Surface Preparation Number Surface Preparation Process
SP-1 Painting Concrete And Shotcrete: Remove form release agents from poured or precast surfaces by sandblasting or as recommended by paint manufacturer.

3.02 PRESTRESSED CONCRETE TANK SHOTCRETE FINISH PAINTING A. Preparation: Prepare surfaces in accordance with general application requirements and in strict accordance with coating manufacturer’s instructions.

B. Application:

1. Apply primer if required by coating manufacturer.

2. Apply 2 or more coats as recommended by coating manufacturer to receive a minimum total DFT of 12 mils; color as selected by the Owner.

3. Apply finish paint to a depth of one foot below finish grade.

3.03 PRESTRESSED CONCRETE ROOF COATING
A. Preparation:

1. Prepare surfaces in accordance with general application requirements and in strict accordance with coating manufacturer’s instructions.

Painting Prestressed Concrete Water Tanks
09986-3 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/09986 (BidSetFinal) B. Application:

1. Apply suitable concrete primer.

2. Cover with Type II asphalt, conforming to ASTM D449, at a minimum rate of 60 lbs per 100 sqft.

3. While the asphalt is still hot embed an approved gravel or small rock at the rate of approximately 10 psf.

3.04 FIELD QUALITY CONTROL
A. Inspection:

1. Coal tar epoxy paints: Check film thickness after application and before coating has cured to be sure that sufficient coating thickness has been applied before coal tar epoxy coating is allowed to set overnight.

3.05 ADJUSTING
A. Remedial work for coal tar epoxy coatings:

1. Non-conformance with application or thickness requirements:
a. If surface coatings are not applied in accordance with following:
1) Time limits listed in Table A in this Section or,
2) Coatings have cured or set and,
3) Coatings have not been applied to specified thickness, then areas that are below specified thickness requirements are to be sandblasted.
b. Sandblasting:
1) Sandblast as required to remove surface film from coatings. 2) Sandblasted areas:
a) Wash and clean with solvent as recommended by manufacturer, and then recoat within time limits specified for coating over fresh coating.
b) Washing or cleaning surface of paint with solvents or other solutions will not be satisfactory substitute for specified sandblasting where painted surface is older than time limits listed in Table A in this Section.

2. In event that recoating of overage coated surface occurs without sandblasting and solvent treatment specified in this article: Entire painting system, down to substrate, is to be removed by sandblasting or other means, and complete new painting system applied.

END OF SECTION

Signage
10400-1 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10400 (BidSetFinal) SECTION 10400

SIGNAGE
PART 1 GENERAL

1.01 SUMMARY
A. Section includes: Plastic and metal signs for building and site use.

1.02 REFERENCES
A. National Fire Protection Association (NFPA):

1. 704 - Standard System for the Identification of the Hazards of Materials for Emergency Response.

B. Occupational Safety and Health Administration (OSHA).

1.03 SUBMITTALS
A. Product data.

B. Shop drawings: Include lists of sign types, sizes, text, and colors; mounting details; locations; and cast metal plaque rubbings and templates.

C. Samples: Include actual materials.

D. Manufacturer's installation instructions.

1.04 QUALITY ASSURANCE
A. Manufacturer qualifications: Manufacturer of proposed products for minimum 5 years with satisfactory performance record of minimum 5 years.

B. Installer qualifications: Manufacturer approved installer of products similar to specified products on minimum 10 projects of similar scope as Project with satisfactory performance record.

C. Regulatory requirements: Provide signage in accordance with Americans with Disabilities Act as published in the Federal Register, Volume 56, No. 144, Friday, July 26, 1991.

Signage
10400-2 8660F10 April 2023
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2.01 PLASTIC SIGNAGE SYSTEM
A. Manufacturers:

1. One of the following or equal:
a. Best Manufacturing Sign Systems, System 900013.
b. Andco Industries Corp., equivalent product.
c. Vomar Products, Inc., equivalent product.

B. Attachment:

1. Vinyl tape, self-adhering.

C. Lettering:

1. Helvetica medium, 3/4 inches high.

D. Material for interior use:

1. Plastic 1/8-inch-thick raised letters.

E. Material for exterior use:

1. Fiberglass 1/4-inch thick with high gloss finish, raised letters, blasted from single piece of fiberglass for integral letter and background.

2. No adhesive as mechanical fastening of letters shall be allowed.

F. Colors:

1. As selected by Engineer from manufacturer's standard colors.

G. See Attachment A - Plastic Signage System Schedule for specific sign size, location, text, pictogram, and quantity.

2.02 METAL SAFETY SIGNS
A. Manufacturer: Meeting OSHA Requirements; 40-mil thick aluminum with baked enamel finish. One of the following or equal:

1. Seton Name Plate Co., Special Wording.

2. Emedco.

B. Danger sign colors:

1. Background: White.

2. Heading: White lettering on red oval with white border in black rectangular panel.

3. Message: Black lettering on white.

4. Size: As scheduled.

C. Caution sign colors:

1. Background: Yellow.

2. Heading: Yellow lettering on black rectangular panel.

3. Message: Black lettering on yellow.

4. Size: As scheduled.

Signage
10400-3 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10400 (BidSetFinal) D. Safety instruction signs:

1. Background: White.

2. Heading: White lettering on green rectangular panel.

3. Message: Black lettering.

4. Size: As scheduled.

E. Warning sign colors:

1. Background: Orange.

2. Heading: Black lettering on orange diamond in black rectangular panel.

3. Message: Flack lettering on orange.

4. Size: As scheduled.

F. Notice information signs:

1. Background: White.

2. Heading: White lettering on blue rectangular panel.

3. Message: Black lettering.

4. Size: As scheduled.

G. Fasteners: Round head stainless steel bolts or screws.

H. See Attachment B - Metal Safety Sign Schedule for specific sign size, location, text, and quantity.

2.03 EXTERIOR INFORMATION SIGNS
A. Able to withstand 100 miles per hour wind load without damage:

1. Manufacturers: One of the following or equal:
a. Best Manufacturing Sign Systems; equivalent product. b. Andco Industries Corp., equivalent product.
c. Vomar Products, Inc., equivalent product.

B. Sign panel: Nominal 3 inches thick, consisting of 1/8-inch-thick fiberglass material with integral returns fully encapsulating wood and foam core, 1/8-inch radius edges and corners, size as indicated on the Drawings.

C. Text: Helvetica medium, size and wording as indicated on the Drawings.

D. Posts: Nominal 3-inch square extruded aluminum sections with aluminum fillers at top and bottom, mounting hardware, and aluminum baseplates drilled for anchor bolts.

E. Fasteners: Manufacturer's standard, suitable for application.

F. Colors: As selected from manufacturer's standard colors.

2.04 CAST METAL PLAQUE
A. Manufacturers: One of the following or equal:

1. Andco Industries Corp.

2. Southwell Co.

3. ARK-RAMOS Inc.

Signage
10400-4 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10400 (BidSetFinal) B. Material: Cast bronze.

C. Size: Approximately 28 by 34 inches by minimum 3/16 inches thick; lettering, center panel, and trim raised 1/8 inch.

D. Lettering: Text as directed by Engineer. Verify before fabrication.

E. Finishes:

1. Lettering, center panel, and trim: Fine satin.

2. Background: Finely pebbled, oxidized to dull black color.

F. Mounting: Concealed with fasteners.

2.05 HAZARD MATERIAL SIGNALS
A. Manufacturer: One of the following or equal:

1. Seton Name Plate Co.

2. Emedco.

B. Hazard material signals: In accordance with NFPA 704; 40-mil thick aluminum with baked enamel finish panels, letters, and symbols with pressure sensitive adhesive, sizes as required for viewing distances, letters and symbols in accordance with Attachment C - Hazard Material Signals.

2.06 CAST ALUMINUM LETTERS
A. Manufacturers:

1. One of the following or equal:
a. Metal Arts.
b. Southwell Co.
c. OMC Industries.

B. Material:

1. Cast aluminum.

C. Text size and font:

1. As indicated on the Drawings.

D. Finish:

1. Black duranodic coating.

E. Mounting:

1. Projected jamb nut mounting, concealed.

2.07 DECAL SIGNS ON GLASS
A. Provide decal signs of the international symbol for accessibility, in accordance with requirements of CBC 1127B.3 for entry signs. Signs to comply with CBC 1117B.5 through 1117B.5.9. Locate signs as follows:

1. Door or sidelight of Door No.

Signage
10400-5 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10400 (BidSetFinal) PART 3 EXECUTION

3.01 PREPARATION
A. Protect adjacent surfaces which may be damaged by installation of signs.

B. Prepare substrates in accordance with sign manufacturer's instructions.

C. Remove scale, dirt, grease, and other contaminates from substrates.

3.02 INSTALLATION
A. Install signs in accordance with sign manufacturer's instructions.

B. Fasten signs securely in level, plumb, and true to plane positions.

C. Install signs where indicated on the Drawings.

END OF SECTION

Signage
10400-Attachment A 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10400 (BidSetFinal)

ATTACHMENT A - PLASTIC SIGNAGE SYSTEM SCHEDULE

Signage
10400-Attachment A-1 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10400 (BidSetFinal)

PLASTIC SIGNAGE SYSTEM SCHEDULE
A. Room Names:

1. Location: On wall outside room adjacent to latch side of doors or when not enough space on latch side, on nearest adjacent wall.

2. Height: 60 inches above floor to center or sign.

3. Size: 6 inches square.

4. Colors: As selected by Engineer.

5. Text: Sign per door describing room function as indicated on the Drawings.

B. Fire Extinguishers:

1. Location: Adjacent to fire extinguishers.

2. Height: 60 inches above floor to center of sign.

3. Size: 6 inches square.

4. Colors: White letters on OSHA Red background.

5. Text: FIRE EXTINGUISHER.

C. Nonpotable Water:

1. Location: At impure water and nonpotable water hose valves in accordance with Typical Detail M276.

2. Height: In accordance with Typical Detail.

3. Size: 10 inches wide by 7 inches high.

4. Heading: CAUTION

5. Text: IMPURE WATER

DO NOT DRINK

Signage
10400-Attachment B 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10400 (BidSetFinal)

ATTACHMENT B - METAL SAFETY SIGN SCHEDULE

Signage
10400-Attachment B-1 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10400 (BidSetFinal)

METAL SAFETY SIGN SCHEDULE
A. CHLORINATION AND SULFONATION EQUIPMENT:

1. Location: Adjacent to exterior doors and gate of Chlorination-Dechlorination building.

2. Size: 14 inches wide by 10 inches high.

3. Heading: CAUTION

4. Wording: CHLORINATION AND SULFONATION EQUIPMENT

DANGEROUS GAS
B. NONPOTABLE WATER:

1. Location: At impure water and nonpotable water hose valves in accordance with Typical Detail M276.

2. Height: In accordance with Typical Detail.

3. Size: 10 inches wide by 7 inches high.

4. Heading: DANGER

5. Wording: DO NOT DRINK THIS WATER
C. REMOTELY CONTROLLED AUTOMATIC EQUIPMENT:

1. Location: On front and back of equipment that starts automatically by remote control.

2. Heading: DANGER

3. Wording: THIS EQUIPMENT STARTS AUTOMATICALLY

BY REMOTE CONTROL
D. HIGH VOLTAGE WARNING:

1. Location: On front and back of equipment, adjacent to doors to rooms containing devices, and devices that operate at 600 volts or greater.

2. Heading: DANGER

3. Wording: HIGH VOLTAGE

KEEP OUT
E. NO SMOKING INFORMATIONAL SIGNS:

1. Location: On exterior face of wall, adjacent to each entry point (exterior door) to all buildings.

2. Height: 60 inches above floor to center of sign. Where metal safety signs are also located adjacent to entry points, place no smoking signs below these signs.

3. Size: 6 inches square.

4. Heading: None.

5. Wording: None.

6. Pictogram: International “No Smoking” symbol.

F. NO SMOKING WITHIN 25 FEET OF BUILDING ENTRY:

1. Location: As indicated on the Drawings.

2. Height: Pole mounted with top of sign at 5 feet above grade.

3. Size: 14 inches wide by 10 inches high.

4. Heading: NOTICE

5. Wording: NO SMOKING WITHIN 25 FEET OF BUILDING.

6. Pictogram: International “No Smoking” symbol.

Signage
10400-Attachment B-2 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10400 (BidSetFinal) G. ACCESSIBLE PARKING SIGN (POST MOUNTED AND REFLECTORIZED):

1. Location: Centered on the parking space reserved for persons with disabilities in accordance with UBC 1129B5.

2. Height: 60 inches from the bottom of sign to parking space finished grade, in accordance with UBC 1129B5.

3. Size: Not smaller than 70 square inches.

4. Wording: As required to suit local regulations.

5. Pictogram: Symbol of accessibility in white on dark blue.

Signage
10400-Attachment C 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10400 (BidSetFinal)

ATTACHMENT C - HAZARD MATERIAL SIGNALS

Signage
10400-Attachment C-1 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10400 (BidSetFinal)

HAZARD MATERIAL SIGNALS
A. HAZARD SIGNAL FOR FERRIC CHLORIDE 35 - 45 PERCENT:

1. Location: At entrances to locations where stored and on storage tanks.

2. Health: 3

3. Flammability: 0

4. Reactivity: 0

5. Special: -

Fire Protection Specialties
10520-1 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10520 (BidSetFinal) SECTION 10520

FIRE PROTECTION SPECIALTIES
PART 1 GENERAL

1.01 SUMMARY
A. Section includes: Fire extinguishers and cabinets.

1.02 REFERENCES
A. ASTM International (ASTM):

1. E814-11a - Standard Test Method for Fire Tests of Penetration Firestop Systems.

B. National Fire Protection Association (NFPA):

1. 10 - Standard for Portable Fire Extinguishers.

C. Underwriters Laboratories, Inc. (UL):

1. 711 - Rating and Fire Testing of Fire Extinguishers.

1.03 SUBMITTALS
A. Product data.

1. Cabinets: Materials description for fire extinguisher cabinets include roughing-in dimensions, details showing mounting methods, relationships to surrounding construction, door hardware cabinet type and materials, trim style and door construction, door style and materials.

2. Extinguishers: Materials description for fire extinguishers; include ratings and classifications.

3. Installation instructions for each product specified.

B. Shop drawings:

1. Small-scale plans showing locations of fire extinguisher cabinets and individual fire extinguishers.

2. Schedule showing each type of cabinet and extinguisher to ensure proper fit and function.

3. Indicate installation procedures and accessories required for a complete installation.

1.04 QUALITY ASSURANCE
A. Manufacturer qualifications: Minimum 5 years with satisfactory performance record.

1.05 WARRANTY
A. As specified in Section 01783 - Warranties and Bonds.

Fire Protection Specialties
10520-2 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10520 (BidSetFinal) PART 2 PRODUCTS

2.01 MANUFACTURERS
A. The following or equal:

1. Activar Construction Products Group – JL Industries.

2.02 FIRE EXTINGUISHERS
A. Multi-purpose chemical type:

1. Extinguisher unit containing a fluidized and siliconized mono ammonium phosphate powder; nonconductive and nontoxic.

2. Construction: Heavy duty steel cylinder with metal valve and siphon tube, o-ring seal, replaceable valve stem seal, visual pressure gage, pull pin and upright squeeze grip.

3. Finish: Factory powder-coated: Red.

4. UL Effectiveness Rating in accordance with UL 711: Class A, B, and C fires.

5. UL Rating in accordance with UL 711: 4A-80BC.

6. Drawing will use the symbol FE for “Fire Extinguisher”.

B. Regular dry chemical type:

1. Extinguisher unit containing Halotron™.

2. Size minimum: 11 pounds.

3. Construction: Heavy duty steel cylinder with metal valve and siphon tube, o-ring seal, replaceable valve stem seal, visual pressure gage, pull pin, and upright squeeze grip.

4. Finish: Factory powder-coated; Red.

5. UL Effectiveness Rating in accordance with UL 711: Class B and C fires.

6. UL Rating in accordance with UL 711: 2A-10BC.

7. Drawing will use the symbol EFE for “Electrical Fire Extinguisher”.

2.03 WALL BRACKETS
A. Type: Standard as manufactured by fire extinguisher manufacturer.

2.04 EXTRA MATERIALS
A. Furnish a minimum 10 percent, but not less than 1, of fire extinguishers with brackets installed in addition to the number indicated on the Drawings.

PART 3 EXECUTION

3.01 INSTALLATION
A. Install in accordance NFPA 10, Standard for Portable Fire Extinguishers.

Fire Protection Specialties
10520-3 8660F10 April 2023
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3.02 LOCATIONS
A. Install fire extinguisher type, FE and EFE, as indicated on the Drawings.

B. Install fire extinguisher mounting in cabinets or wall brackets as indicated on the Drawings.

END OF SECTION

Shade Fabric
10732-1 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10732 (BidSetFinal) SECTION 10732

SHADE FABRIC
PART 1 GENERAL

1.01 SUMMARY
A. Work included: Fabricate, and install shade fabric on the structure as detailed including:

1. Fabricated shade panels.

2. Stainless steel cables.

3. Clamping.

4. Fasteners.

1.02 REFERENCES
A. ASTM International (ASTM):

1. A307 - Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength.

2. F593 - Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and Stops.

3. F3125 - Standard Specification for High Strength Structural Bolts, Steel and Alloy Steel, Heat Treated, 120 ksi and 150 ksi Minimum Tensile Strength.

1.03 QUALITY ASSURANCE
A. Fabrication and erection is limited to firms with proven experience in design and construction of fabric shade structures and such firms shall meet the following minimum requirements:

1. A single Contractor shall manufacture and erect the fabric shade.

2. The Contractor shall demonstrate to have a minimum of 10 years of experience in the engineering, fabrication, and erection of permanent fabric structures.

3. Contractor shall demonstrate that it has a staff of experienced fabric structure installation personnel who will undertake the installation of each project.

1.04 WARRANTY
A. After final payment, the Contractor shall furnish the Owner with a written 10-year warranty, which warrants that the fabric panels (cloth, stitching, and fading), its perimeter attachment system, and the structural support systems supplied and installed by the subcontractor has been installed in accordance with the project and manufacturer's specifications and will be free from defects in materials and workmanship which will impair its normal use or service.

1. The warranty shall extend from the date of substantial completion of the fabric panel shade structure, specifically the first date on which the entire fabric panel system is subject to design pre-stress conditions.

Shade Fabric
10732-2 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10732 (BidSetFinal)

1.05 SUBMITTALS
A. Contractor shall submit drawings and calculations showing the design meets all code provisions.

B. Calculations shall include the fabric attachment and tensioning.

PART 2 PRODUCTS

2.01 MANUFACTURERS/FABRICATORS
A. The following or equal:

1. Sun Ports International, Inc.

2.02 DESIGN AND PERFORMANCE CRITERIA
A. Comply with the requirements of the building code specified in Section 01410 - Regulatory Requirements.

B. Design and fabricate shade fabric and support system for resistance to the following loads as specified in Section 01850 - Design Criteria:

1. Seismic loading

2. Wind loading, based on the requirements for "components and cladding." C. Shade fabric shall be flame-resistant.

D. Life safety:

1. Fabric shade structures shall be designed so no life safety issue is created in the event of a loss of a part of the fabric.

2. The fabric structure shall not rely on the fabric for structural stability.

2.03 MATERIALS
A. Erection hardware:

1. Bolt and fastening hardware shall be determined based on calculated engineering loads.

2. Specifications, based on the following load requirements are:
a. Low strength: ASTM F593 stainless steel bolts, nuts, and washers. b. Medium strength: ASTM A307 zinc-plated steel bolts, nuts, and washers. c. High strength: ASTM F3125, Grade A325 zinc-plated steel bolts, nuts, and washers.

B. Cable:

1. Steel cable is a determined based on calculated engineering load. a. For light and medium loads: 1/4-inch (nominal) galvanized 7 by 19 cable is used.
b. For heavy loads: 3/8-inch (nominal) galvanized 7 by 19 cable is used.

Shade Fabric
10732-3 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10732 (BidSetFinal) C. Thread:

1. GoreTM TENARA® sewing thread is made up of 100 percent expanded polytetrafluorethylene fiber, known as Teflon™.
a. The sewing thread carries a 10-year warranty against deterioration from exposure to the elements.

2. Shall be high strength and low shrinkage.

3. Shall have a wide temperature and humidity range.

4. Flew and abrasion resistant and ultraviolet radiation immunity.

5. Shall be unaffected by cleaning agents, acid rain, mildew, rot, chlorine, saltwater, and pollution.

6. Lockstitch thread: 1200 Denier or approved equal.

7. Chainstitch thread: 2400 Denier or approved equal.

D. Edge details:

1. Perimeter shall contain cables and be double lock stitched. a. The cable shall be contained in a non-tear cloth edge firmly sewed to the fabric.

2. Brass grommets spaced at one foot centers shall be installed inside the cable and in the non-tear edge.

E. Fabric:

1. Raw material:
a. Shadesure® High Density Polyethylene (or equal).
b. Special chemicals for ultraviolet stability.

2. Construction:
a. Monofilament tape construction.

3. Fabric panel material:
a. Cloth shall be made of Shadesure® high density polyethylene cloth with ultraviolet stabilizer treatment (or equal).
b. Color shall be as selected by Engineer.
1) Red is not acceptable.
c. The material shall be manufactured with tensioned fabric structures in mind.

Shade Fabric
10732-4 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/10732 (BidSetFinal) d. The fabric knit is to be made using monofilament and tape filler which has weight of 0.6 ounce per square foot.
1) Material to be Rachel knitted so material will not unravel if cut. e. Burst strength of 35 pounds per square inch.

Finish Stentored
Shade Protection 80 percent
UV Protection 90 percent
Tear Tests (lbs) Warp 200
Weft 450 pounds
Fabric Weight (oz/m2) 6.9
Life Expectancy 12 years in sun
Fading Minimum fading after 10 years
Temperature -22 degrees Fahrenheit
Maximum Temperature + 176 degrees Fahrenheit
F. Rope:

1. Polypropylene rope: Polypropylene rope for lacing the shade to the frame shall be ultraviolet resistant and have sufficient capacity to carry the weight of the shade, tension force and any wind and live loads applied to the fabric panel.

PART 3 EXECUTION

3.01 INSTALLATION AND SAFETY PROCEDURES
A. The Contract Work to be performed shall consist of furnishing all labor, materials, equipment, parts, and supplies necessary for installation.

B. Shade shall be attached to steel pipe frame using polypropylene rope.

1. Shade shall be taut and be sloped to drain as indicated on the Drawings.

END OF SECTION

Liquid Chemical Diaphragm-Type Metering Pumps General
11242-1 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11242 (BidSetFinala) SECTION 11242

LIQUID CHEMICAL DIAPHRAGM-TYPE METERING PUMPS
PART 1 GENERAL

1.01 SUMMARY
A. Section includes: Positive displacement, diaphragm metering pumps; accessories, drives, and control panel requirements for pumping chemical solutions.

B. Tag numbers:

1. As specified in Pump Schedule.

1.02 REFERENCES
A. Instrumentation Controls Specialty Contractor (ICSC).

B. International Society of Automation (ISA):

1. ISA5.4 - Instrument Loop Diagrams.

C. National Electrical Code (NEC).

D. National Electrical Manufacturer's Association (NEMA):

1. 250 - Enclosures for Electrical Equipment (1000 V Maximum).

E. NSF International (NSF):

1. 61 - Drinking Water System Components - Health Effects.

F. Underwriters Laboratories, Inc. (UL):

1. 508 - Standard for Industrial Control Equipment.

2. 508A - Standard for Industrial Control Panels.

3. 698A – Standard for Industrial Control Panels Relating to Hazardous (Classified) Locations.

4. 1283 - Standard for Electromagnetic Interference Filters.

5. 1449 - Surge Protective Devices.

1.03 SUBMITTALS
A. Submit as specified in Section 01330 - Submittal Procedures.

B. Product data: As specified in Section 15050 - Common Work Results for Mechanical Equipment.

1. Design data, test reports, certificates, manufacturer’s instructions, manufacturer’s field reports:
a. Chemical feed pumps:
1) For each pump type, submit calibration charts and tables relating flow rate to stroke length and stroke rate.

Liquid Chemical Diaphragm-Type Metering Pumps General
11242-2 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11242 (BidSetFinala) 2) Submit hydraulic modeling results for each pumping system. a) Confirm scheduled values or recommend new pressure
setpoints for the backpressure valves and pressure relief valves listed in the Pump Schedule.
3) Submit calculations for each metering pump showing the suitability of each pump for the suction and discharge conditions of each application point.
a) Pump manufacturer shall recommend and size an accumulator to be piped to the suction side of each metering pump, when required based on calculations.
4) Submit calculations recommending dimensions of pulsation dampener indicated on the Drawings.

C. Shop drawings: As specified in Section 15050 - Common Work Results for Mechanical Equipment.

1. Provide a list of parameters, ratings, or other characteristics where the proposed chemical feed systems deviate from the requirements.

2. Dimensions, including anchor bolt layout, materials of construction, size, weight, and performance data.

3. Drawings: Provide electrical and instrumentation drawings showing coordination with electrical control devices operating in conjunction with the associated feed system.

4. Dimensioned inlet and outlet connections.

5. Current NSF 61 Certification for components to be in contact with associated chemical or potable water.

6. Provide data showing chemical compatibility and history of service with the associated chemical for materials in the system.

7. Control panel views showing equipment arrangement, doors, equipment layout inside the panel and dimensional information.

8. Internal interconnecting wiring diagrams showing terminal strips and external devices connected to the panel as specified in Section 17050 - Common Work Results for Process Control and Instrumentation Systems.

9. Loop drawings for analog and discrete signals in accordance with ISA5.4.

10. Complete schematic and diagrams including terminal block and wire identification numbers and device location symbols consistent with the Contract Documents.

11. Panel bill of material with detailed description of components and equipment data sheets.

12. Field cable numbers and terminations.

13. Manufacturer’s Representative’s qualifications as specified in Section 01756 - Commissioning.

14. Manufacturer’s certificate stating that the materials of construction are compatible with the pumped fluid.

15. Manufacturer’s Certificate of Source Testing as specified in Section 01756 - Commissioning.

16. Manufacturer’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

17. Calibration curves for each pump relating stroke length to flow rate shall be supplied.

Liquid Chemical Diaphragm-Type Metering Pumps General
11242-3 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11242 (BidSetFinala)

18. Capacity control shall be 0 to 100 percent with delivery repeatable within plus or minus 1 percent accuracy over at least a 10 to 1 range.

19. Motor and VFD supplier shall carefully review the intended application of the VFD and certify in writing that sizes provided are adequate for continuous or intermittent operations (whichever is the most severe operating condition.

D. Calculations: As specified in Section 15050 - Common Work Results for Mechanical Equipment.

E. Vendor operation and maintenance manuals: As specified in Section 01782 - Operation and Maintenance Manuals.

1. Provide information on each piece of equipment, including instrumentation.

2. Provide all safety considerations relating to operations and handling of the associated chemical.

3. Maintenance data shall include all information and instructions required by plant personnel to keep equipment properly cleaned, lubricated, and adjusted so that it functions economically throughout its full design life.

4. Lubrication charts and tables of alternate lubricants.

5. Name, address, and phone number of manufacturer and manufacturer’s local service representative.

F. Commissioning submittals:

1. Provide Manufacturer’s Certificate of Source Testing as specified in Section 01756 - Commissioning.

2. Provide Manufacturer’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

1.04 WARRANTY
A. Provide warranty as specified in Section 01783 - Warranties and Bonds.

B. Special warranty:

1. Provide an additional 2 years manufacturer’s warranty, issued in the name of the Owner, for all equipment provided under this Section.

1.05 DELIVERY, STORAGE AND HANDLING
A. Packing, shipping, handling, and unloading:

1. Pack for shipping and outdoor storage at the project site for up to 6 months. a. Apply temporary corrosion protective coatings to unpainted components and pack components to protect from the elements.

2. Ship pump and drive completely assembled.
a. VFD shall be shipped unwired to the motor for field wiring.

PART 2 PRODUCTS

2.01 GENERAL
A. A single pump manufacturer shall furnish and coordinate all drives and pump components specified in this Section, including motors, gears, couplings, supports,

Liquid Chemical Diaphragm-Type Metering Pumps General
11242-4 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11242 (BidSetFinala) and other specified accessories and appurtenances to ensure compatibility and integrity of the individual components.

B. The manufacturer of the pumps shall have sole-source responsibility for furnishing the complete assemblies and meeting the specified performance requirements.

2.02 DESIGN AND PERFORMANCE CRITERIA
A. General: Provide mechanically actuated, positive displacement, diaphragm type chemical metering pumps, accessories, and other items required for a complete and operational system. Each chemical metering pump system shall include, but not be limited to, the following items, which shall be supplied by the chemical metering pump manufacturer.

1. Pumps.

2. Motors.

3. Variable frequency drive (VFD) (as applicable).

4. DC Drive (as applicable)

5. Control panels.

6. Calibration columns.

7. Pulsation dampeners.

8. External pressure relief valves.

9. Diaphragm back pressure valves.

B. Fluid characteristics:

1. Ferric chloride:
a. Dry chemical formula: 2FeCl3.
b. Solution concentration: 40 percent by weight.
c. Solution pH: < 2.
d. Solution specific gravity: 1.4.

C. Design requirements:

1. Pump:
a. Dry self-priming, capable of being run dry without damaging effects to pump.

2. Motor characteristics:
a. As specified in this Section and in Section 16222 - Low Voltage Motors up to 500 Horsepower.
b. Minimum acceptable motor size is 1/2 horsepower.

3. VFD characteristics: As specified in this Section.

4. Shafting and couplings: Design shafting and couplings to withstand a minimum of 1.5 times the maximum operating torque or other imposed loads.

5. Supports:
a. Provide pump and driver supported on a common base.
b. Design anchor bolts to withstand a minimum of 1.5 times the maximum imposed operating loads or 1.0 times the imposed seismic loads, whichever is greater.

Liquid Chemical Diaphragm-Type Metering Pumps General
11242-5 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11242 (BidSetFinala) D. Performance requirements:

1. Systems shall deliver the pressures and volumes listed for their respective services in the Pump Schedule.

E. Product requirements as specified in Section 01600 - Product Requirements and Section 15050 - Common Work Results for Mechanical Equipment.

2.03 PUMPS
A. Existing products:

1. Existing facility has ProMinent brand pumps.

2. New pumps must match style, material, finish, operation, and dimensions.

B. Equipment:

1. Pump:
a. Manufacturer, no equal:
1) Prominent Fluid Controls, Inc.

2. Type: Simplex chemical proportioning pumps of the positive displacement diaphragm type.

3. Materials:
a. The metering pumps and their components and accessories shall be suitable for the following chemical concentrations, as scheduled in this Section:
1) Ferric chloride:
a) Wetted parts shall be suitable for use with 23 to 43 percent ferric chloride solution.
b) Other non-specified materials are to be manufacturer’s standard for continuous service with 23 to 43 percent ferric chloride solution.
b. Diaphragm materials:
1) Flat, composite, mechanically actuated diaphragms shall be Viton™, EPDM or PTFE faced as pump manufacturer deems suitable for the pumped liquid, fiber reinforced and bonded to an elastomeric support with a Type 316 stainless steel backing plate.
2) Flat, composite, hydraulically actuated diaphragms shall be Viton™, EPDM or PTFE faced as pump manufacturer deems suitable for the pumped liquid.
3) Tubular, hydraulically actuated diaphragms shall be Viton™, EPDM or PTFE lined, as pump manufacturer deems suitable for the pumped liquid.
c. Other parts in contact with pumped liquid: PTFE, PVC, or other suitable thermoplastic.

4. Characteristics:
a. Diaphragm simplex chemical proportioning pumps of the positive displacement diaphragm type.
b. The diaphragm shall be mechanically actuated.
c. Liquid end:
1) Liquid end shall be sealed by means of an O-ring of material compatible with the pumped liquid.

Liquid Chemical Diaphragm-Type Metering Pumps General
11242-6 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11242 (BidSetFinala) 2) Pumps for sodium hypochlorite service shall be equipped with an off-gassing valve.
3) Liquid end of each metering pump shall be fitted with a system to detect early stage diaphragm failure. Upon actuation, the leak detector shall stop the pump, light a locally visible LED and sound a remote alarm.

5. Components:
a. Manually controlled external stroke controllers.
b. Suction and discharge single check valves.
c. Built-in internal or external, adjustable pressure relief valve to relieve pressure in the event of discharge line stoppage; which shall be factory set to relieve at 100 pounds per square inch gauge.
d. Hydraulic make-up and air bleed valves.

6. Accessories: As indicated on the Drawings, pumps shall be equipped with:
a. Calibration column in suction piping.
b. Diaphragm backpressure, pulsation dampener, and pressure relief valve in discharge piping.

7. Tests and inspections:
a. As scheduled in this Section.

8. Verification of performance.

2.04 MOTOR
A. Type:

1. Each chemical metering pump shall be motor-driven through a flexible coupling, or direct-connected to the pump when manufacturer’s standard.

2. Pumps and motors shall be mounted on floor-mountable base plates. a. Coupler:
1) Manufacturers: One of the following or equal:
a) Dodge, Para-flex.
b) Falk, Type WA.
c) Baldor.

B. Characteristics:

1. Electric motors shall be as specified in Section 16222 - Low Voltage Motors up to 500 Horsepower.

Liquid Chemical Diaphragm-Type Metering Pumps General
11242-7 8660F10 April 2023
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2. Motors and motor starters shall be furnished by the pump manufacturer and shall be coordinated with the requirements of the pumps and the following characteristics:

Tag Number PMP-85183
Driver Type DC Drive
Drive Coupling Close-coupled, Verfical
Horsepower (Minimum) 1/2
Supply Voltage/Phase/Hertz 120/1/60
Speed (Maximum) 1,750 rpm
Service Factor 1.0
Ambient Temperature 40 degrees Centigrade
Maximum Temperature Rise 40 degrees Centigrade
Enclosure TENV
Insulation Class F
Bearings 6203
Fasteners

3. PMP-85183 (Coagulant Pump): The motor shall be a permanent magnet type, having a 90-volt direct current armature rating, and horsepower not less than the minimum specified rating. If the pump and motor are replaced to match the existing system, use Baldor Motor CDP3330 with Spec No. 33-2092Z122. This is a special-order motor with longer motor leads and should also be suitable for mounting an encoder on the NDE of the motor. Use Dart Controls DC Drive MD50P with encoder for monitoring speed feedback.

4. Motor shall have a thermostat for high temperature shutdown.

5. The motor brushes shall have tinned leads.

2.05 VENDOR CONTROL PANEL
A. General:

1. Replace existing DC drive only, all other existing components to remain in place.

B. DC drive with integrated controller:

1. Manufacturer: The following, no equal:
a. Dart Controls, MD50P with OPT420 module.

2. Display: 1/2 inch LED.

3. Ambient temperature: -10 – 45 degrees Celsius.

4. Line input frequency: 60 Hz.

5. Overload capacity: 200 percent for 1 minute.

Liquid Chemical Diaphragm-Type Metering Pumps General
11242-8 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11242 (BidSetFinala) C. Monitoring and control:

1. Dry contact rating: 120 VAC at 10 A.

2. Analog signal type: 4-20 mA.

3. Provide optional modules as needed for inputs and outputs listed below.

4. VCP Inputs:
a. Control:
1) Accept a pump speed set point (4-20 mA input).

5. VCP Outputs:
a. Status:
1) Running (dry contact).
2) ESTOP pressed (dry contact).

2.06 CONTROL STRATEGY
A. General.

B. Hardwired control functions:

1. Provide components required so that existing dilution water solenoid valve located in non-potable water line on the discharge side of the pump will be commanded to open when the pump is running and commanded to close when the pump is stopped.

2. With the HOA switch in HAND:
a. The pump may be started, stopped, and speed adjusted by the DC drive controller.

3. With the HOA switch in OFF:
a. The pump is stopped.

4. With the HOA switch in AUTO:
a. The pump receives a speed setpoint from the PCS via 4 – 20 mA input. If the speed is set to 0 percent (4mA), the pump shall stop.

2.07 SPARE PARTS
A. Vendor to provide spare parts that are required to provide uninterrupted operation for a minimum of 2 years.

B. Additional spare part requirements as specified in the Contract Documents.

2.08 ACCESSORIES
A. Pulsation dampeners:

1. Manufacturers: One of the following or equal:
a. Kemlon Products.
b. Blacoh Fluid Controls, Inc.
c. Pulsafeeder.

2. Pulsation dampeners shall be furnished and installed on each chemical metering pump’s discharge lines as indicated on the Drawings and scheduled in this Section.

Liquid Chemical Diaphragm-Type Metering Pumps General
11242-9 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11242 (BidSetFinala)

3. Materials:
a. Pulsation dampeners shall have Hypalon diaphragms and CPVC, PVC, stainless steel, or lined cast iron chamber.
1) Materials shall be compatible with the pumped liquid at the specified concentration, and suitable for outdoor use and exposure.

4. Characteristics:
a. Pulsation dampeners shall be gas or air charged, single diaphragm type complete with valved gas/air charge valve connection and pressure gage graduated from 0 to 150 pounds per square inch.
b. Pulsation dampeners shall allow no more than 6 percent discharge pressure fluctuation.

5. Dampeners shall be provided with a true-union ball valve for shutoff.

B. Calibration columns:

1. Materials:
a. Materials shall be compatible with the pumped liquid and concentration specified in this Section, and suitable for outdoor use and exposure.

2. Characteristics:
a. Furnish and install calibration columns, 1 for each chemical metering pump, on each chemical pump’s inlet line as indicated on the Drawings and specified in this Section.
1) Columns shall be translucent.
b. Provide top cap threaded connection with vent piped to floor to prevent entry of foreign materials and to direct spillage or overflow. c. End connections shall be threaded.
d. Capacities and graduations shall be as indicated in the schedule in this Section.

C. Diaphragm backpressure and pressure relief valves:

1. As specified in Section 15118 - Pressure Reducing and Pressure Relief Valves.

2. Manufacturers: One of the following or equal:
a. Wallace and Tiernan.
b. Pulsafeeder.
c. Griffco.
d. Milton Roy Co.

3. Materials:
a. Valves shall be of suitable materials for the pumped liquid.

4. Characteristics:
a. Ported to serve as either a backpressure valve or a pressure relief valve. b. Relief valve shall be plumbed to the nearest chemical drain, or back to the pump suction on the non-pump side of the pump suction isolation valve, to avoid spillage, as indicated on the Drawings.
c. Valves shall be furnished and installed on each chemical metering pump’s discharge lines as indicated on the Drawings and scheduled in this Section.

Liquid Chemical Diaphragm-Type Metering Pumps General
11242-10 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11242 (BidSetFinala) d. Valves shall have an adjustable spring range to match existing. Valves shall be factory adjusted for the backpressure recommended by the pump manufacturer.
e. Valves shall produce a back pressure no greater than 10 pounds per square inch above valve set pressure when metering pumps are operating at full capacity, pulsating flow.

D. Additional accessories:

1. Additional accessories required for the system but not required to be supplied by the pump manufacturer include:
a. Isolation valves as specified in Section 15111 - Ball Valves for suction and discharge piping as indicated on the Drawings.

2.09 NAMEPLATES
A. Each pump, gearbox, and motor shall have, securely affixed in a conspicuous location, a stainless steel nameplate with raised letters providing the manufacturer’s model, serial number, rating, range, speed and other pertinent data.

2.10 SPARE PARTS AND SPECIAL TOOLS
A. Spare parts: Furnish the following spare parts packed and labeled for warehouse storage:

1. Complete set of inlet and outlet ball check valves (balls, seats and gaskets) and a diaphragm for each pump.

2. 1 complete spare parts kit for each pump provided.

3. An initial supply of all oils, greases, and lubricants required to start operations.

Supply an amount of these materials equivalent to 1 year of continuous operation for each system.

B. Special tools: Deliver 1 set for each furnished pump type and size needed to assemble and disassemble pump system.

PART 3 EXECUTION

3.01 COMMISSIONING
A. As specified in Section 01756 - Commissioning and this Section.

B. Manufacturer services:

1. Provide certificates:
a. Manufacturer’s Certificate of Source Testing.
b. Manufacturer’s Certificate of Installation and Functionality Compliance.

2. Manufacturer’s Representative onsite requirements:
a. Installation: 1 trip, 1 day minimum.
b. Functional Testing: 1 trip,1 day minimum each.

3. Training:
a. Maintenance: 4 hours per session, 1 sessions.
b. Operation: 2 hours per session, 21 sessions.

Liquid Chemical Diaphragm-Type Metering Pumps General
11242-11 8660F10 April 2023
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4. Process operational period:
a. As required by Owner or Contractor.

C. Source testing: As specified in Pump Schedule.

D. Functional testing: As specified in Pump Schedule.

3.02 SCHEDULES
A. Pumps:

Tag Number PMP-85183
Feed Point AWT Packaged Filter/Clarifiers No. 1 to No. 4 Service Ferric Chloride
Pump Type Single Diaphragm
Number of Pumps 1
Named Manufacturer Prominent
Pump Characteristics
Design Conditions:

Maximum Flow, (gallons per hour) 20.4
Pump Stroke Range (strokes per hour) 144
Source Testing
Test Witnessing Not Witnessed
Performance Test Level 1
Vibration Test Level None
Noise Test Level None
Functional Testing
Performance Test Level 1
Vibration Test Level 1
Noise Test Level 1

1. Provide pumps that deliver the maximum capacity, listed in the above table, when at full speed and maximum stroke length.

END OF SECTION

Heavy-Duty Fabricated Stainless Steel Slide Gates
11294B-1 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11294B (BidSetFinal) SECTION 11294B

HEAVY-DUTY FABRICATED STAINLESS STEEL SLIDE GATES
PART 1 GENERAL

1.01 SUMMARY
A. Section includes: Heavy-duty fabricated stainless steel slide gates.

1. Gate Schedule is included in the Drawings.

B. As specified in Section 01600 - Product Requirements.

1.02 REFERENCES
A. American Water Works Association (AWWA):

1. C561 - Fabricated Stainless Steel Slide Gates.

B. American Welding Society (AWS):

1. D1.6 - Structural Welding Code-Stainless Steel.

C. ASTM International (ASTM):

1. A276 - Standard Specification for Stainless Steel Bars and Shapes.

2. B584 - Standard Specifications for Copper Alloy Sand Castings for General Application.

3. D1248 - Standard Specification for Polyurethane Plastics Extrusion Materials for Wire and Cable.

4. D2000 - Standard Classification for Rubber Products in Automotive Applications.

5. D4020 - Standard Specification for Ultra-High Molecular-Weight Polyethylene Molding and Extrusion Materials.

1.03 DEFINITIONS
A. Design Head: Depth from surface of water to centerline of gate. Use value specified in the gate schedule.

B. Seating Head: Pressure applied to gate slide from weight of water column above gate centerline that forces gate slide into seat.

C. Slenderness Ratio (l/r): The largest ratio obtained by dividing the unsupported length of the stem by the radius of gyration of the stem cross section.

D. Substantially Similar:

1. Similar in size, design head, and service.

2. Utilizes the proposed design for critical components including guides and seals.

E. Unseating Head: Pressure applied to gate slide from weight of water column above gate centerline that forces gate slide away from seat.

Heavy-Duty Fabricated Stainless Steel Slide Gates
11294B-2 8660F10 April 2023
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1.04 SUBMITTALS
A. Submit as specified in Section 01330- Submittal Procedures.

B. Product data: As specified in Section 15050 - Common Work Results for Mechanical Equipment.

C. Shop drawings: As specified in Section 15050 - Common Work Results for Mechanical Equipment.

D. Calculations: As specified in 15050 - Common Work Results for Mechanical Equipment:

1. Calculations and design data substantiating conformance with the Drawings and specifications.

2. For coordination purposes, gate manufacturer shall supply calculations verifying the suitability of the selected operator for the application. a. For all gates:
1) The maximum torque required for operation of the gate (including breakaway from seat) with a safety factor of 1.4.
2) Indicate thrust value and stem factor.
b. For manually operated gates coordinate with Section 13446 - Manual Actuators.

3. Gate opening and closing thrust forces that will be transmitted to the support structure with operator at extreme positions and load.

4. Breakaway torque from seat. Indicate thrust value and stem factor.

5. Guide frame in accordance with AWWA C561 stress threshold compliance for exterior guide leg and fasteners.

6. Anchorage calculations in accordance with Section 15050 - Common Work Results for Mechanical Equipment.

E. Shop drawings:

1. Layout and installation drawings for each gate size and type.

2. Wall thimbles design.

3. Complete bill of materials.

F. Vendor operation and maintenance manuals: As specified in Section 01782 - Operation and Maintenance Manuals.

G. Commissioning submittals:

1. Provide Manufacturer’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

2. Leakage test results.

H. Manufacturer's installation instructions.

1.05 QUALITY ASSURANCE
A. Manufacturer qualifications:

1. Minimum 10 years of experience in production of fabricated stainless steel slide gates substantially similar to the equipment specified.

Heavy-Duty Fabricated Stainless Steel Slide Gates
11294B-3 8660F10 April 2023
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2. Submit evidence of satisfactory operation in at least 20 different installations in the United States using the proposed guides and seals design.

3. Multiple gates at a plant shall be considered as one installation toward meeting the experience requirements.

B. Manufacturer's shop welds, welding procedures, and welders: Qualified and certified in accordance with the requirements of AWS D1.6.

C. Factory markings:

1. Mark gates according to the scheduled equipment tag numbers when such numbers are used.

2. For thimbles, frames, and other non-interchangeable components, match mark the entire system.

D. Assembled gates: Shop inspected, adjusted, and tested before shipment.

1.06 WARRANTY
A. Provide warranty as specified in Section 01783 - Warranties and Bonds.

PART 2 PRODUCTS

2.01 MANUFACTURERS
A. Manufacturers: One of the following or equal.

1. H. Fontaine, Series 20.

2. Whipps, Inc., Series 900.

3. Waterman Industries, SS-250.

4. Rodney Hunt, Series A-113 or A-114.

5. Hydro Gate, Model HG-561.

6. RW Gate, Model RW1000-S.

B. Operator anchor bolts and wall thimbles: Provided by manufacturer of slide gates.

2.02 DESIGN AND PERFORMANCE CRITERIA
A. Maximum allowable leakage shall be 0.10 gallons per minute per foot of sealing perimeter, the allowable limits set forth in AWWA C561. Leakage testing shall be conducted in accordance with AWWA C561.

B. Except as modified or supplemented as specified in this Section, all gates and operators shall conform to the requirements of AWWA C561, latest edition.

C. Gate components:

1. Frames:
a. Design for the design head scheduled with a minimum safety factor of 5 with regard to ultimate tensile, compressive, and shear strength. b. Self-contained gates: Where frames extend above the operating floor, design to be self-supporting so that no further reinforcing or support is required.

Heavy-Duty Fabricated Stainless Steel Slide Gates
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2. Stem: Select stem diameter, stem guide quantity and stem guide spacing based on following criteria:
a. Slenderness ratio (l/r): Shall not exceed 200.
b. Maximum diameter: Provide stem guides at a spacing to maintain stem diameter of 2 inches or less.
c. Tensile strength: Suitable to withstand the force generated by the operator with the application of a 200-pound force applied to the crank or handwheel or a 250-foot-pound torque applied to the wrench nut. d. Compressive strength:
1) Suitable to withstand buckling due to the force generated by the operator with the application of an 80-pound force applied to the crank or handwheel or a 100-foot-pound torque applied to the wrench nut.
2) Determine buckling load using Euler Column formula in accordance with AWWA C561, where C = 2.
e. Design force for power actuators:
1) Hydraulic cylinder operators: 1.25 times the output thrust at maximum hydraulic fluid operating pressure.
2) Electric motor operators: 1.25 times the output thrust in the stalled-motor condition.
f. Gates having widths greater than 2 times the height: Provide with 2 lifting mechanisms connected by a tandem shaft.

3. Thrust nut: Suitable to withstand thrust developed by operator with the application of a 40-pound force on the crank or handwheel with safety factor of 5. Base design on ultimate strength of material used.

4. Yokes for self-contained gates:
a. Design yoke using design loading criteria for stem with safety factor of 5 based on the ultimate strength of the material used.
b. Maximum deflection at design load: Not to exceed 1/360th of the span.

5. Slide:
a. Deflection shall be less than or equal to 1/1000 of the span of the gate or 1/16 inch, whichever is less, under the design head.
b. Design for the maximum design head specified with a minimum safety factor of 5 with regard to ultimate tensile, compressive, and shear strength.

2.03 MATERIALS
A. Stainless steel: ASTM A276, Type 304:

1. Components or structural shapes which are welded: ASTM A276, Type 304L. a. Manufacturer's shop welds, welding procedures, and welders:
1) Qualified and certified in accordance with the requirements of AWS D1.6.

2. All wetted and unwetted parts including all fasteners and hardware, except as specified in this Section, shall be stainless steel.

B. Ultra-high molecular weight polyethylene: ASTM D1248 and D4020, virgin materials only.

C. Neoprene: ASTM D2000, Grade 2 BC 510.

Heavy-Duty Fabricated Stainless Steel Slide Gates
11294B-5 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11294B (BidSetFinal) D. Manganese bronze: ASTM B584, UNS Number C86500 or Alloy 432.

E. Silicon bronze: ASTM B584 UNS Number C87300.

2.04 COMPONENTS
A. Slide:

1. Type 304L stainless steel.

2. Rectangular or square.

3. Fabricated with a flat plate reinforced with formed plates or structural members.

B. Frame:

1. Construct gate frame of Type 304L stainless steel structural members or formed plate welded to form a rigid 1-piece frame.
a. Capable of providing true dimensions within tolerances and preventing binding and excessive wear of sliding parts.

2. Mounting: As indicated on the Drawings and Slide Gate Schedule. a. Centerline of anchors shall be located no closer than 4-1/2 inches from the edge of concrete opening for face-mounted gates.

3. Adjustable ultra-high molecular weight polyethylene pressure pads.

4. Flush bottom type unless otherwise indicated on the Drawings.

5. Allow replacement of top, side, and bottom seals without removing the gate frame from concrete or wall thimble.

6. Machine surfaces matching with thimble. Provide seal between gate frame and thimble that will meet leakage performance requirements.

7. Embedded gates: Extend frame to provide access to pressure pad adjusting screws (For seal design alternatives A and B only).

C. Yoke for self-contained gates:

1. Type 304L stainless steel.

2. Extend guides and frame so that bottom of yoke is at least 12 inches above top of slide at full open position.

3. Bolt or weld to frame.

4. Provide mounting plate on top of yoke to mount operator.

5. Design yoke to allow removal of gate slide.

D. Guides:

1. Type 304L stainless steel with ultra-high molecular weight polyethylene insert in contact with gate.

2. Minimum face width of 1 inch.

3. Length: To support the slide fully in the open position.

4. Anchor bolts shall not pass through the guides and seals.

E. Seals:

1. Designed to achieve the specified leakage requirements.

2. Sealing and sliding surfaces shall provide a low coefficient of friction with the surface of the slide.

3. Field replaceable without removing gate from concrete or wall thimble.

4. Anchor bolts shall not pass through the guides and seals.

5. J-bulb seals are not acceptable.

Heavy-Duty Fabricated Stainless Steel Slide Gates
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6. Minimum seating surface width: 3/4 inch in contact with slide.

7. Bottom seal:
a. Resilient neoprene, minimum durometer of 45.
b. Attached to the bottom of the slide or embedded in gate frame invert. c. Compressed by closing action of gate slide against plate for all standard upward opening gates.

8. Side and top seals:
a. Provide one of the seal design alternatives listed below. b. Seal design alternative A:
1) UHMWPE fixed sealing surfaces that surround the clear opening. 2) Held in place in the guide with Type 304 stainless steel fasteners. 3) Seal compression shall be maintained by UHMWPE field adjustable pressure pads mounted to the slide with Type 304 stainless steel fasteners.
c. Seal design alternative B:
1) Neoprene crown seal with UHMWPE bearing bars.
2) Attached to the slide with Type 304 stainless steel fasteners. 3) Crown seal shall be actuated by water pressure in either the seating or unseating direction.
4) Primary contact with the slide shall be through the UHMWPE bearing bar. The neoprene shall not be solely relied upon for the contact seal. 5) Seal compression may be maintained by UHMWPE field adjustable pressure pads mounted to the guide with Type 304 stainless steel fasteners.
d. Seal design alternative C:
1) UHMWPE self-adjusting type seals: Utilize a continuous compression cord to ensure contact between the seals and the slide. a) An O-ring is not acceptable in lieu of compression cord. 2) Side seals:
a) Attach to frame using one of the following approaches. (1) Held in place between the front and back angles of the guide with Type 316 stainless steel bolts passing through the guide and seal along the length of the guide.
(2) Held in place between front and back of a formed, 1 piece, rigid channel guide. Attach seals to frame using Type 316 stainless steel bolts.
b) Design and installation shall provide access to and removal of the bolt to allow removal of the side seal without removing the gate from the concrete.
3) Top Seal: UHMWPE self-adjusting type seal with double compression cord.

9. Provide invert seal for all downward (weir) gates.

10. Set seals to be slightly compressed with slide in closed position.

F. Stem:

1. Type 304 stainless steel.

2. Machine cut or rolled full depth ACME threads.

3. Diameter: Capable of withstanding anticipated opening and closing thrusts under head as indicated on the Drawings. Minimum stem diameter: 1-1/2 inch at the threads.

4. Length: Capable of permitting easy installation and removal.

Heavy-Duty Fabricated Stainless Steel Slide Gates
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5. Stem couplings:
a. Silicon bronze or Type 304 stainless steel.
b. Threaded and keyed to stem or threaded and bolted to stem.

6. Stem guides:
a. Type 304 stainless steel.
b. Split collar.
c. Adjustable in 2 directions.
d. Ultra-high molecular weight polyethylene bushing.

7. Provide manganese bronze stop collar on stem above actuator.

8. Drill and connect stem to slide structural sections with Type 304 stainless steel bolts.

9. Coordinate the selection of the gate stem configuration with the gate operator and operating speed.
a. The selected gate stem configuration shall provide the most efficient combination of stem diameter/pitch/lead and keep the operating temperature at the stem nut to a minimum during operation. b. For motorized applications, if the proposed gate stem configuration would result in any deviation from the operating rise rate specified in Section 13447 - Electric Actuators, submit proposed deviation for approval by the Engineer.

G. Operating nut:

1. Locate at operator level.

2. Material: Manganese bronze.

H. Gate operators: As scheduled and specified in Section 13446 - Manual Actuators.

1. Provide cranks and gears necessary to bring operator to height specified, or typical operator height of 3 feet 6 inches if not otherwise shown.

I. Bolts, nuts, and fittings: Type 304 stainless steel.

J. Anchor bolts: Type 316 stainless steel of sufficient quantity and length to anchor the gate.

1. Quantity, size, and location of anchor bolts shall be determined by the gate manufacturer in accordance with requirements of Section 15050 - Common Work Results for Mechanical Equipment.

2.05 WALL THIMBLES
A. Provide wall thimbles for gates where scheduled and as indicated on the Drawings.

B. F-section of a depth equal to the thickness of the structure wall upon which the gate is mounted.

1. Modify F-sections where required for F-section and pipe bell ring connections in a wall.
a. Provide flange-by-mechanical joint or flange by push on joint wall thimble where ductile iron piping connects to the wall thimble. Ensure that joint wall thimble has sufficient embedment to resist pipe thrust. b. Provide flange-by-bell ring wall thimble insert where reinforced concrete piping connects to the wall thimble.

Heavy-Duty Fabricated Stainless Steel Slide Gates
11294B-8 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11294B (BidSetFinal) C. Fabricated Type 304L stainless steel of sufficient section to resist permanent distortion; minimum 3/8-inch-thick plate.

D. Width of mounting flange of wall thimble: 1/2 inch wider than mounting flange of gate.

E. Fully machine front flange of thimble to a plane Drill and tap to match the drilling on the flange back gate seat.

F. Clearly mark top center of each thimble for installation.

G. Provide Type 304 stainless steel studs for attaching the gate frame.

H. Seal joint between thimble and gate watertight, in accordance with AWWA C561.

I. To permit entrapped air to escape as the thimble is being cast in concrete, drill holes in each entrapment zone formed by ribs, flanges, and water stops.

J. Provide annular weep ring to control seepage and resist thrust, where needed to anchor the pipe thrust restraint system.

1. Continuously weld weep ring to outside of the wall thimble.

2. Weep ring shall be minimum 1/4 inch thick and minimum 2 inches deep.

2.06 FINISHES
A. Stainless steel:

1. Surface preparation of gates and stop plates after fabrication to remove weld splatter and to polish scratches:
a. Shot blast.

2. Clean the entire surface to produce an even color and sheen.

B. Operators, stands, and other accessory equipment: Surface preparation, factory prime, field prime, and finish coats as specified in Section 09960 - High-Performance Coatings.

2.07 FABRICATION
A. Shop assembly:

1. Gates shall be factory assembled, adjusted, and tested.

2. Mount all accessories and appurtenances including, but not limited to, motor operators and limit switches so that the complete system may be tested at the factory.

PART 3 EXECUTION

3.01 EXAMINATION
A. Inspect all components for shipping damage, conformance to specifications, and proper torques and tightness of fasteners, as specified in Section 15050 - Common Work Results for Mechanical Equipment.

Heavy-Duty Fabricated Stainless Steel Slide Gates
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3.02 INSTALLATION
A. Install equipment as indicated on the Drawings and as specified in Section 15050 - Common Work Results for Mechanical Equipment and the manufacturer's written installation instructions.

B. Mount thimbles and gates plumb in both vertical planes and level in horizontal plane.

C. Coat seating surfaces between frame and wall thimble with a waterproof plastic compound or provide EPDM gasket prior to tightening frame studs.

D. Adjust wedges or other parts of the gate to the point where it will not be possible to insert a 0.004 inch feeler gauge between the gate slide and the gate frame at any point.

1. Securely lock wedges into position after adjustment.

E. Adjust limit switches in electric and hydraulic operators in accordance with manufacturer's instructions.

F. Face mounted gates:

1. Where wall thimbles are not provided, mount gate to wall with anchor bolts and provide a 1-inch grout pad in accordance with manufacturer’s recommendations.

G. Embedded gates:

1. Provide blockouts in sidewalls and channel bottom for installation of gates.

2. After gate placement, adjustment, and alignment in accordance with manufacturer’s recommendations, grout frame with non-shrink grout.

3.03 COMMISSIONING
A. As specified in Section 01756 - Commissioning and this Section.

B. Manufacturer services:

1. Provide certificates:
a. Manufacturer’s Certificate of Installation and Functionality Compliance.

2. Manufacturer’s Representative onsite requirements:
a. Installation: 1 trip, 1 day minimum.
b. Functional Testing: 1 trip, 1 day minimum each.

3. Training:
a. Maintenance: 2 hours per session, 2 sessions.
b. Operation: 2 hours per session, 2 sessions.

4. Process operational period:
a. As required by Owner or Contractor.

C. Functional testing:

1. Test witnessing: Witnessed.

2. After gate installation and checking, run gates through at least 2 full cycles from the closed position to full open position and back to the closed position.

Heavy-Duty Fabricated Stainless Steel Slide Gates
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3. Leakage tests:
a. Conduct in accordance with AWWA C561. Comply with specified allowable leakage limits.

3.04 GATE SCHEDULE
A. The Gate Schedule is indicated on the Drawings.

B. Gate Schedule is not a take-off list.

1. Contractor shall provide gates specified and as indicated on the Drawings.

END OF SECTION

Vertical Turbine Short Setting Centrifugal Pumps
11312D-1 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (BidSetFinal) SECTION 11312D

VERTICAL TURBINE SHORT SETTING CENTRIFUGAL PUMPS
PART 1 GENERAL

1.01 SUMMARY
A. Section includes:

1. Pump systems including vertical turbine pumps with radial, mixed flow, or axial (propeller) type impellers and drivers as scheduled.

B. Tag numbers: As specified in Pump Schedule.

1.02 REFERENCES
A. American Bearing Manufacturers Association (ABMA):

1. 9 - Load Ratings and Fatigue Life for Ball Bearings.

2. 11 - Load Ratings and Fatigue Life for Roller Bearings.

B. American Society of Mechanical Engineers (ASME):

1. B16.1 - Cast Iron Pipe Flanges and Flanged Fittings, Class 25, 125, and 250.

2. B16.5 - Pipe Flanges and Flanged Fittings: NPS 1/2 through 24.

3. PTC 8.2 - Centrifugal Pumps.

C. American Water Works Association (AWWA):

1. C205 - Standard for Cement-Mortar Protective Lining and Coating for Steel Water Pipe, 4 In. (100 mm) and Larger-Shop Applied.

D. ASTM International (ASTM):

1. A48 - Standard Specification for Gray Iron Castings.

2. A53 - Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless.

3. A108 - Standard Specification for Steel Bars, Carbon and Alloy, Cold-Finished.

4. A276 - Standard Specification for Stainless Steel Bars and Shapes.

5. A278 - Standard Specification for Gray Iron Castings for Pressure-Containing Parts for Temperatures Up to 650°F (350°C).

6. A283 - Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates.

7. A516- Standard Specification for Pressure Vessel Plates, Carbon Steel, for Moderate-and Lower-Temperature Service.

8. A582 - Standard Specification for Free-Machining Stainless Steel Bars.

9. A743 - Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application.

10. B30 - Standard Specification for Copper Alloys in Ingot Form.

11. B505 - Standard Specification for Copper Alloy Continuous Castings.

12. B584 - Standard Specification for Copper Alloy Sand Castings for General Applications.

Vertical Turbine Short Setting Centrifugal Pumps
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13. F593 - Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs.

14. F594 - Standard Specification for Stainless Steel Nuts.

E. Hydraulic Institute (HI):

1. 9.1-9.5 - Pumps - General Guidelines for Types, Definitions, Application, Sound Measurement and Decontamination.

2. 14.1-14.2 – Rotodynamic Pumps for Nomenclature and Definitions.

3. 14.3 - Rotodynamic Pumps for Design and Application.

4. 14.4 - Rotodynamic Pumps for Installation Operation and Maintenance.

5. 14.6 - Rotodynamic Pumps for Hydraulic Performance Acceptance Tests.

1.03 DEFINITIONS
A. Pump head (total dynamic head, TDH), flow capacity, pump efficiency, net positive suction head available (NPSHa), and net positive suction head required (NPSHr):

As defined in HI 9.1-9.5, 14.1-14.2, 14.3, 14.4, and 14.6 and as modified in the Specifications. The pump head and efficiency are evaluated at the outlet of the discharge head and include the net losses in the pump column and discharge head, and intake basket or strainer (when specified).

B. Flow, head, efficiency, and motor horsepower specified in this Section are minimums unless stated otherwise.

C. Suction head: Gauge pressure available at pump intake flange or bell in feet of fluid above atmospheric.

D. Tolerances: This Section and related sections contain tolerances that may be more stringent than Hydraulic Institute Standard tolerances. Where tolerances are not mentioned, Hydraulic Institute Standards 9.1-9.5, 14.1-14.2, 14.3, and 14.4 shall apply.

E. Allowable Operating Region (AOR): The region over which the service life of the pump is not seriously compromised by hydraulic loads, vibration, or flow separation where the pump’s vibration, noise, and cavitation are within acceptable limits.

F. Preferred Operating Region (POR): The region over which the service life of the pump will not be significantly affected by hydraulic loads, vibration, or flow separation where the pump’s vibration, noise, and cavitation are within acceptable limits.

1.04 SUBMITTALS
A. Submit as specified in Section 01330 - Submittal Procedures.

B. Vibration analysis: Submit as specified in Section 15050 - Common Work Results for Mechanical Equipment when scheduled.

Vertical Turbine Short Setting Centrifugal Pumps
11312D-3 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (BidSetFinal) C. Product data: As specified in Section 15050 - Common Work Results for Mechanical Equipment:
a. Pump certification as specified in Section 01600 - Product Requirements. b. Weighted average lead calculations as specified in Section 01600 - Product Requirements.

D. Shop drawings: As specified in Section 15050 - Common Work Results for Mechanical Equipment.

E. Calculations: As specified in Section 15050 - Common Work Results for Mechanical Equipment:

1. Torsional analysis: Submit as specified in Section 15050 - Common Work Results for Mechanical Equipment when scheduled.

F. Vendor operation and maintenance manuals: As specified in Section 01782 - Operation and Maintenance Manuals.

G. Commissioning submittals:

1. Provide Manufacturer’s Certificate of Source Testing as specified in Section 01756 - Commissioning.

2. Provide Manufacturer’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

1.05 QUALITY ASSURANCE
A. As specified in Section 15050 - Common Work Results for Mechanical Equipment.

B. Provide pumps specified in this Section from same manufacturer.

C. Vibration analysis: Provide equipment vibration analysis as specified in this Section.

1. Vibration analysis level: As scheduled and as specified in Section 15050 - Common Work Results for Mechanical Equipment.

2. Vibration analysis expert: Provide when scheduled.

D. Manufacture’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

1.06 WARRANTY
A. As specified in Section 01783 - Warranties and Bonds.

PART 2 PRODUCTS

2.01 MANUFACTURERS
A. One of the following or equal:

1. Flowserve; model as scheduled.

2. Sulzer/Johnston Pumps; similar to scheduled model.

3. Peerless Pump; similar to scheduled model.

4. Weir/Floway; similar to scheduled model.

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5. National Pump Co.; similar to scheduled model.

6. Cascade Pump Company; similar to scheduled model.

2.02 DESIGN AND PERFORMANCE CRITERIA
A. Components: Pumps, drivers, motors, variable frequency drives, and drive arrangements as specified or as scheduled with shafts, columns, barrels, intermediate bearings, seals or packing, couplings, base plates, guards, supports, anchor bolts, necessary valves, gauges, taps, lifting eyes, stands, and other items as required for a complete and operational system.

B. Design requirements:

1. Pump performance characteristics:
a. As specified in the Pump Schedule.
b. All required conditions (flow/head) shall be within the pump manufacturer’s Allowable Operating Range (AOR).
c. Performance tolerances shall be the same as the test tolerances specified in Section 15958 - Mechanical Equipment Testing.
d. Pump curve shall be continuously rising throughout the design conditions listed in the pump schedule.

2. Motor characteristics: As specified in the Pump Schedule.

C. Product requirements as specified in Section 01600 - Product Requirements and Section 15050 - Common Work Results for Mechanical Equipment.

2.03 MATERIALS
A. General:

1. Pump Schedule materials: As specified in this Section.

B. Cast iron: ASTM A48, Class 30 minimum.

C. Nickel cast iron: ASTM A48, minimum Class 30, cast iron with 3 percent nickel.

D. Gray iron casting: ASTM A278, Class 30.

E. Iron-chromium alloy: ASTM A743, Grade CA40; ASTM A276, Type 420 Stainless Steel may be substituted; Brinell Hardness Number of 350 to 380.

F. Lead-free bronze except for bearings that require lead for lubricity: ASTM B584.

G. Leaded tin bronze: ASTM B505, Alloy C92700.

H. Bronze or high lead tin bronze: ASTM B584, Alloy 93800.

I. Leaded red brass: ASTM B584, Alloy C83600, leaded red brass.

J. Type 416 stainless: ASTM A582, Type 416 Stainless Steel.

K. Neoprene: Polychloroprene rubber.

L. Steel: ASTM A283, Grade D or ASTM A516 Gr. 70.

Vertical Turbine Short Setting Centrifugal Pumps
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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (BidSetFinal) M. Steel pipe: ASTM A53, Grade B.

N. Aluminum bronze meeting the requirements of Section 15050 - Common Work Results for Mechanical Equipment.

O. Lead-free aluminum bronze: ASTM B30.

2.04 GENERAL PUMP CONSTRUCTION
A. Type: Industrial, heavy duty, vertical turbine, centrifugal type pumps meeting performance requirements and features as scheduled and as specified.

B. Discharge flange: ASME B16.1 or B16.5 drilled; rated for 1.2 times the pump shutoff head at 150 degrees Fahrenheit.

C. Discharge nozzles: Provide 1/2-inch NPT taps for pressure gauges; install nipple and gauge with block valve.

D. Bearings:

1. Design driver/motor bearings to support the line shaft assembly and rated for ABMA L10 life of 40,000 hours at Design Rated Point flow and head in accordance with ABMA 9 or ABMA 11.

2. Design motor to withstand continuous duty full load thrust and momentary up thrust that may occur during pump on/off or other operations.

E. Fasteners: Provide Type 316 stainless steel fasteners in accordance with ASTM F593 or ASTM F594.

2.05 PUMP SUCTION ASSEMBLY
A. Pump suction assembly: Provide suction bell. Provide anti-vortex baffles and strainer when scheduled.

B. Design suction bells and provide strainers and anti-vortex baffles to minimize solids plugging and vortexing. Screens to have a flow area at least 4 times the suction pipe area.

C. Materials:

1. Pump suction bell: As scheduled.

2. Anti-vortex baffles: Same material as scheduled for pump suction bell.

3. Pump suction bell bearing: As scheduled.

4. Pump suction strainer: When strainer scheduled, provide Type 316 stainless steel.

2.06 PUMP IMPELLER BOWL ASSEMBLIES
A. Pump impeller assembly:

1. Type: As scheduled.

2. Maximum number of vanes: As scheduled.

3. Number of stages: As scheduled.

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4. Required balance: As specified in Section 15050 - Common Work Results for Mechanical Equipment to meet vibration criteria as specified in Section 15958 - Mechanical Equipment Testing.

5. Method of securing impellers to shafts: Keyed and secured by a bronze nut locked in place or locked by other methods acceptable to the Engineer.

Provide any special tools required for removal and installation of pump impellers.

6. Provisions for adjustment of axial clearance: Make such adjustment through use of motor adjusting nut or adjustable coupling.

7. Impeller thrust: When appropriate for the specified impeller type, provide hydraulically balanced impeller to minimize down thrust.

B. Intermediate and discharge impeller cases:

1. Material: As scheduled.

2. Attached with bolting.

C. Pump impeller bowl bearings: Provide bearing for each impeller; material as scheduled.

D. Diffusion vanes: Provide vanes cast into bowl.

E. Suction bowl bearings:

1. Provide bronze sleeved bearings with self-contained lubrication system filled with graphite type non-soluble grease when grease lubrication scheduled; provide bearing with sand cap.

F. Design with smooth water passages to reduce clogging by stringy or fibrous materials on impellers or shafting.

G. Design replaceable wear rings for both the bowl and impeller on each impeller bowl.

H. Design capable of passing solids with a sphere size as scheduled or larger.

I. Design impellers capable of working on pumps that may be abnormally started against closed manual valve or normally against a closed pump control valve.

2.07 LINE SHAFTS
A. Provide line shaft type and lubrication type as scheduled and as specified in this Section.

B. Open line shaft, product lubricated:

1. Shaft and couplings:
a. Provide keyed shaft type mechanical couplings with key or set screw locking of shaft couplings.
1) Threaded shaft connections are not allowed.

2. Bearings and bearing retainers: Provide bearings and retainers spaced as scheduled, but not to exceed 10 feet; provide at least 1 bearing for each line shaft length; provide grease fitting for top bearing extended to outside any guards when grease lubrication specified.

Vertical Turbine Short Setting Centrifugal Pumps
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3. Materials:
a. Shaft and couplings: As scheduled; where hard faced steel shaft is specified, hard face at sleeve bearings to 550 Brinell minimum. b. Bearings and bearing retainers: As scheduled; when not scheduled, Neoprene rubber bearings with bronze retainers.

C. Enclosed line shaft, oil lubricated:

1. Shaft and couplings: Provide flanged shaft couplings with key or set screw locking of shaft couplings.

2. Shaft bearings and spiders: Provide bearings and retainers as scheduled, but not to exceed 10 feet and enclosing tube spiders spaced at 30 feet maximum; provide oil reservoir volume for 3 days continuous use.

3. Enclosing tube: Pipe, thickness as scheduled.

4. Materials: As scheduled; when not scheduled provide:
a. Shaft and couplings: ASTM A108, Grade 1045 steel with ASTM A276, Type 316 hardened stainless steel journal or sleeve at each bearing. b. Shaft bearings and spiders: ASTM B584, Alloy C83600 leaded red brass bearings; Neoprene rubber spider on enclosing tube.
c. Enclosing tube: Steel pipe, ASTM A53, Grade B unless scheduled otherwise.

D. Design strength: Able to withstand minimum 1.5 times maximum operating torque and other loads.

E. Resonant frequency: As specified in Sections 15050 - Common Work Results for Mechanical Equipment and 15958 - Mechanical Equipment Testing.

F. Sleeves: Provide shafting with Type 316 stainless steel sleeve or hardened sleeves where shafts pass through bearings or stuffing boxes as scheduled; Brinell 550 or higher for hardened shaft; when the specified mechanical seals cannot be installed on a hardened shaft, hardened shafts are not required in the area of the mechanical seal.

G. Design pump line shafting in interchangeable lengths as scheduled, but not to exceed 10 feet; shaft lengths to match scheduled pump column lengths.

H. Coupling strength: Design driver to pump line shaft coupling of sufficient length and strength to maintain line shaft alignment.

I. Adjustment:

1. Design a means to adjust shaft position to adjust impeller position.

2. For motor driven units with solid shaft motors, design driver to pump line shaft coupling to allow adjustment of the impeller position.

3. For motor driven units with hollow shafts, an adjusting nut may be provided at the top of the motor shaft.

J. Spacer coupling: When mechanical seals are scheduled, provide an adjustable spacer coupling to allow removal of the seal without driver removal.

Vertical Turbine Short Setting Centrifugal Pumps
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2.08 PUMP COLUMN PIPE
A. Pump column pipe: Thickness and material as scheduled.

B. Head connection: Design with flanged and bolted connection to discharge head and flanged and bolted connection to impeller assembly to permit removal of impeller bowl assembly without disturbing the column or discharge connections.

C. Design Working Pressure: Design to withstand a design working pressure not less than 1.20 times the maximum shutoff total dynamic head with the maximum diameter impeller at the maximum operating speed plus the maximum suction static head.

D. Pressure test: Design to withstand a 5-minute hydrostatic test pressure not less than 1.5 times the design working pressure; perform test at source.

E. Lengths and connections: Design with maximum 10-foot length, or less if scheduled, interchangeable column sections with flanged or threaded with registered fit screwed connections as scheduled.

F. Diameter: Design column inside diameter for no more than 4 feet of fluid friction loss per 100 feet of column length.

2.09 PUMP BARREL/CAN
A. Pump barrel/can: Pipe thickness and material as scheduled and shall be provided by manufacturer; inlet as indicated on the Drawings.

B. Mounting flange: Sufficient strength and thickness to withstand 1.5 times the imposed loads under any operating condition.

C. Can lining: When scheduled, provide cement mortar lining in accordance with AWWA C205.

D. Can diameter: Provide can diameter so that free-flow cross-sectional area in the can after lining or coating is at least 10 percent more than the can inlet nozzle flow area.

2.10 PUMP DISCHARGE HEAD ASSEMBLY
A. Design the discharge head for above or base discharge as scheduled.

B. Design the discharge vertical to horizontal flow transition as a smooth pipe elbow or from a minimum of 3 pipe pieces mitered to form the elbow.

C. Design discharge head to mate with the driver as scheduled.

D. Head and base plate construction: Sufficient strength, weight, and thickness to provide accurate alignment, prevent excessive deflection and support the drive motor.

Vertical Turbine Short Setting Centrifugal Pumps
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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (BidSetFinal) E. Stuffing box and seal:

1. Design the discharge head with a stuffing box to accommodate packing or mechanical seals as scheduled.

2. Shaft seal type: As scheduled and as specified in Section 15050 - Common Work Results for Mechanical Equipment.
a. Packing: When packing scheduled, provide stuffing box arranged for packing (sized for bronze lantern ring and 6 packing rings minimum); provide hollow shaft motor with top adjusting nut.
b. Mechanical seal: When scheduled, provide stuffing box suitable for the specified seal and provide solid shaft motor with spacer coupling.

3. Drain: Provide drain, minimum 3/4-inch size, for pump stuffing box leakage, together with drain line to the pump can or wet well or to nearest equipment drain as indicated on the Drawings.

F. Discharge vent: Provide 3/4-inch NPT threaded high point vent on discharge; install pipe nipple with threaded ball valve in vent.

G. Barrel/Can vent: When pump is indicated to be installed in a barrel/can, provide 1 inch NPT threaded tap on base plate to vent accumulated air at the barrel/can high point; install pipe nipple with threaded ball valve in vent.

H. Materials: As scheduled; when not scheduled, provide:

1. Pump discharge head/driver stand: Steel, ASTM A283, Grade B and/or ASTM A53, Grade B; or cast iron, ASTM A48, Class 30 minimum.

2. Pump discharge head sleeve bearing: Bronze.

3. Stuffing box and seal: Container and gland, cast iron, ASTM A48, Class 30 minimum; Neoprene top shaft seal.

2.11 EQUIPMENT GUARDS
A. Provide equipment safety guards as specified in Section 15050 - Common Work Results for Mechanical Equipment.

2.12 DRIVERS
A. Horsepower:

1. As scheduled.

2. Listed driver horsepower is the minimum to be supplied. a. Increase driver horsepower if required to prevent driver overload while operating at any point of the supplied pump operating head-flow curve including runout.
b. When scheduled driver is a motor, increase motor horsepower if required to prevent operation in the service factor.
c. Make all structural, mechanical, and electrical changes required to accommodate increased horsepower.

B. Motors: Provide motors as specified in Section 16222 - Low Voltage Motors up to 500 Horsepower and as specified in this Section:

1. RPM: As scheduled:

2. Enclosure: As scheduled.

3. Electrical characteristics: As scheduled.

Vertical Turbine Short Setting Centrifugal Pumps
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4. Efficiency, service factor, insulation, and other motor characteristics: As specified in Section 16222 - Low Voltage Motors up to 500 Horsepower.

5. Motor accessories: As specified in Section 16222 - Low Voltage Motors up to 500 Horsepower and in this Section.

6. Coordinate motors with the variable frequency drive manufacturer to ensure compatibility between the motor and variable frequency drive.

C. Variable frequency drives (VFDs): As scheduled and as specified in Sections 16262 - Variable Frequency Drives 0.50 - 50 Horsepower and 16265 - Reduced Harmonic Variable Frequency Drives.

1. Contractor to coordinate with the existing pump manufacture to replace existing pump motor with new VFD duty rated motor.

D. Other drivers: As scheduled and as specified in sections listed in the Schedule.

E. Non-reverse ratchets: When scheduled, provide driver with non-reverse ratchets or pin mechanism to prevent reverse rotation of the pump and driver in the event of discharge valve failure.

2.13 SUPPORTS
A. Strength: Design pump discharge head and driver (motor or engine) supports to withstand a minimum of 1.5 times the maximum imposed operating loads or the imposed seismic loads, whichever is greater.

B. Resonant frequency: Design supports in conjunction with the pump, shafting, drivers, bearings, and other components to avoid natural resonant frequencies, either torsional, radial, or axial as specified in Section 15958 - Mechanical Equipment Testing.

C. Coordinate pump and drive system supports with the foundation designs as indicated on the Drawings.

D. Anchor bolts: As specified in Section 05190 - Mechanical Anchoring and Fastening to Concrete and Masonry.

2.14 SPARE PARTS AND SPECIAL TOOLS
A. Spare parts:

1. Seal packing material: 1 set of each type supplied.

2. Line shaft rubber bearings: 1 set for each type pump.

3. Line shaft bronze bearings: 1 set for each type pump.

4. Impeller and bowl wear rings: 1 set for each type of pump.

5. Mechanical seal: 1 complete seal of each type.

6. Motor/gear thrust bearing set: 1 for each type of pump.

7. Motor radial bearing set: 1 for each size of motor (if specified).

8. Pump impeller/bowl assembly: 1 of each type supplied.

9. Line shaft: 1 length of each size and type.

B. Special tools: Deliver 1 set for each furnished pump type and size needed to assemble and disassemble pump system.

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3.01 PREPARATION
A. Anchoring and bracing to structures:

1. Prepare equipment anchor setting template(s) and use to position anchors during construction of supporting structure(s).

2. Install anchors of type and material indicated on approved anchoring designs.

3. Install anchors with embedment indicated on approved anchoring designs.

3.02 INSTALLATION
A. Install the equipment in accordance with the accepted installation instructions and anchorage details.

B. General:

1. Install free-standing enclosures on a raised concrete housekeeping pad:
a. Provide structural leveling channels in accordance with the manufacturer’s recommendations to provide proper alignment of the units. b. Weld and/or bolt the VFD frame to the leveling channels.

2. Provide openings in top or bottom of the VFD (free-standing or within motor control center) enclosure for conduit only, no additional openings will be allowed:
a. Improperly cut holes will require that the entire panel be replaced:
1) No hole closers or patches will be allowed.

3. Bundle circuits together and terminate in each unit:
a. Tie with nylon wire ties.
b. Label all wires at each end with wire numbers shown on the approved control drawings.

4. Replace existing motor for the existing carousel pump(s) with new VFD duty rate motor. Motor selection shall be coordinated with the existing pump manufacturer, and specification section 16222 and 16262. The existing motors are manufactured by NIDIC Motor Corporation, Model BF48A, and Catalog No.: H040S2BLG.

3.03 COMMISSIONING
A. As specified in Section 01756 - Commissioning and this Section.

B. Manufacturer services:

1. Provide certificates:
a. Manufacturer’s Certificate of Source Testing.
b. Manufacturer’s Certificate of Installation and Functionality Compliance.

2. Manufacturer’s Representative onsite requirements:
a. Installation: 1 trip, 1-day minimum.
b. Functional Testing: 1 trip, 1-day minimum each.

3. Training:
a. Maintenance: 4 hours per session, 2 sessions.
b. Operation: 2 hours per session, 2 sessions.

4. Process operational period:
a. As required by Owner or Contractor.

Vertical Turbine Short Setting Centrifugal Pumps
11312D-12 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (BidSetFinal) C. Source testing: As specified in the Pump Schedule.

D. Functional testing: As specified in the Pump Schedule.

Vertical Turbine Short Setting Centrifugal Pumps
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3.04 PUMP SCHEDULE
Tag Numbers PMP-89100,
PMP-89101 PMP-89102 PMP-91100 PMP-99411, 99412, 99413, 99414 Location Carousel Pump Station PAU Pump
Station
Recycled Water
Pump Station
Drawing(s) 89D01, 89D02, 89M01, 89M02,
89E01, 89E02, 89N01
91M01, 91E01,
91N01
98M01, 99E03,
99N01, 99N02,
General Characteristics:

Application Wastewater Wastewater Wastewater Recycled Water Service Secondary
Effluent
Secondary
Effluent
Secondary
Effluent
Reclaimed Water
Pump
Quantity Note 1 1 1 4 installed
First Named Manufacturer's Model Number Note 1 12AF 12EQH 12RL-SS Maximum Noise, dBA at 3 feet Note 1 85 85 85
Minimum Pumped Fluid Degrees Fahrenheit Note 1 50 50 50 Normal Pumped Fluid Degrees Fahrenheit Note 1 70 70 70
Maximum Pumped Fluid Degrees Fahrenheit Note 1 85 85 85 Vibration Analysis Level Note 1 None None None
Vibration Analysis Expert Note 1 Not Required Not Required Not Required Pump Characteristics:

Number of Stages Note 1 Per
Manufacturer
Per
Manufacturer Per Manufacturer
Impeller Type Note 1 Enclosed Enclosed
Impeller, Maximum Number of Vanes Note 1 Per
Manufacturer
Per
Manufacturer
Per Manufacturer
Pass Minimum Sphere Size, Inch Note 1 1-inch 1-inch 0.75-inch

Vertical Turbine Short Setting Centrifugal Pumps
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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (BidSetFinal) Tag Numbers PMP-89100,
PMP-89101 PMP-89102 PMP-91100 PMP-99411, 99412, 99413, 99414 Location Carousel Pump Station PAU Pump
Station
Recycled Water
Pump Station
Drawing(s) 89D01, 89D02, 89M01, 89M02,
89E01, 89E02, 89N01
91M01, 91E01,
91N01
98M01, 99E03,
99N01, 99N02,
Pump Impeller Bowl Bearing Lubrication Note 1 Product
Lubricated
Product
Lubricated
Product Lubricated
Shaft Seal Type Note 1 Type 1 Type 1 Type 1
Suction Bowl Bearing Lubrication Note 1 Grease Grease Product Lubricated Suction Strainer Note 1 Required Required None
Anti-Vortex Baffle Note 1 None Required None Required None Line Shaft Type Note 1 Open Open Open
Minimum Line Shaft Bearing Spacing, Feet Note 1 10 10 10 Line Shaft Lubrication Note 1 Product Product Product
Column Connection Type Note 1 Flanged Flanged Threaded
Maximum Column Section Lengths, Feet Note 1 10 10 10
Pump Barrel or Can Note 1 None Required None Required Can Discharge Arrangement Note 1 Above Base Above Base Base Coupling Type Note 1 Spacer Spacer No Coupling
Speed Control Variable
Frequency Drive
Variable
Frequency
Drive
Variable
Frequency Drive
Variable Frequency
Drive
Maximum Pump rpm 1780 1780 1180 1800
Minimum Pump rpm 885 885 880 880

Vertical Turbine Short Setting Centrifugal Pumps
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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (BidSetFinal) Tag Numbers PMP-89100,
PMP-89101 PMP-89102 PMP-91100 PMP-99411, 99412, 99413, 99414 Location Carousel Pump Station PAU Pump
Station
Recycled Water
Pump Station
Drawing(s) 89D01, 89D02, 89M01, 89M02,
89E01, 89E02, 89N01
91M01, 91E01,
91N01
98M01, 99E03,
99N01, 99N02,
Rated Design Point (at Maximum Revolutions per Minute):

Flow, gpm Note 1 4000 1750 900
Head, Feet Note 1 21.9 15.00 240
Minimum Efficiency, Percent Note 1 65 73 80
Required Condition 2 (at Maximum Revolutions per Minute):

Flow, gpm Note 1 2000 1000 600 to 700
Head Range, Feet Note 1 38 to 42 18 to 20 310 to 280
Minimum Efficiency, Percent Note 1 32 64 70
Required Condition 3 (at Maximum Revolutions per Minute):

Flow, gpm Note 1 4500 2000 1,000 to 1,100
Head Range, Feet Note 1 22 to 26 11 to 13 220 to 180
Minimum Efficiency, Percent Note 1 68 74 76
Other Conditions:

Maximum Shut Off Head, Feet Note 1 73 27 344
Maximum NPSHr at every Specified Flow, Feet Note 1 Manufacture To Specify
Manufacture to
Specify
25 Minimum NPSHa at every Specified Flow, Feet Note 1 36.5 39.01 5 Minimum Suction Static Head, Feet Note 1 2.83 2 9
Maximum Suction Static Head, Feet Note 1 8.3 5 33

Vertical Turbine Short Setting Centrifugal Pumps
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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (BidSetFinal) Tag Numbers PMP-89100,
PMP-89101 PMP-89102 PMP-91100 PMP-99411, 99412, 99413, 99414 Location Carousel Pump Station PAU Pump
Station
Recycled Water
Pump Station
Drawing(s) 89D01, 89D02, 89M01, 89M02,
89E01, 89E02, 89N01
91M01, 91E01,
91N01
98M01, 99E03,
99N01, 99N02,
Pump Materials:

Suction Bell Note 1 Cast Iron Cast Iron Cast Iron
Suction Bell Bearing Note 1 Bronze Bronze High Lead Tin Bronze
Impeller Cases Note 1 Bronze Cast Iron Leaded Tin Bronze Impeller Note 1 Bronze Bronze Leaded Tin Bronze
Impeller Bearing Note 1 Bronze Bronze High Lead Tin
Bronze
Impeller Shaft Key Note 1 Steel Steel Steel, Gr 1045
Line Shaft and Coupling Note 1 Type 416
Stainless Steel
Type 416
Stainless Steel
Rubber Buna-N
Line Shaft Bearings Note 1 Neoprene Neoprene N/A
Shaft Enclosing Tube Note 1 Schedule 40
Steel Pipe
Schedule 40
Steel Pipe
Hardened
Shaft Sleeve Note 1 Hardened Hardened Steel Pipe, 0.25
Column Material and Thickness, Inch or
Schedule
Note 1 Steel Pipe, 0.25 Steel Pipe, 0.25 Steel Pipe, 0.50 Can Material and Thickness, Inch or Schedule Note 1 Steel Pipe, 0.50 Steel Pipe, 0.50 Epoxy Can Lining Note 1 Epoxy Epoxy Cement Mortar
Can Coating Note 1 Painted Painted Cast Iron

Vertical Turbine Short Setting Centrifugal Pumps
11312D-17 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (BidSetFinal) Tag Numbers PMP-89100,
PMP-89101 PMP-89102 PMP-91100 PMP-99411, 99412, 99413, 99414 Location Carousel Pump Station PAU Pump
Station
Recycled Water
Pump Station
Drawing(s) 89D01, 89D02, 89M01, 89M02,
89E01, 89E02, 89N01
91M01, 91E01,
91N01
98M01, 99E03,
99N01, 99N02,
Discharge Head/Driver Stand Note 1 Steel Steel High Lead Tin Bronze
Discharge Head Bearing Note 1 Ductile Iron Ductile Iron Cast Iron Discharge Stuffing Box Note 1 Cast Iron Cast Iron
Driver Characteristics:

Driver Type VFD Motor VFD Motor VFD Motor VFD Motor
Drive Arrangement Vertical, Coupled Vertical,
Coupled
Vertical,
Coupled
Vertical, Coupled
Non-Reverse Ratchets None Required None Required Required Minimum Driver Horsepower 40 40 10 75
Maximum Driver rpm 1800 1800 1200 1,800
Motor Characteristics (When Motor is Driver Type):

Inverter Duty Rated Yes Yes Yes Yes
Motor Voltage/Phases/Hertz 460/3/60 460/3/60 460/3/60 460/3/60 Enclosure Type WP1 WP1 WP1 TEFC

Vertical Turbine Short Setting Centrifugal Pumps
11312D-18 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (BidSetFinal) Tag Numbers PMP-89100,
PMP-89101 PMP-89102 PMP-91100 PMP-99411, 99412, 99413, 99414 Location Carousel Pump Station PAU Pump
Station
Recycled Water
Pump Station
Drawing(s) 89D01, 89D02, 89M01, 89M02,
89E01, 89E02, 89N01
91M01, 91E01,
91N01
98M01, 99E03,
99N01, 99N02,
Source Testing:

Test Witnessing Note 1 Witnessed Witnessed Not Witnessed Performance Test Level Note 1 2 2 2
Vibration Test Level Note 1 1 1 2
Noise Test Level Note 1 1 1 1
Functional Testing:

Performance Test Level Note 1 3 3 2
Vibration Test Level Note 1 2 2 2
Noise Test Level Note 1 2 2 1
Notes:

This pump is existing. Only the motor and VFD will be replaced on the pump.

END OF SECTION

Horizontal ANSI Centrifugal Pumps
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HORIZONTAL ANSI CENTRIFUGAL PUMPS
PART 1 GENERAL

1.01 SUMMARY
A. Section includes: Frame mounted, centrifugal, horizontal end suction pumps in accordance with ASME B73.1, with drivers and features as scheduled.

B. Tag numbers: As specified in Pump Schedule.

1.02 REFERENCES
A. American Bearing Manufacturers Association (ABMA).

B. American Society of Mechanical Engineers (ASME):

1. B73.1 - Specification for Horizontal End Suction Centrifugal Pumps for Chemical Process.

C. ASTM International (ASTM):

1. A48 - Standard Specification for Gray Iron Castings.

2. A108 - Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished.

3. A276 - Standard Specification for Stainless Steel Bars and Shapes.

4. A283 - Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates.

5. A322 - Standard Specification for Steel Bars, Alloy, Standard Grades.

6. A395 - Standard Specification for Ferritic Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures.

7. A494 - Standard Specification for Castings, Nickel, and Nickel Alloy.

8. A743 - Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application.

9. B367 - Specification for Titanium and Titanium Alloy Castings.

10. E10 - Standard Test Method for Brinell Hardness of Metallic Materials.

D. Hydraulic Institute (HI):

1. 9.1-9.5 - Pumps - General Guidelines.

2. 14.1-14.2 - Rotodynamic Pumps for Nomenclature and Definitions.

3. 14.3 - Rotodynamic Pumps for Design and Application.

4. 14.6 - Rotodynamic Pumps for Hydraulic Performance Acceptance Tests.

1.03 TERMINOLOGY
A. The words and terms listed below are not defined terms that require initial capital letters, but, when used in this Section have the indicated meaning.

1. Allowable Operating Region (AOR): The region over which the service life of the pump is not seriously compromised by hydraulic loads, vibration, or flow

Horizontal ANSI Centrifugal Pumps
11312O-2 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (BidSetFinal) separation where the pump’s vibration, noise, and cavitation are within acceptable limits.

2. Preferred Operating Region (POR): The region over which the service life of the pump will not be significantly affected by hydraulic loads, vibration, or flow separation where the pump’s vibration, noise, and cavitation are within acceptable limits.

3. Pump head (total dynamic head, TDH), flow capacity, pump efficiency, net positive suction head available (NPSHa), and net positive suction head required (NPSHr): As defined in HI 9.1-9.5, 14.1-14.2, 14.3, 14.6 and as modified in this Section.

4. Suction head: Gauge pressure available at pump intake flange or bell in feet of fluid above atmospheric; average when using multiple suction pressure taps, regardless of variation in individual taps.

5. Tolerances: In accordance with HI 9.1-9.5, 14.1-14.2, 14.3, and 14.6 unless specified more restrictively.

1.04 DELEGATED DESIGN
A. As specified in Section 01357 - Delegated Design Procedures.

B. Anchoring and bracing.

C. Rotordynamic analysis.

1.05 SUBMITTALS
A. Submit as specified in Section 01330 - Submittal Procedures.

B. Delegated Design Submittals:

1. Provide project-specific calculations based on support conditions and requirements to resist loads specified in Section 01850 - Design Criteria.

2. Anchoring and bracing:
a. Design of equipment support structures or pedestals and associated anchoring to structures.

3. Rotordynamic analysis:

4. Level as scheduled.

C. Commissioning Submittals:

1. For commissioning submittals listed below and specified in this Section and as specified in Section 01756 - Commissioning:
a. Manufacturer’s representative qualifications.
b. Certificates.
1) Requirements as specified in this Section.
c. Test Plans:
1) Test requirements as specified in this Section.
d. Test Reports:
e. Manufacturer’s representatives field notes and data. f. Owner training.

Horizontal ANSI Centrifugal Pumps
11312O-3 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (BidSetFinal) D. As specified in Section 01600 - Product Requirements.

1. Product data.
a. Pump certification.
b. Weighted average lead.

2. Shop drawings.

3. Calculations:
a. Torsional analysis.

E. Vendor operation and maintenance manuals: As specified in Section 01782 - Operation and Maintenance Manuals.

1.06 WARRANTY
A. As specified in Section 01783 - Warranties and Bonds.

PART 2 PRODUCTS

2.01 MANUFACTURERS
A. Pump: One of the following or equal:

1. Flowserve Co., model as scheduled.

2. ITT Ind., similar to scheduled model.

2.02 DESIGN AND PERFORMANCE CRITERIA
A. Horizontal, centrifugal, ASME B73.1 end suction pump, drivers, motors, seals or packing, couplings, base plates, guards, supports, anchor bolts, necessary valves, gauges, taps, lifting eyes, stands, and other items as required for a complete and operational system.

B. Design requirements:

1. Pump performance characteristics:
a. As specified in Pump Schedule.
b. Rotordynamic analysis level: As scheduled and as specified in Section 15050 - Common Work Results for Mechanical Equipment. 1) Vibration analysis expert: Provide when scheduled.
c. All required conditions (flow/head) shall be within the pump manufacturer’s Allowable Operating Range (AOR).
d. Performance tolerances shall be the same as the test tolerances specified in Section 15958 - Mechanical Equipment Testing

2. Motor characteristics: As specified in Pump Schedule.

C. Product requirements as specified in Section 01600 - Product Requirements and Section 15050 - Common Work Results for Mechanical Equipment.

Horizontal ANSI Centrifugal Pumps
11312O-4 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (BidSetFinal)

2.03 MATERIALS
A. General:

1. Materials in the Pump Schedule shall be the type and grade as specified in this Section.

2. Drinking Water Pumps: Provide materials in conformance with Section 15050 - Common Work Results for Mechanical Equipment.

B. Cast iron: ASTM A48, Class 30 minimum.

C. Ductile iron: ASTM A395.

D. Steel: ASTM A108, grade as scheduled or ASTM A322, grade as scheduled.

E. Stainless steel: ASTM A276, type as scheduled.

F. Iron-chromium alloy: ASTM A743, Grade CA40.

G. Structural steel: ASTM A283, Grade D.

H. Hastelloy C: ASTM A494, Grade CW-12M-2.

I. Titanium: ASTM B367, Grade C-3.

2.04 GENERAL PUMP CONSTRUCTION
A. Type: Horizontal centrifugal, end suction pumps manufactured in accordance with ASME B73.1, except as modified in this Section.

B. Other requirements:

1. Vibration: In accordance with ASME B73.1 or as specified in Section 15958 - Mechanical Equipment Testing, whichever is more stringent.

2.05 PUMP CASINGS
A. Type: 1-piece volute type with integral suction and discharge nozzles.

B. Material: As scheduled.

C. Design working pressure: Minimum 1.10 times maximum shutoff total dynamic head with maximum installable impeller diameter at maximum operating speed plus maximum suction static head.

D. Hydrostatic test: 10-minute hydrostatic test at minimum 1.5 times design working pressure.

2.06 IMPELLERS
A. Type: As scheduled.

B. Material: As scheduled.

Horizontal ANSI Centrifugal Pumps
11312O-5 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (BidSetFinal) C. Method of securing to shafts: Threaded impeller in accordance with ASME B73.1.

D. Balance: As specified in Section 15050 - Common Work Results for Mechanical Equipment and vibration criteria as specified in Section 15958 - Mechanical Equipment Testing.

2.07 PUMP SHAFTS
A. Material: As scheduled.

B. Strength: Able to withstand minimum 1.5 times maximum operating torque and other loads.

C. Solid shaft without sleeve.

2.08 STUFFING BOXES
A. Type: In accordance with ASME B73.1, Figure 3, with universal cover adapter.

B. Materials: As scheduled.

C. Shaft seal type: As scheduled and as specified in Section 15050 - Common Work Results for Mechanical Equipment.

D. Drain: Minimum 3/8-inch size, with drain line to nearest equipment floor drain.

2.09 BEARINGS AND BEARING FRAME
A. Bearing type: Anti-friction meeting ABMA standards; self-aligning spherical roller type radial bearings; double row ball type or tapered roller for thrust bearings.

B. Bearing lubrication: Grease or oil lubricated as scheduled:

1. For oil lubricated, provide pressure lubricating system or separate oil reservoir type system with oil filler pipe and external level indicator gauge.

2. For grease lubricated, provide external grease fittings with grease relief pipe.

3. Size sufficiently to safely absorb heat energy normally generated in bearing under maximum ambient temperature of 60 degrees Celsius.

C. Bearing life: In accordance with ASME B73.1.

D. Pump bearing frames:

1. Material: As scheduled.

2. Provide a 1-piece rigid construction with bearing housing at outboard (pump) end, and end cover or housing at inboard (driver) end.

E. Grease seals and deflectors: Lip type seals and labyrinth type deflectors at both ends of bearing housings, able to prevent entrance of contaminants.

F. Bearing isolators: Provide bearing isolators on each end with integral locking ring to prevent leakage past the shaft.

1. Manufacturers: The following or equal:
a. Inpro Model VBX.

Horizontal ANSI Centrifugal Pumps
11312O-6 8660F10 April 2023
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2.10 COUPLINGS
A. Types: As scheduled and as specified in Section 15050 - Common Work Results for Mechanical Equipment.

B. Design coupling to withstand a minimum of 1.5 times the maximum operating torque and other imposed loads.

2.11 SUPPORTS, PEDESTALS, AND BASEPLATES
A. Type: Provide baseplate and supports in accordance with ASME B73.1.

B. Materials: Same as pump casing or ASTM A283 steel, hot-dip galvanized after fabrication and coated as specified in Section 09960 - High-Performance Coatings.

C. Pump and driver support strength: Able to withstand minimum 1.5 times maximum imposed operating loads or imposed seismic loads, whichever is greater.

D. Anchor bolts: As specified in Section 05190 - Mechanical Anchoring and Fastening to Concrete and Masonry.

2.12 EQUIPMENT GUARDS
A. Provide equipment safety guards as specified in Section 15050 - Common Work Results for Mechanical Equipment.

2.13 DRIVERS
A. Horsepower:

1. As scheduled.

2. Listed driver horsepower is the minimum to be supplied:
a. Increase driver horsepower if required to prevent driver overload while operating at any point of the supplied pump operating head-flow curve including runout.
b. When scheduled driver is a motor, increase motor horsepower if required to prevent operation in the service factor.
c. Make all structural, mechanical, and electrical changes required to accommodate increased horsepower.

B. Motors: Provide motors as specified in Section 16222 - Low Voltage Motors up to 500 Horsepower and as specified in this Section:

1. Revolutions per minute: As scheduled.

2. Enclosure: As scheduled.

3. Electrical characteristics: As scheduled.

4. Efficiency, service factor, insulation, and other motor characteristics: As specified in Section 16222 - Low Voltage Motors up to 500 Horsepower.

Horizontal ANSI Centrifugal Pumps
11312O-7 8660F10 April 2023
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5. Motor accessories: As specified in Section 16222 - Low Voltage Motors up to 500 Horsepower and in this Section.

6. Coordinate motors with the variable frequency drive manufacturer to ensure compatibility between the motor and variable frequency drive.

C. Other drivers: As scheduled and as specified in sections listed in the Schedule.

2.14 SPARE PARTS AND SPECIAL TOOLS
A. Special tools: Deliver 1 set for each furnished pump type and size needed to assemble and disassemble pump system.

B. Spare parts: Deliver the following as specified in Section 01600 - Product Requirements:

1. Pump thrust bearing set.

2. Pump radial bearing set.

3. Gasket set.

4. Motor bearing set of each type.

5. Pump impeller, trimmed to match installed impeller.

6. Mechanical seal rebuild set.

PART 3 EXECUTION

3.01 PREPARATION
A. Anchoring and bracing to structures:

1. Prepare equipment anchor setting template(s) and use to position anchors during construction of supporting structure(s).

2. Install anchors of type and material indicated on approved anchoring designs.

3. Install anchors with embedment indicated on approved anchoring designs.

3.02 INSTALLATION
A. Install the equipment in accordance with the accepted installation instructions and anchorage details.

3.03 COMMISSIONING
A. As specified in Section 01756 - Commissioning.

B. Source Testing (Factory Acceptance Tests):

1. Not witnessed.

2. Furnish test reports and Manufacturer’s Certificate of Source Testing.

3. Equipment Testing:
a. Pump:
1) Performance test: Test level as scheduled; test as specified in Section 15958 - Mechanical Equipment Testing.
2) Vibration test: Test level as scheduled; test as specified in Section 15958 - Mechanical Equipment Testing.

Horizontal ANSI Centrifugal Pumps
11312O-8 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (BidSetFinal) 3) Noise test: Test level as scheduled; test as specified in Section 15958 - Mechanical Equipment Testing.
4) Pump casing: Hydrostatic pressure tests if specified in this Section. b. Motor: Test as specified in Section 16222 - Low Voltage Motors up to 500 Horsepower.

C. Installation Verification:

1. Furnish Manufacturer’s Certificate of Installation Verification.

D. Functional testing:

1. Equipment testing:
a. Pump:
1) Performance test: Test level as scheduled; test as specified in Section 15958 - Mechanical Equipment Testing.
2) Vibration test: Test level as scheduled; test as specified in Section 15958 - Mechanical Equipment Testing.
3) Noise test: Test level as scheduled; test as specified in Section 15958 - Mechanical Equipment Testing.
b. Motor: Test as specified in Section 16222 - Low Voltage Motors up to 500 Horsepower.

E. Owner Training:

1. Perform Owner training as specified in Section 01756 - Commissioning.

2. Number of sessions:
a. Operations: 1.
b. Maintenance: 1.

3.04 PUMP SCHEDULE
Tag Numbers PMP-85104
General Characteristics:

Application Wastewater
Service Secondary Effluent
Quantity 1
First Named Manufacturer’s Model 2K3X2-10ARV
Normal Pumped Fluid Degrees Fahrenheit 60
Rotordynamic Analysis Level None
Vibration Analysis Expert Not Required

Horizontal ANSI Centrifugal Pumps
11312O-9 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (BidSetFinal) Tag Numbers PMP-85104
Pump Characteristics:

Impeller Type Open
Bearing Lubrication Grease
Shaft Seal Type Type 3
Speed Control Fixed
Maximum Pump Revolutions per Minute 1750
Suction Flange Size, Minimum (in.) 3
Discharge Flange Size, Minimum (in.) 2
Rated Design Point (at Maximum Revolutions per Minute):

Flow, Gallons per Minute 140
Head, Feet 75
Minimum Efficiency, Percent 50
Pump Materials:

Pump Casing Ductile Iron
Impeller Ductile Iron
Impeller Wear Ring 420 Stainless
Casing or Suction Head Wear Ring 420 Stainless
Shaft 316 Stainless
Shaft Sleeve 316 Stainless
Stuffing Boxes Ductile Iron
Driver Characteristics:

Driver Type Motor
Drive Arrangement Horizontal, Coupled
Minimum Driver Horsepower 7.5
Maximum Driver Speed, Revolutions per Minute 1800
Motor Characteristics (When Motor is Driver Type):

Inverter Duty Rated No
Motor Voltage/Phases/Hertz 460/3/60
Enclosure Type TEFC

Horizontal ANSI Centrifugal Pumps
11312O-10 8660F10 April 2023
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Source Testing:

Performance Test Level 1
Vibration Test Level 1
Noise Test Level 1
Functional Testing:

Performance Test Level 1
Vibration Test Level 1
Noise Test Level 1

END OF SECTION

Horizontal Self-Priming Sample Centrifugal Pumps
11313E-1 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11313E (BidSetFinal) SECTION 11313E

HORIZONTAL SELF-PRIMING SAMPLE CENTRIFUGAL PUMPS
PART 1 GENERAL

1.01 SUMMARY
A. Section includes:

1. Requirements for provision of pump systems including self-priming centrifugal motor driven pumps are included.

B. Tag numbers: As specified in Pump Schedule.

1.02 REFERENCES
A. American Welding Society (AWS):

1. D1.1 - Structural Welding Code - Steel.

B. ASTM International (ASTM):

1. A48 - Standard Specification for Gray Iron Castings.

2. A108 - Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished.

3. A276 - Standard Specification for Stainless Steel Bars and Shapes.

4. A283 - Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates.

5. A322 - Standard Specification for Steel Bars, Alloy, Standard Grades.

6. A536 - Standard Specification for Ductile Iron Castings.

7. A582 - Standard Specification for Free-Machining Stainless Steel Bars.

8. A666 - Standard Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar.

9. F593 - Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs.

10. F594 - Standard Specification for Stainless Steel Nuts.

C. Hydraulic Institute (HI):

1. 9.1-9.5 - Pumps - General Guidelines.

2. 14.1-14.2 - Rotodynamic Pumps for Nomenclature and Definitions.

3. 14.3 - Rotodynamic Pumps for Design and Application.

4. 14.6 - Rotodynamic Pumps for Hydraulic Performance Acceptance Tests.

D. National Electrical Manufacturers Association (NEMA).

1.03 DEFINITIONS
A. Allowable Operating Region (AOR): The region over which the service life of the pump is not seriously compromised by hydraulic loads, vibration, or flow separation where the pump’s vibration, noise, and cavitation are within acceptable limits.

B. Flow, head, efficiency, and driver horsepower specified in this Section are minimums unless stated otherwise.

Horizontal Self-Priming Sample Centrifugal Pumps
11313E-2 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11313E (BidSetFinal) C. Preferred Operating Region (POR): The region over which the service life of the pump will not be significantly affected by hydraulic loads, vibration, or flow separation where the pump’s vibration, noise, and cavitation are within acceptable limits.

D. Pump head (Total Dynamic Head, TDH), flow capacity, pump efficiency, net positive suction head available (NPSHa), and net positive suction head required (NPSHr):

As defined in HI 9.1-9.5, 14.1-14.2, 14.3, 14.6 and as modified in this Section.

1.04 SUBMITTALS
A. Submit as specified in Section 01330 - Submittal Procedures.

B. Vibration analysis: Submit as specified in Section 15050 - Common Work Results for Mechanical Equipment when scheduled.

C. Product data: As specified in Section 15050 - Common Work Results for Mechanical Equipment.

D. Shop drawings: As specified in Section 15050 - Common Work Results for Mechanical Equipment.

E. Calculations: As specified in Section 15050 - Common Work Results for Mechanical Equipment.

F. Vendor operation and maintenance manuals: As specified in Section 01782 - Operation and Maintenance Manuals.

G. Commissioning submittals:

1. Provide Manufacturer’s Certificate of Source Testing as specified in Section 01756 - Commissioning.

2. Provide Manufacturer’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

1.05 QUALITY ASSURANCE
A. As specified in Section 15050 - Common Work Results for Mechanical Equipment.

B. Provide pumps specified in this Section from same manufacturer.

C. Vibration analysis: Provide equipment vibration analysis as specified in this Section.

1. Vibration analysis level: As scheduled and as specified in Section 15050 - Common Work Results for Mechanical Equipment.

2. Vibration analysis expert: Provide when scheduled.

D. Manufacture’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

1.06 WARRANTY
A. As specified in Section 01783 - Warranties and Bonds.

Horizontal Self-Priming Sample Centrifugal Pumps
11313E-3 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11313E (BidSetFinal) PART 2 PRODUCTS

2.01 MANUFACTURERS
A. Pumps:

1. One of the following or equal:
a. Gorman-Rupp Company, AMT.
b. Barnes Pumps, similar to series listed.

2.02 DESIGN AND PERFORMANCE CRITERIA
A. Centrifugal self-priming pump with components: Pump, close coupled driver, bearings, seals, supports, anchor bolts, necessary valves, taps, and other items as required for a complete and operational system.

B. Provide pumps, drivers, couplings, and other components capable of intermittent or continuous operation while pumping specified fluid; loss of prime and possible siphoning of liquid from the pump casing shall be considered in design of the self-priming features.

C. Design requirements:

1. Pump performance characteristics:
a. As specified in the Pump Schedule.
b. All required conditions (flow/head) shall be within the pump manufacturer’s Allowable Operating Range (AOR).
c. Performance tolerances shall be the same as the test tolerances specified in Section 15958 - Mechanical Equipment Testing.

2. Motor characteristics: As specified in Pump Schedule.

D. Product requirements as specified in Section 01600 - Product Requirements and Section 15050 - Common Work Results for Mechanical Equipment.

2.03 MATERIALS
A. General: Materials in the Pump Schedule shall be the type and grade as specified in this Section.

B. Cast iron: ASTM A48, Class 30 minimum.

C. Ductile iron: ASTM A536, Grade as scheduled.

D. 316 Stainless: ASTM A276, Type 316 stainless steel or ASTM A666, Type 316 Stainless Steel.

E. 416 Stainless: ASTM A582, Type 416 stainless steel.

F. Steel: ASTM A108, Grade as scheduled.

G. Hot-wrought alloy steel: ASTMA322, Grade 4140, UNS Alloy G41400.

H. Structural steel: ASTM A283, Grade D.

Horizontal Self-Priming Sample Centrifugal Pumps
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2.04 GENERAL PUMP CONSTRUCTION
A. Type: Self-priming, centrifugal, sewage type pumps meeting performance and design requirements and features as specified in this Section.

B. Fasteners: Provide Type 316 stainless steel fasteners in accordance with ASTM F593 and ASTM F594.

2.05 PUMP CASINGS
A. Type: 1 or 2-piece.

B. Material: Cast Iron.

C. Construction: Of sufficient strength, weight, and thickness to provide accurate alignment, prevent excessive deflection, and support drive motor.

D. NPT suction and discharge ports meeting design working pressure.

E. Design internal suction check valve that can be removed through the cover plate.

Check valve plate shall be constructed of neoprene.

F. Hardware: Stainless steel.

G. Maximum working pressure: 75 pound per square inch.

H. Maximum temperature: 160 degrees Fahrenheit.

I. Vent and taps:

1. Provide castings with both 3/4-inch threaded low point and initial priming fill vent on casing. Install pipe nipples with threaded gate valves in drain and priming vent.

2.06 IMPELLERS
A. Type: Self-cleaning, semi-open or open.

B. Material: Ductile iron.

C. Design with smooth water passages to prevent clogging by stringy or fibrous materials.

D. Design impeller and volute for automatic unattended self-priming and repriming with a dry suction leg and without reliance on a suction check valve to maintain prime.

E. Rotation: Clockwise looking from top, unless otherwise indicated on the Drawings.

F. Balance: As specified in Section 15050 - Common Work Results for Mechanical Equipment to meet vibration criteria as specified in Section 15958 - Mechanical Equipment Testing.

Horizontal Self-Priming Sample Centrifugal Pumps
11313E-5 8660F10 April 2023
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2.07 SHAFT
A. Material: Stainless steel.

B. Strength: Able to withstand minimum 1.5 times maximum operating torque and other loads.

C. Resonant frequency: As specified in Sections 15050 - Common Work Results for Mechanical Equipment and 15958 - Mechanical Equipment Testing.

D. Deflection: Maximum 0.002 inches under operating conditions.

E. Impeller attachment: Taper fitted at impeller with key and bolt for securing impeller.

F. Pump shaft seal:

1. Silicon carbide mechanical seal.

2. Self-lubricating.

2.08 COUPLINGS
A. Type: Close coupled.

B. Flexible coupling life: Infinite at up to 0.3-degree misalignment angle total or per disk for disk type at maximum operating loads.

C. Design coupling to withstand a minimum of 1.5 times the maximum operating torque and other imposed loads.

2.09 DRIVERS
A. Horsepower:

1. As scheduled.

2. Listed driver horsepower is the minimum to be supplied. a. Increase driver horsepower if required to prevent driver overload while operating at any point of the supplied pump operating head-flow curve including runout.
b. However, electrical equipment is sized for scheduled horsepower.

B. Motors: Provide motors as specified in Section 16222 - Low Voltage Motors up to 500 Horsepower and as specified in this Section:

1. Revolutions per minute: As scheduled:

2. Enclosure: As scheduled.

3. Electrical characteristics: As scheduled.

4. Efficiency, service factor, insulation, and other motor characteristics: As specified in Section 16222 - Low Voltage Motors up to 500 Horsepower.

5. Motor accessories: As specified in Section 16222 - Low Voltage Motors up to 500 Horsepower and in this Section.

Horizontal Self-Priming Sample Centrifugal Pumps
11313E-6 8660F10 April 2023
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2.10 ANCHOR BOLTS
A. As specified in Section 05190 - Mechanical Anchoring and Fastening to Concrete and Masonry.

2.11 SPARE PARTS AND SPECIAL TOOLS
A. Spare parts: None.

B. Special tools: For each type or size of pump specified, provide 1 set of all special tools required for complete assembly or disassembly of all pump system components.

PART 3 EXECUTION

3.01 COMMISSIONING
A. As specified in Section 01756 - Commissioning and this Section.

B. Manufacturer services:

1. Provide certificates:
a. Manufacturer’s Certificate of Source Testing.
b. Manufacturer’s Certificate of Installation and Functionality Compliance.

2. Manufacturer’s Representative onsite requirements:
a. Installation: 1 trip, 5-day minimum.
b. Functional Testing: 2 trips, 2-day minimum each.

3. Training:
a. Maintenance: 4 hours per session, 2 sessions.
b. Operation: 2 hours per session, 2 sessions.

4. Process operational period:
a. As required by Owner or Contractor.

C. Source testing: As specified in Pump Schedule.

D. Functional testing: As specified in Pump Schedule.

3.02 PUMP SCHEDULE
Tag Numbers PMP-87134
General Characteristics:

Service Final Effluent
Quantity 1
Maximum Noise, dBA at 3 Feet 85
Minimum Pumped Fluid Degrees Fahrenheit 50
Normal Pumped Fluid Degrees Fahrenheit 70

Horizontal Self-Priming Sample Centrifugal Pumps
11313E-7 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11313E (BidSetFinal) Tag Numbers PMP-87134
Maximum Pumped Fluid Degrees Fahrenheit 85
Vibration Analysis Level None
Vibration Analysis Expert Not Required
Rated Design Point (at Maximum Revolutions per Minute):

Flow, gpm 20
Head, Feet 20
Motor Characteristics (When Motor is Driver Type):

Motor Specification Section 16222 - Low Voltage Motors up to 500 Horsepower
Motor Horsepower 0.5
Maximum Speed, Revolutions per Minute 1750
Service Factor 1.15
Voltage/Phases/Hertz 480/3/60
NEMA Enclosure Type TEFC
Source Testing:

Test Witnessing Not Witnessed
Performance Test Level None
Vibration Test Level None
Noise Test Level None
Functional Testing:

Performance Test Level 1
Vibration Test Level None
Noise Test Level None

END OF SECTION

Rotary-Lobe Blowers
11376A-1 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11376A (BidSetFinal) SECTION 11376A

ROTARY-LOBE BLOWERS
PART 1 GENERAL

1.01 SUMMARY
A. Section includes: Rotary-lobe blowers to supply air to the packaged water treatment system specified in Section 11802 - Packaged Water Treatment System Rehabilitation, including the related appurtenances specified herein and as indicated on the Drawings:

1. Automatic air supply valves and valve actuators as indicated on the Drawings and specified elsewhere.

2. Blower piping, valving, inlet filters, silencers, and instrumentation indicated on the Drawings and specified elsewhere.

B. As specified in Section 15050 - Common Work Results for Mechanical Equipment.

C. Tag numbers:

1. Air Wash Blower 1 (BLO-85106).

2. Air Wash Blower 2 (BLO-85107).

3. Air Wash Blower 3 (BLO-85108).

1.02 REFERENCES
A. American Bearing Manufacturers Association (ABMA):

1. 9 - Load Ratings and Fatigue Life for Ball Bearings.

2. 11 - Load Ratings and Fatigue Life for Roller Bearings.

B. American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE):

1. 52.1 - Testing for HVAC Air Filtration.

C. American Society of Mechanical Engineers (ASME):

1. B16.1 - Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250.

D. National Electrical Manufacturers Association (NEMA):

1. 250 - Enclosures for Electrical Equipment (1,000 V Maximum).

1.03 SUBMITTALS
A. Submit as specified in Section 01330 - Submittal Procedures.

B. Product data:

1. As specified in Section 15050 - Common Work Results for Mechanical Equipment.

2. Blower information:
a. Manufacturer.

Rotary-Lobe Blowers
11376A-2 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11376A (BidSetFinal) b. Model.
c. Blower speed in revolutions per minute.
d. Blower site capacity, actual cubic feet per minute.
e. Discharge pressure, pounds per square inch absolute. f. Horsepower required including loss in V-belt drive.
g. Weight of blower.
h. Weight of motor.
i. Free-field noise level at 3 feet from blower acoustic enclosure.

3. Motor performance and construction data.

4. Construction details of acoustic enclosure.

5. Descriptive brochures and applicable performance and construction data for each item of auxiliary equipment along with their weights.

6. Test data on equipment performance, vibration, and noise.

C. Shop drawings: As specified in Section 15050 - Common Work Results for Mechanical Equipment:

1. Blower panel device layout and material list.

D. Calculations: As specified in Section15050 - Common Work Results for Mechanical Equipment.

E. Vendor operation and maintenance manuals: As specified in Section 01782 - Operation and Maintenance Manuals.

F. Commissioning submittals:

1. Provide Manufacturer’s Certificate of Source Testing as specified in Section 01756 - Commissioning.

2. Provide Manufacturer’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

1.04 ENVIRONMENTAL CONDITIONS
A. Blower shall be suitable for continuous service and indoor installation.

1.05 WARRANTY
A. Provide warranty as specified in Section 01783 - Warranties and Bonds.

PART 2 PRODUCTS

2.01 DESIGN AND PERFORMANCE CRITERIA
A. System components: Aeration blowers, blower panel, and appurtenances.

B. General: Aeration blowers and appurtenances shall include the following items and supplied by blower manufacturer:

1. Rotary positive displacement blower and motor.

2. Air intake filters.

3. Silencers, inlet, discharge, and vent.

4. Butterfly valves and silencer in blowoff circuit.

Rotary-Lobe Blowers
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5. Check valves.

6. Relief valves.

7. Flexible pipe connectors.

8. Pressure gauges.

9. Acoustic enclosure.

10. Discharge Temperature gauge.

11. Appurtenances as required.

C. Design criteria:

Type of Blower Rotary lobe, positive displacement
Number of blowers 3
Rated speed 4,535 RPM
Rated inlet air flow at rated speed
SCFM
447
Inlet filter/Silencer pressure loss 0.5 pounds per square inch Rated discharge pressure 19.1 psia
Rated inlet pressure 14.1 psia
Inlet temperature 104 degrees F

1. Motor: As specified in Section 16222 - Low Voltage Motors up to 500 Horsepower, except as otherwise specified or supplemented below:

Power supply 480-volt, 3-phase, 60-hertz
Horsepower 20
Speed, maximum 4,535 RPM
Enclosure TEFC
Service factor 1.15

2. Drive: Belt.

3. Noise control:
a. Sound pressure levels radiated from equipment furnished shall not exceed 78 dBA (mean, A-weighted) at 3 feet (RE 2 x 10-5 N/m2) for free field condition when unit is in operation at rated flow.

4. Vibration:
a. Maximum acceptable peak vibration velocity (unfiltered) for blower equipment is 0.45 inches per second.

5. Provide instrumentation, and alarms as indicated on the P&ID Drawings and as specified in Sections 17100 - Control Strategies and 17101 - Specific Control Strategies.

D. System operation: System operation shall be as specified in Sections 17100 - Control Strategies and 17101 - Specific Control Strategies.

Rotary-Lobe Blowers
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2.02 AERATION BLOWERS
A. Manufacturers: One of the following or equal:

1. Kaeser Compressors, Com-paK Series.

2. Aerzen.

3. FPZ, Inc., MS Series.

2.03 MATERIALS
A. General:

1. Aeration blower assembly: Complete with blower, drive, inlet and discharge silencers, valves, and appurtenances.

2. Blower rating: As specified above.

3. Rotation direction of blower shall match requirements of piping.

B. Blower and drive:

1. General:
a. Blower shall deliver oil-free air.
b. Blower and motor mounting: On common base.
c. Lifting provisions: Lifting eyes on blowers, motors, and base so each major component or entire unit can be lifted.
d. Piping connections: 125 pound class flanges in accordance with ASME B16.1.

2. Type: Positive displacement rotary blowers using 2 impellers to pressurize a trapped volume of air at a controlled rate prior to exposing it to a discharge pressure.

3. Casing and head plates:
a. Blower casing: 1 piece with separate head plates and end covers. b. Casing and head plates: Made of close-grained, machined cast iron. c. End covers and head plates: Reinforced with bosses at penetrations with cast, machined support feet.

4. Impellers:
a. Material: Ductile iron or cast iron.
b. Design: Straight, 3-lobe, involute type.
c. Balance: Dynamically, by removing metal from impeller body. d. Operation: Free of rubbing without need for liquid seals or lubrication. e. Timing: positively by a pair of accurately machined, heat-treated, alloy steel timing gears.
f. Shafts: Alloy steel forgings, pressed into each end of each impeller and pinned.
g. Impeller assembly support: Anti-friction type bearings, sized for a minimum ABMA 9 and 11 L10 life for bearings of 100,000 hours.

5. Lubrication:
a. Positive oil seal: Provided at each bearing.
b. Seal design: Capable of preventing lubricant from leaking into air stream. c. Vent provisions: Capable of venting impeller side of oil seal to atmosphere while eliminating possible carryover of lubricant into air stream. d. Drive-end bearings: Grease or oil lubricated.
e. Timing gears and gear-end bearings: Splash oil lubricated. f. Blower’s shipment: With openings sealed after injection of rust inhibitor.

Rotary-Lobe Blowers
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2.04 APPURTENANCES
A. Inlet filter shall have front access for filter element access. Filter shall provide 99 percent removed efficiency of 5 micron particle size and larger.

B. Silencers:

1. Manufacturers: The following or equal:
a. Burgess-Manning, Model BMSI, BMSS, or equal.

2. Construction: Welded steel.

3. Discharge silencer: Furnished with copper wool absorption material and shall have connections for a pressure relief valve, pressure gauge, temperature gauge, and drain.

4. Silencers sizing: For design conditions and specifically designed for use with positive displacement blowers, size as indicated on the Drawings unless a larger size is recommended by the manufacturer.

5. Mounting of silencers: As indicated on the Drawings.

6. Noise attenuation of silencers shall as a minimum, meet the following:

Octave Band Center Frequency, hertz Attenuation, dBA
63 12
125 20
250 27
500 30
1,000 31
2,000 29
4,000 25
8,000 21
C. Acoustic enclosure:

1. Galvanized sheet-metal sandwich construction.

2. With noise attenuating walls and with ventilation openings ported, ducted, shielded, and lined with acoustic absorptive material as required to achieve specified noise levels.

3. Design criteria:
a. Seismic design criteria: As specified in Section 01850 - Design Criteria. b. Wind design criteria: As specified in Section 01850 - Design Criteria.

4. Raintight and dusttight, suitable for outdoor unprotected installation.

5. With ventilation system designed for not more than 15 degrees Fahrenheit air temperature rise with aeration blower operating at maximum load.

6. With fan interlocked with blower motor to start when blower starts and to stop with an adjustable time delay after the blower motor stops.

7. With a weather-protected ventilation air intake filter:
a. Of disposable, dry type, pleated lofted cotton and polyester fiber media construction, securely bonded to a welded galvanized wire backing, with a frame of heavy-duty paperboard.
b. Sized for not more than 400 feet per minute face velocity.

Rotary-Lobe Blowers
11376A-6 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11376A (BidSetFinal) c. With ASHRAE Standard 52.1 cleaning efficiency of not less than 25 percent.
d. With thickness not less than 1 inches.
e. With an easily visible and resettable "replace filter" indicator with retained indication independent of blower on/off status.

8. With removable access panels located for maintenance and inspection access to the housed equipment, each weighing not more than 40 pounds, or hinged if weight exceeds 40 pounds.

D. Relief valve: High-capacity, full-nozzle type; 2 inch minimum valve inlet:

1. Manufacturers: The following or equal:
a. Kunkle Valve Co.

E. Butterfly valves:

1. Constructed as specified in Sections 13446 - Manual Actuators.

2. Lined with 10 mils of epoxy suitable for temperatures to 350 degrees Fahrenheit.

3. Sealed with seals suitable for temperatures of 350 degrees Fahrenheit.

F. Check valves: No. 8808-GAX-SSF; dual disc, wafer style with torsion spring induced closure:

1. Manufacturers: The following or equal:
a. Val-Matic.

2. Consisting of following components:
a. Valve body: ASTM A126 cast iron.
b. Disc: ASTM B148-9A, aluminum bronze.
c. Spring: ASTM A276, Type 316 stainless steel.
d. Pins and thrust bearings: ASTM A276 Type 316, stainless steel. e. Seals, rated for minimum 350 degrees Fahrenheit.

G. Pressure gauges:

1. Provide one gauge for the discharge side of each blower and one for the discharge header.

2. Manufacturers: One of the following or equal:
a. Ashcroft:
1) Maximum pressure less than 10 pounds per square inch:

Model 1188.
2) Maximum pressure greater or equal to 10 pounds per square inch:

Model 1279.
b. Wika.
c. Ametek.

3. Accuracy: Grade 2A, as defined by ASME B40.100.

4. Where the maximum pressure is less than 10 pounds per square inch, provide socket and bellows; for all other pressure ranges, employ a Bourdon® tube.

5. Liquid filled case with minimum 4 1/2 inch dial face.

6. Type on discharge side of blower: Pressure gauge calibrated in pounds per square inch gauge.

7. A suitable tee handled corporation stop or ball valve and snubber shall be installed between each gauge and connection to air piping.

Rotary-Lobe Blowers
11376A-7 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11376A (BidSetFinal) H. Pressure switches:

1. Provide one differential pressure switch for each inlet filter, one direct switch for the discharge side of each blower, and one direct switch for the discharge header.

2. Manufacturers: One of the following or equal:
a. Ashcroft, N series.
b. United Electric, Series One.

3. Accuracy: Within 1.0 percent of range.

4. Overpressure:
a. Minimum 130 percent of maximum range pressure without damage to switch or sensing element.
b. Minimum 400 percent of nominal range without leakage or rupture.

5. Relay outputs: 2 Form C contacts.

I. Pressure transmitters:

1. Provide on pressure sensor/transmitter for the discharge side of each blower.

2. Manufacturers: One of the following or equal:
a. Emerson, Rosemount 3051 Series.
b. Yokogawa, EJA Series.
c. Endress & Hauser, Cerebar S Series.

3. Maximum ratio of total instrument range to calibrated span: 10 to 1.

4. Accuracy:
a. Reference accuracy: Plus or minus 0.075 percent of calibrated span, including effects of hysteresis, nonlinearity, and repeatability. b. Total performance accuracy: Plus or minus 0.30 percent of calibrated span, including reference accuracy effects, static pressure and ambient temperature effects.

5. Stability: Plus or minus 0.15 percent of upper range limit over 5 years.

6. Power supply: 24 VDC - 2 wire loop powered.

7. Outputs: 4 – 20 mA.

J. Other safety devices and controls: As recommended by blower manufacturer.

K. Rubber expansion joints:

1. Provided at inlet and discharge flanges of blowers.

2. Suitable for pressures up to 15 pounds per square inch gauge and temperature up to 350 degrees Fahrenheit.

3. At discharge joints, provided with control rods to restrict axial pipe movement.

4. Manufacturers: The following or equal:
a. General Rubber.

L. Discharge piping and silencer insulation: As specified in Section 15082 - Piping Insulation, and as indicated on the Drawings. Insulation inside acoustic enclosure by blower manufacturer.

M. Supports and bracing: As required to support blower, associated equipment and piping, and to prevent excessive or harmful vibration or movement of equipment or piping.

Rotary-Lobe Blowers
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2.05 SPARE PARTS AND SPECIAL TOOLS
A. Spare parts: Provide the following:

1. 1 complete set of bearings.

2. 4 complete sets of ventilation and air intake filters.

3. 4 lubrication oil filter cartridges.

4. 2 complete sets of gaskets and o-rings.

5. 2 sets of drive belts:
a. Label spare parts as specified in Section 01600 - Product Requirements and box for storage.

B. Special tools: Provide the following:

1. 1 set of special tools with equipment when required for normal operation and maintenance.

PART 3 EXECUTION

3.01 INSTALLATION
A. Install adequate supports and bracing to support blower, associated equipment and piping, and to prevent excessive or harmful vibration or movement of equipment or piping resulting from operation of the system.

B. Mount blower on base plate: Properly align and grout base plate as required for blower and base for electric motor with sliding rails.

C. Secure silencers with hold-down bolts.

3.02 COMMISSIONING
A. As specified in Section 01756 - Commissioning, 15958 - Mechanical Equipment Testing, 11802 - Packaged Water Treatment System Rehabilitation, and this Section.

B. Manufacturer services:

1. Provide certificates:
a. Manufacturer’s Certificate of Source Testing.
b. Manufacturer’s Certificate of Installation and Functionality Compliance.

2. Manufacturer’s Representative onsite requirements:
a. Installation: 1 trip, 2-day minimum.
b. Functional Testing: 2 trips, 1-day minimum each.

3. Training:
a. Maintenance: 4 hours per session, 2 sessions.
b. Operation: 2 hours per session, 2 sessions.

4. Process operational period:
a. As required by Owner or Contractor.

Rotary-Lobe Blowers
11376A-9 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11376A (BidSetFinal) C. Source testing:

1. Test as specified in Section 15958 - Mechanical Equipment Testing.

2. Blower:
a. Test witnessing: Not witnessed.
b. Conduct Level 1 General Equipment Performance Test.
c. Conduct Level 1 Vibration Test.
d. Conduct Level 1 Noise Test.

3. Electrical and Controls:
a. Conduct testing as specified in Section 17950 - Commissioning for Instrumentation and Controls.

D. Functional testing:

1. Electrical and Controls:
a. Conduct testing as specified in Section 17950 - Commissioning for Instrumentation and Controls.

2. Rotary Lobe Blower System:
a. Test witnessing: Witnessed.
b. Conduct Level 2 General Equipment Performance Test.
c. Conduct Level 2 Vibration Test.
d. Conduct Level 2 Noise Test.

END OF SECTION

Packaged Water Treatment System Rehabilitation
11802-1 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (BidSetFinal) SECTION 11802

PACKAGED WATER TREATMENT SYSTEM REHABILITATION
PART 1 GENERAL

1.01 SUMMARY
A. Section includes: Provisions for rehabilitation of four (4) existing packaged water treatment system units. The existing units are Microfloc Trident Model TR-840A Water Treatment units as manufactured by WesTech Engineering, Inc.

B. The Contractor shall assign responsibility of these units to WesTech Engineering, Inc., herein referred to as the manufacturer.

1. The Contractor shall provide all labor, materials, equipment, and incidentals as shown, specified and required to refurbish, install, and test (if applicable) the treatment equipment, to be supplied by the specified manufacturer, complete with piping, internals and appurtenances.

2. The specified manufacturer shall assist in the installation of all required equipment, including all instrumentation and controls connections, in order to provide a complete and operational system. Any electrical and wiring components shall be provided and installed by the Contractor unless otherwise specified.

1.02 SUBMITTALS
A. Submit as specified in Section 01330 - Submittal Procedures.

B. Product data:

1. As specified in Section 15050 - Common Work Results for Mechanical Equipment.

C. Shop drawings: As specified in Section 15050 - Common Work Results for Mechanical Equipment:

1. Approval Drawings: Submit six sets for approval of the following:
a. Shop drawings showing plan, elevation and sectional views/materials of construction, tank reinforcing, and electrical and piping connections. b. Materials list of items proposed to be provided under this Section. c. Manufacturer's literature and catalog cuts of purchased items. d. Manufacturer’s specifications and other data needed to prove compliance with the specified requirements.
e. Manufacturer’s installation instructions and diagrams. f. Control panel wiring schematics and layouts:
1) Scaled exterior front and side elevations with dimensional information.
2) Scaled interior panel layout showing all components coordinated with the bill of materials.
3) Bill of materials with detailed description of components. 4) Wiring schematics including wire numbers and terminal numbers.

Packaged Water Treatment System Rehabilitation
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6) Control wiring, control logic, and instrumentation.
g. Paint System.
h. ANAB-accredited ISO 9001 quality system certification.

D. Calculations: As specified in Section15050 - Common Work Results for Mechanical Equipment.

1. Thermal management calculations for each control panel.

E. Vendor installation, operation and maintenance manuals: As specified in Section 01782 - Operation and Maintenance Manuals.

1. This information shall be provided to the Contractor and Engineer at least two weeks prior to the shipment of the equipment.

2. Submit three copies in electronic format and three copies in hard copy format, each including the following:
a. Complete manufacturer's installation instructions with detailed installation drawings.
b. Complete manufacturer's operational instructions.
c. Complete manufacturer's maintenance instructions with complete catalog information, electric motor information, parts list, recommended spare parts list and instructions for periodic maintenance of the treatment unit.

F. Commissioning submittals:

1. Provide Manufacturer’s Certificate of Source Testing as specified in Section 01756 - Commissioning.

2. Provide Manufacturer’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

1.03 WARRANTY
A. Provide warranty as specified in Section 01783 - Warranties and Bonds.

1.04 PRODUCT DELIVERY, STORAGE AND HANDLING
A. Comply with the pertinent provisions of the delivery schedule.

B. Equipment and materials to be shipped F.O.B. shipping points, with freight prepaid to the jobsite. Fabricated parts when delivered to the site shall be stored off the ground and protected from weather and damage. Control and electrical devices shall be stored indoors.

C. Ship fabricated assemblies in largest sections permitted by carrier regulations.

Match-mark all sections for ease of field installation.

D. Handle so as to prevent damage to equipment during handling and transportation.

E. Equipment supplied under this section shall not be delivered to the site until construction has progressed to the point where installation may properly commence.

Packaged Water Treatment System Rehabilitation
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2.01 GENERAL
A. The following items, most of which are supplied by the specified manufacturer, some of which are provided by the Contractor, describe the elements required to ensure a properly designed and integrated water treatment system:

1. Modify existing factory built steel tanks as indicated on the Drawings, including the following:
a. Repair, replacement, and/or addition of structural support components. b. Addition of an air grid connection.
c. These modifications to be done when the internals are removed and prior to repairing, sandblasting, and re-painting the tankage.

2. Refurbishing/repair/replace various ancillaries of the factory built steel modular tanks, including but not limited to:
a. Clarifier section:
1) Removing and cleaning existing media retaining screens and buoyant media.
2) Removing, inspecting, repairing, replacing influent distribution header and lateral assembly.
3) Replacing with new air distribution header and lateral assembly to updated versions.
4) Updating media to mixed media.
5) Replacing pressure switch assembly and/or add pressure transducer. b. Filter section:
1) Removing surface wash system.
2) Removing existing media, gravel support, and underdrain. 3) Removing and reusing tubular underdrains.
4) Replacing media and gravel support.
5) Incorporating an air grid, tank connection, air check, and control valve.
6) Replacing automatic process valves and/or actuators. 7) Replace headloss-pressure switch assembly and/or add pressure transducer.
8) Replace existing filter level with radar level control. c. Air blowers:
1) Contractor shall replace air wash blowers as indicated on the Drawings and as specified in Section 11376A - Rotary-Lobe Blowers.

Blowers shall be provided by packaged water treatment supplier. d. Control panel:
1) Remove and replace existing vendor control panel (VCP). 2) Installing new vendor control panel.
3) Providing all new conduit to valves and instruments from new control panel.
4) Incorporating enhanced chemical feed control.
e. Backwash supply system:
1) Replace and install new backwash supply valves with electric valve actuators for each unit.
f. Chemical feed:
1) Replace and update the chemical treatment for remote control from the VCP PLC.

Packaged Water Treatment System Rehabilitation
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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (BidSetFinal) B. Painting:

1. The contractor shall be responsible for coating the filter tank interior and complete treatment unit (filter tank and adsorption clarifier tank) exterior tankage surface and as specified in Section 09960 - High-Performance Coatings.
a. Surface defects repaired and any tank modifications required shall be completed as suggested by the manufacturer. The surface shall then be prepared by a method defined in Section 09960 - High-Performance Coatings.
b. All coatings shall be NSF 61 approved.

C. Technical Services: Training shall be provided to the operators for the purpose of review and understanding of any updates or modifications that have been made during the refurbishment.

1. A competent technical service representative from the manufacturer shall be provided to instruct the Owner’s personnel in the operation and maintenance of the equipment. The time listed below includes only on-site time. No travel time should be considered as part of the required training time. Comply with the requirements of Section 01756 - Commissioning.

2. Instruction during modifications to the existing water treatment units shall happen as described in the table in Section 3.02.K. Instruction and observation shall be included for the following:
a. Underdrain placement and clarifier influent and air assemblies of the first unit rehabilitated.
b. Equipment inspection, media placement, start-up and Owner training for the first unit rehabilitated.
c. Calibration of replaced or updated valves, flow meters and or pressure switches.
d. Calibration of existing or newly supplied instrumentation. e. Equipment inspection and start-up of the second unit rehabilitated. f. The minimum days specified above do not relieve the system manufacturer of providing sufficient service to place the system in satisfactory operation.
g. Advise and adjust chemical feed equipment to optimize process to include optimal clarifier and filter run times.

D. Use adequate numbers of skilled workers who are thoroughly trained and experienced in the necessary crafts and who are completely familiar with the specified requirements and the methods needed for proper performance of the work of this Section.

E. The water system manufacturer shall coordinate all activities, design, installation, and operation with all other suppliers of related equipment to ensure that the final water treatment system is properly designed and functions correctly.

Packaged Water Treatment System Rehabilitation
11802-5 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (BidSetFinal) F. Teardown/repaint/refurbish 4 tanks with Adsorption Clarifier section and integral filter, each capable of 1,400 GPM. The following pre-engineered treatment system reflects the equipment already existing on site:

Nominal Tank Surface Area/Tank (sq.ft.)
Model No. Capacity (GPM) Clarifiers Filters
TR-840A 1400 140 280

2.02 WATER TREATMENT FILTER UNIT REHABILITATION
A. Adsorption Clarifier Section:

1. The contractor shall refurbish/repair 4 Adsorption Clarifier section(s) as shown on the contract drawings.
a. The adsorption media retention hold-down beams, fasteners, gaskets and retaining screens shall be removed to gain access to the internal. b. Beams shall be recoated as set forth in this section and set aside. c. The media retaining screen and grating assemblies shall be cleaned by power washer.
d. All gasket surfaces cleaned and free of old adhesive, sealants, and glues. e. The media hold down fasteners shall be cleaned for reuse or replace if the threads or material has been corroded or damaged.

2. The adsorption media can be removed or floated to the filter section while clarifier repairs/refurbishments are conducted.

3. The raw water inlet header shall be removed, cleaned, and inspected for damage. Any damage shall be repaired by replacing with new material or replacement of complete assembly. All stainless steel fasteners showing signs of corrosion or damage shall be replaced with new 18-8 SS/304 SS fasteners.

4. All inlet air piping shall be removed and replaced after system coating. Any Flow-EZ type air nozzles shall be replaced with new media retaining, non-clog air diffusers consisting of a slotted plastic nozzle body consisting of six slot,

0.040 inch slot size, ABS-SST material.

5. All couplings for the influent water and air headers to be fitted with new gaskets/seals.

6. For complete repair/repainting of the interior clarifier, see section regarding interior finish coating.

7. All openings and threaded areas shall be protected from epoxy coating.

8. For spot repairs: All painted mounting surfaces that show signs of rust or damage shall be sandblasted, cleaned, dried and prepared for repainting per section regarding interior finish coating.

9. A bottom media retention screen with stainless steel screen support shall be provided to prohibit mixed media from entering and coalescing with the influent and air piping. The adsorption media retention screen shall be a corrosion resistant assembly that allows free passage of water but contains the adsorption media particles.

10. A 24-inch depth of fiber ball media shall be provided. Media shall be neutrally buoyant with specific gravity of approximately 1.0. Half of the buoyant media that currently is in use shall be reused and set aside during rehabilitation. This existing material is manufactured of recycled HDPE beads. At least one-half of the beads in the bed shall be rolled to produce an elliptical shape and shall also be scarified to place a groove on the media surface. The rolled and

Packaged Water Treatment System Rehabilitation
11802-6 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (BidSetFinal) scarified shape provides improved floc retention inside of the clarifier bed.

Media that does not include the rolled and scarified design is not acceptable due to its lower capability of floc retention.

11. A stainless steel grating assembly shall sit above the air scour system near the bottom of the ADSORPTION CLARIFIER unit. The grating allows for free passage of water but contains the adsorption media particles.

12. Splash guards shall outline the perimeter of the ADSORPTION CLARIFIER system to prevent water from burping over the edge during the flushing process.

13. Once the AC Media is installed, new adhesive seal shall be installed for the media retaining screen and on the screens as described in the Owners’ Manual. Media hold down beams replaced and torqued per specifications.

14. The clarifier check valve shall be replaced, or the seals shall be replaced with new.

B. Filter Section:

1. The floats, level controller, and other instrumentation as required shall be removed.

2. The surface wash sweep(s) and pipework shall be removed from the washtrough.

3. The coupling in the washtrough shall be plugged.

4. The filter media shall be removed as well as any support gravel.

5. The filter underdrain shall be removed.

6. The tank shall be modified with the required tank connection to allow for an air flow into the in-bed air wash grid.

7. The interior shall be cleaned, inspected, repaired or modified as shown on the drawings prior to sandblasting and repainted as noted per the interior finish coating specification.

8. All required supports shall be properly welded and/or installed into the tank(s) as required proper installation. Additional structural supports may be required to be welded to the tank walls to provide stiffening.

9. Effluent piping shall be cleaned prior to installing the new underdrain to ensure no debris in present that could cause damage to the new underdrain during a backwash process.

10. The following procedure will be followed for installation of the underdrain assembly:
a. In-Bed Air Wash Grid:
1) The contractor shall install the in-bed air wash grid in the filter section per the manufacturer’s requirement.
2) The gravel support layers shall be installed per the required configuration.
3) The contractor shall install the in-bed air wash grid assembly into the filter section. The grid shall consist of a main air header pipe with laterals. The header will be flanged on one end and capped on the other end. The laterals shall have cut slots perpendicular to the length of the pipe and in predetermined sections along the length of the lateral pipes. The in-bed air wash assembly shall be placed at the interface of the gravel support and filter media. The assembly shall be supported with the required supports and hardware to ensure the header pipe and laterals are secure and allow air flow into the underdrain system for the filter backwash process.

Packaged Water Treatment System Rehabilitation
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11. Replacing filter media per specifications below:
a. Filter mixed media:
1) The filter media shall be a 30 inch deep mixed media separation bed composed of three materials, each of different size and specific gravity, providing uniform void distribution from coarse to fine in the direction of flow. The mixed media shall consist of the following as noted in the original equipment bills of material:
a) 18 inches of anthracite coal, MS-4, 1.0–1.1 mm ES, <1.7 SG. b) 9 inches of silica sand, MS-18, 0.35–0.45 mm ES, <1.4 SG. c) 3 inches of high-density sand, MS-21, 0.20-0.32 mm ES, <1.7 SG.
2) The filter media shall be supplied by the manufacturer and shall be shipped in bags for ease of installation.

2.03 PLANT PROCESS VALVES-ELECTRIC
A. Refer to Section 13447 for all process control valves in the sizes shown on the drawings.

B. The existing valves and actuators for influent, Adsorption Clarifier air scour, filter effluent, filter-to-waste, backwash and air assisted backwash shall be replaced with new seal kits and replacement actuators.

C. One automatic high-rate valve, one manual high-rate valve, and one manual low-rate valve is provided for backwash flow control. These valves are common to all tanks.

D. The automatic valves with motor actuator shall be provided for process valves.

Valves 1-1/2-inch and smaller shall be ball type with bronze body, brass ball, and Teflon * seats. Valves 2-inch and larger shall be wafer butterfly valves with nylon coated ductile iron disc, EPDM seat, 416SS stem and cast-iron body.

E. Motor actuators shall have 480VAC, 60 Hz supply. NEMA 4 enclosure.

F. All electric operated valves will maintain position upon loss of power.

G. A manual wafer-type butterfly valve, complete with handwheel operator, shall be provided for backwash rate setting.

H. New valves with electric motor actuators shall be provided for influent, effluent, filter to waste, Adsorption Clarifier air scour, filter air scour, and backwash inlet.

2.04 PROCESS AND CONTROL EQUIPMENT
A. Filter Level Transmitter:

1. Utilize the existing level sensor and transmitter selectively demolished from each filter unit.

B. Clarifier Headloss Transmitter and Switch:

1. Utilize the existing pressure indicating elements, transmitters, gauges, and switches selectively demolished from each filter unit.

Packaged Water Treatment System Rehabilitation
11802-8 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (BidSetFinal) C. Filter Headloss Transmitter:

1. Utilize the existing pressure indicating sensor, transmitter, and gauge selectively demolished from each filter unit.

D. Filter Backwash Switches:

1. Provide two (2) new float level switches per filter (8 total) for backwash control.

2.05 PLANT BLOWER(S) - REPLACEMENT
A. Refer to Section 11376A - Rotary Lobe Blowers for all blowers shown in drawings.

B. The treatment plant manufacturer shall supply blowers, to provide an air flow capacity for aiding in the cleaning of the Adsorption Clarifier and Filter sections during flushing and backwashing.

C. Air flow capacity for the Adsorption Clarifier flush process shall be 475 scfm at 5 psi and 950 scfm at 5 psi for the filter backwash process.

D. The blower(s) shall be positive displacement (PD) type with a Tri-Lobe design.

E. Each blower shall be provided with an inlet filter, pressure relief valve and dirty filter indicator.

2.06 REPLACEMENT VENDOR CONTROL PANEL (VCP)
A. General:

1. Vendor control panel components and construction shall be as specified in Section 17710 - Control Systems: Panels, Enclosures, and Panel Components.

2. Provide components and equipment with UL 508 listing.

3. Provide control panels with UL 508A labeled.

4. Provide intrinsically safe circuits and equipment in accordance with UL698A.

5. VCP shall be programmed, wired, and factory tested for proper operation prior to shipment.
a. Factory-assemble and wire the control panel such that field wiring only requires connections to terminals.
b. Additional testing requirements as specified in Section 17950 - Commissioning for Instrumentation and Controls.

6. Provide surge protection on the incoming power feed.

7. Provide necessary control hardware, software, and components as required for a fully functional and operational installation.

8. Provide heating, cooling, and dehumidifying equipment to maintain instrumentation and control devices within their rated operational temperature range.

9. Power supply: 120 VAC, 1-phase 60 Hz.

B. Enclosures and panel components:

1. Manufacturers: One of the following or equal:
a. nVent/Hoffman.
b. Saginaw Control & Engineering.

Packaged Water Treatment System Rehabilitation
11802-9 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (BidSetFinal)

2. Panel shall be rated as follows, unless otherwise specified:
a. Indoor panels:
1) Electrical/control rooms: NEMA 12, powder coated mild steel. 2) Process floor: NEMA 4X:
a) Non-Corrosive Areas: Type 316 stainless steel.
b) Corrosive Areas: Polycarbonate.

3. Programmable logic controller (PLC):
a. Manufacturers:
1) Allen-Bradley:
a) CompactLogix 5380, 5069-L3 Series.
b. As specified in Section 17720 - Control Systems: Programmable Logic Controllers.
c. Provide PLC programming software system from same manufacturer as the PLC hardware manufacturer.
d. PLC Power Supply:
1) Voltage: 120 VAC.
e. I/O Modules:
1) Provide external fuses mounted on the field connection terminal block for discrete input, discrete output, and analog input I/O points. 2) Discrete modules:
a) Voltage: 120 VAC.
3) Individually isolated points are required.

4. Local operator interface (LOI):
a. As specified in Section 17721 - Local Operator Interface (LOI). b. Manufacturers: The following, no equal:
1) Allen-Bradley:
a) PanelView Plus 7.
c. General:
1) Provide the LOI graphic software system manufactured by the LOI hardware manufacturer.
2) NEMA rating shall match enclosure rating.
3) Capable of stand-alone operation in conjunction with 1 PLC. 4) Communications protocol:
a) EtherNet/IP.
5) Touchscreen operator input.
d. Display:
1) Type: TFT color.
2) Standard aspect ratio:
a) Screen size: 10-inch.

5. Network materials and equipment:
a. As specified in Section 17733 - Control Systems: Network Materials and Equipment.
1) Ethernet switches:
a) Manufacturers: The following, no equal:
(1) Allen-Bradley Stratix.
(2) Cisco.
(3) Hirschmann.
(4) N-Tron.
b) Properties:
(1) Hardware:
(a) 100/1000 BASE-FX.

Packaged Water Treatment System Rehabilitation
11802-10 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (BidSetFinal) (b) 10/100/1000 BASE-TX.
(c) No fans or moving parts.
(2) Environment:
(a) Operating temperature range: 32 to 140 degrees
Fahrenheit.
(b) Humidity: 5 to 95 percent, non-condensing.
(3) Provide Ethernet switch capable of performing basic switching without special programming or configurations. (4) Connector type:
(a) Fiber: SFP.
(b) Copper: RJ-45.
(5) Mounting:
(a) DIN Rail.

6. Provide 120 VAC to 24 VDC (or other voltages as required) power supply arrangement that is configured with several modules to supply adequate power in the event of a single module failure in either a 1+1 or N+1 configuration as required:
a. Provide automatic switchover upon module failure.
b. Alarm contacts monitored by the PLC.
c. Design power supplies so the either the primary or backup supply can be removed, repaired, and returned to service without disrupting the system operation.

7. Provide GFCI duplex 120 VAC convenience receptacle.

8. Provide NEC Class 2 power to devices requiring NEC Class 2 or SELV supply power.

9. Pilot devices:
a. Controls:
1) Power ON-OFF switch.
b. Lights:
1) Power ON-OFF indicator.

2.07 CONTROL STRATEGY
A. General:

1. Provide signals over network communication protocol as indicated on the Drawings.
a. Plant PLC monitoring I/O shall be over the network connection.

2. Coordinate signal transfer with Programmer at programming meetings as specified in Section 17050 - Common Work Results for Process Control and Instrumentation Systems.

3. Provide access to control parameters and settings.

4. PCS shall only have visibility to Vendor’s PLC. No other vendor furnished Ethernet devices shall be visible to the PCS.

5. Provide security lock out capability for vital settings and functions.

6. Provide real time clock within the PLC to select and initiate unit start times. a. Include programming functions for syncing the PLC clock with the plant network time server.

7. Refer to and coordinate with Section 17101 - Specific Control Strategies and Digital I/O Tables provided in the Contract Drawings.

Packaged Water Treatment System Rehabilitation
11802-11 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (BidSetFinal) B. Common control functions:

1. Alarms:
a. Generate alarms within the PLC logic.
b. Indicate alarms at the LOI. Enable acknowledgement from either the PCS or the LOI.
c. Use interlocks and proving timers to prevent alarms from operating due to power loss, except for loss of power alarms.

2. Analog magnitude checking:
a. Provide clamps to prevent operator-entered values (setpoints, etc.) that fall outside acceptable limits.

3. I/O filtering and processing:
1) Monitor analog input signal quality:
a) Generate alarms for over or under range inputs.

4. Display the current status of operator selections (HAND/AUTO, START/STOP, etc.) on the LOI and send those signals to the Plant Control System (PCS) for display on HMI screens.

5. PLC status:
a. Provide an LOI screen that depicts the status of the enclosure, including but not limited to the following:
1) PLC cabinet over-temperatures from high temperature switch. 2) Intrusion status on enclosures equipped with intrusion switches. 3) AC power failure.
4) DC power supply failure.

6. PLC system communication status:
a. Provide a minimum of 1 screen to display communication errors and status within the control system network and generate alarms for:
1) Communication with Plant PLC.

C. Control system requirements as specified in Sections 17100 - Control Strategies and 17101 - Specific Control Strategies.

D. Provide complete program in electronic format, unlocked, via USB drive.

2.08 SPECIFIC CONTROL STRATEGY:

A. Normal operation:

1. Provide logic to run all clarification and filtration operations automatically.

B. Absorption Clarifier Backwashing:

1. The control system shall provide means for automatically initiating a flush cycle for each Adsorption Clarifier section by a timeclock or preset adjustable clarifier headloss pressure switch.

2. An interlock shall be provided so that only one unit can be flushed at a time.

3. A selector switch shall provide override of the automatic flush initiation to allow manual flushing of each unit.

4. During the flush cycle, collected solids shall be removed by proper sequencing of valves and the blower.

5. Return to service shall be automatic.

Packaged Water Treatment System Rehabilitation
11802-12 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (BidSetFinal) C. Mixed Media Filter Backwashing and Air Scour:

1. The control system shall provide means for automatically initiating backwash and air scouring of each Mixed Media Filter by a timeclock or a preset filter headloss pressure switch or transmitter.

2. An interlock shall be provided so that only one filter can backwash at a time.

3. A selector touch button shall provide override of the automatic backwash initiation to allow manual backwash of each unit.

4. Flushing of the corresponding Adsorption Clarifier section can be initiated automatically at the PCS.

5. The control system shall automatically sequence valves, blowers, and pumps during the backwash cycle.

6. Return to service shall be automatic.

D. Backwashing Interlocks:

1. On receipt of backwash pump station low level signal from the PCS, the VCP shall prevent backwashing of additional units.

2. On receipt of backwash pump station high level signal from the PCS, the VCP shall stop production of water through all units.

E. Automatic Chemical Control:

1. Coagulant feed shall be controlled by the Aquaritrol logic within the VCP PLC.

The controller shall be capable of automatically changing chemical coagulant by pacing chemical feeder to maintain plant effluent turbidity at an established setpoint.
a. Control inputs shall be from existing turbidimeters and pH monitors. b. Control output to the coagulant feed pump shall be a speed percentage output to the PCS via the EtherNet/IP connection to control the pump stroke (or pump motor speed).

2. Operator interface:
a. The Aquaritrol Program parameters will be accessible through the control panel LOI.

F. Communication with the PCS:

1. The VCP shall receive the following signals from the PCS via the EtherNet/IP connection:
a. All setpoints shall be adjustable from the PCS.
b. Handshake signal.
c. Unit 1 run.
d. Unit 2 run.
e. Unit 3 run.
f. Unit 4 run.
g. Backwash pump station low level.
h. Backwash pump station high level.
i. Blower discharge header flow.
j. Coagulant feed pump 1 running.
k. Coagulant feed pump 2 running.
l. Coagulant feed pump 3 running.

2. The VCP shall send the following signals to the PCS via the EtherNet/IP connection:
a. Handshake signal.
b. Unit 1 ready.

Packaged Water Treatment System Rehabilitation
11802-13 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (BidSetFinal) c. Unit 1 in semi-auto mode.
d. Unit 1 in auto mode.
e. Unit 1 mode status.
f. Unit 2 ready.
g. Unit 2 in semi-auto mode.
h. Unit 2 in auto mode.
i. Unit 2 mode status.
j. Unit 3 ready.
k. Unit 3 in semi-auto mode.
l. Unit 3 in auto mode.
m. Unit 3 mode status.
n. Unit 4 ready.
o. Unit 4 in semi-auto mode.
p. Unit 4 in auto mode.
q. Unit 4 mode status.
r. Backwash in progress.
s. Flush in progress.
t. Blower 1 in auto mode.
u. Blower 1 running.
v. Blower 1 stopped.
w. Blower 2 in auto mode.
x. Blower 2 running.
y. Blower 2 stopped.
z. Blower 3 in auto mode.
aa. Blower 3 running.
bb. Blower 3 stopped.
cc. Coagulant feed pump 1 speed setpoint.
dd. Coagulant feed pump 2 speed setpoint.
ee. Coagulant feed pump 3 speed setpoint.
ff. Unit 1 influent flow.
gg. Unit 2 influent flow.
hh. Unit 3 influent flow.
ii. Unit 4 influent flow.
jj. Unit 1 influent valve in auto.
kk. Unit 1 influent valve mode.
ll. Unit 1 effluent valve in auto.
mm. Unit 1 effluent valve mode.
nn. Unit 1 air valve in auto.
oo. Unit 1 air valve mode.
pp. Unit 1 air scour valve in auto.
qq. Unit 1 air scour valve mode.
rr. Unit 1 backwash valve in auto.
ss. Unit 1 backwash valve mode.
tt. Unit 1 waste gate valve in auto.
uu. Unit 1 waste gate valve mode.
vv. Unit 2 influent valve in auto.
ww. Unit 2 influent valve mode.
xx. Unit 2 effluent valve in auto.
yy. Unit 2 effluent valve mode.
zz. Unit 2 air valve in auto.
aaa. Unit 2 air valve mode.

Packaged Water Treatment System Rehabilitation
11802-14 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (BidSetFinal) bbb. Unit 2 air scour valve in auto.
ccc. Unit 2 air scour valve mode.
ddd. Unit 2 backwash valve in auto.
eee. Unit 2 backwash valve mode.
fff. Unit 2 waste gate valve in auto.
ggg. Unit 2 waste gate valve mode.
hhh. Unit 3 influent valve in auto.
iii. Unit 3 influent valve mode.
jjj. Unit 3 effluent valve in auto.
kkk. Unit 3 effluent valve mode.
lll. Unit 3 air valve in auto.
mmm. Unit 3 air valve mode.
nnn. Unit 3 air scour valve in auto.
ooo. Unit 3 air scour valve mode.
ppp. Unit 3 backwash valve in auto.
qqq. Unit 3 backwash valve mode.
rrr. Unit 3 waste gate valve in auto.
sss. Unit 3 waste gate valve mode.
ttt. Unit 4 influent valve in auto.
uuu. Unit 4 influent valve mode.
vvv. Unit 4 effluent valve in auto.
www. Unit 4 effluent valve mode.
xxx. Unit 4 air valve in auto.
yyy. Unit 4 air valve mode.
zzz. Unit 4 air scour valve in auto.
aaaa. Unit 4 air scour valve mode.
bbbb. Unit 4 backwash valve in auto.
cccc. Unit 4 backwash valve mode.
dddd. Unit 4 waste gate valve in auto.
eeee. Unit 4 waste gate valve mode.

2.09 CHEMICAL MIXING AND FEED SYSTEMS
A. Refer to Section 11242 - Liquid Chemical Diaphragm - Type Metering Pumps.

B. Chemical feed pumps electronically controlled by the Aquaritrol PLC Program.

NOTE: Tank and mixer for liquid chemical feed system to be provided by others.

2.10 FINISH
A. Oil, grease, dirt, rust, mill scale, and foreign matter shall be removed from the interior tankage surface by a method defined by the Steel Structures Painting Council (SSPC Spec-latest revision). Tankage interior shall receive at the factory, one coat Tnemec N140-1255 primer, or equivalent, followed by one coat of Tnemec N140-15BL, or equal. The tank exterior, except the bottom, shall be painted with one coat of Tnemec N140-1255 primer, or equal. Field finish painting shall be by the contractor. Tank bottom shall be bare, for the field placement onto a coal tar or asphaltic base mastic compound to be provided and installed on the equipment base pad by the Contractor.

Packaged Water Treatment System Rehabilitation
11802-15 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (BidSetFinal)

2.11 SPARE PARTS
A. If needed, insert required spare parts for the project. This could include but not limited to, AC retaining screen gaskets, anthracite filter media, valves and actuators, instrumentation, control panel components, touch-up paint, etc.

B. If the PLC hardware provided for the VCP and local control panels are not the same type as the Plant’s PLC system hardware, provide the following spare PLC hardware for the PLC equipment in the VCPs and LCPs.

1. 1 spare CPU for every type of CPU in the system, with programming files preloaded.

2. 1 spare network and/or communications card for every network or communications card in the system.

PART 3 EXECUTION

3.01 GENERAL REQUIREMENTS
A. Refurbishment of multiple units shall be coordinated with the Owner and Engineer to allow plant to continue to produce water if needed during the refurbishment phase. Refer to specific requirements in Section 01140 - Work Restrictions.

B. Coordination with plant control system and programmer:

1. Coordinate requirements for data transfer with PCS:
a. Include all data registers, data types, and engineering units, etc.

2. Coordinate with the ICSC and programmer for factory testing. Vendor shall supply PLC and LOI programming file prior to the testing.

3. Coordinate signal transfer with Owner at programming meetings as specified in Section 17050 - Common Work Results for Process Control and Instrumentation Systems.

3.02 TECHNICAL SERVICES
A. The field installation shall be approved by the equipment manufacturer's personnel, who is directly employed by the equipment manufacturer, and normally engaged in the field installation of the equipment specified herein.

B. The manufacturer's authorized personnel shall be present during the placement of filter Mixed Media and underdrains to instruct and observe installation for the first unit rehabilitated.

C. The manufacturer shall inspect all equipment in this section prior to start-up to confirm that all equipment is properly installed and working, both individually and as a system.

D. The manufacturer will be responsible for calibration of equipment specified herein.

E. The Manufacturer shall be present during placement of filter Mixed Media that is not pre-installed.

Packaged Water Treatment System Rehabilitation
11802-16 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (BidSetFinal) F. The Manufacturer shall inspect the installation of all equipment in this section prior to start-up in order to verify that the equipment has been properly installed and operates properly as a system and individually.

1. Submit field reports to the Engineer.

2. The field reports should include the following items:
a. Agenda.
b. Contact time.
c. Work completed.

G. The Manufacturer after the equipment has been properly installed shall calibrate the equipment with the Owner’s operator present.

H. The Manufacturer’s representative shall be present for installation assistance described above as listed in the table in Section 3.02.K.

I. After start-up, the Manufacturer shall furnish the service of a competent technical service representative one month after Contractor’s start-up to instruct the Owner’s personnel in the operation and maintenance of the equipment for a three-day period during one trip.

J. Effluent quality laboratory analysis shall be provided by the Owner.

K. Equipment manufacturer is required to provide qualified personnel to assist the Contractor as listed in the following table.

Total
Trips
Total Duration
(Days) Description
1 2 Initial site visit for equipment inventory review
4 10 Mechanical Components; AC, filter air scour grid, and filter media installation inspection and startup
2 6 Instrumentation on-site assistance, inspection, and startup
4 8 Controls on-site assistance, inspection, and startup 1 3 Operator Training

3.03 TESTING AND INITIAL OPERATION
A. Place units in service utilizing services of equipment manufacturer's service personnel.

B. Fill the plant with liquid to test the hydrostatic design.

1. Any failure or excessive deflection shall be remedied.

C. Demonstrate proper installation and operation of all equipment with a 72-hour test.

1. Any failure is to be corrected and the system is to be retested for the specified time period.

2. Licensed operators at the water treatment plant will be responsible for actual operation of the plant.

Packaged Water Treatment System Rehabilitation
11802-17 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (BidSetFinal)

3. The equipment manufacturer's service technician will be available by phone during the entire test and will provide on-site service as needed.

4. All testing, including schedules, etc. will be coordinated with the Owner, Contractor, and Engineer.

3.04 WARRANTY
A. A warranty shall be provided covering all replacement parts and workmanship for twelve months after Substantial Completion.

B. It shall be the Supplier's responsibility to provide the necessary service engineers to repair and/or replace any defective components during this warranty period including any and all travel expenses incurred for same.

END OF SECTION

Hydropneumatic Bladder Tank
13206F-1 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13206F (BidSetFinal) SECTION 13206F

HYDROPNEUMATIC BLADDER TANK
PART 1 GENERAL

1.01 SUMMARY
A. Section includes:

1. ASME-rated hydropneumatic bladder tank with removable bladder.

1.02 REFERENCES
A. American Society of Mechanical Engineers (ASME):

1. Boiler and Pressure Vessel Code (BPVC).
a. Section VIII-Rules for Construction of Pressure Vessels, Division 1.

B. NSF International (NSF):

1. Standard 61 - Drinking Water System Components.

1.03 DELEGATED DESIGN
A. As specified in Section 01357 - Delegated Design Procedures.

B. Equipment anchoring and bracing to structures.

1.04 SUBMITTALS
A. Submit as specified in Section 01330 - Submittal Procedures and Section 01600 - Product Requirements.

B. Contractor is responsible for completing the Pressure Vessel Inspection Request Form that can be found at the California Department of Industrial Relations website http://www.dir.ca.gov/dosh/pressure.html#PresureVessel.

1. City will pay for the permit fees and should be listed as “Company Contact.” Contractor to coordinate point of contact with City.

C. Product data:

1. List of materials and coatings used with specifications and physical properties for each.

2. Manufacturer's standard operations and maintenance information.

D. Shop Drawings:

1. Detailed drawings or manufacturer's literature to indicate compliance with the specified requirements.

2. Dimensional drawings indicating vessel dimensions, wall thicknesses, and mounting, and anchorage requirements.

Hydropneumatic Bladder Tank
13206F-2 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13206F (BidSetFinal) E. Delegated Design Submittals:

1. Anchoring and bracing: Project-specific calculations with anchoring and bracing details based on support conditions and requirements to resist loads specified in Section 01850 - Design Criteria.
a. To structures for tanks installed in structures designated as seismic design category C, D, E, or F.
b. For tanks installed outdoors.
c. For tanks installed indoors and having a height to diameter ratio greater than 1.0.Installation instructions.

F. Installation instructions.

1. Manufacturer's installation instructions.

2. Equipment anchor setting template.

3. Complete details for installation of the equipment including rigging, moving, and setting into place.

G. Certifications:

1. Certification of compliance with ASME BPVC, and data reports in accordance with the ASME BPVC and other local codes as required.

1.05 WARRANTY
A. Provide manufacturer's standard warranty.

PART 2 PRODUCTS

2.01 GENERAL
A. As specified in Section 01600 - Product Requirements and Section 15050 - Common Work Results for Mechanical Equipment.

2.02 MANUFACTURERS
A. Hydropneumatic bladder tank:

1. One of the following or equal:
a. John Wood Co., JOPR-22-020.
b. Wessels Co., Model FXA 4000.
c. AAtanks., Model FXA-4000.
d. Elbi of America, Series WTL-2.

2.03 DESIGN AND PERFORMANCE CRITERIA
A. General:

1. Design, fabricate, and test tanks in accordance with the requirements of:
a. ASME BPVC.
b. As specified in Section 01850 - Design Criteria.
c. Applicable local codes and regulations.

2. Where conflicts between design criteria exist, request clarification from the Engineer.

Hydropneumatic Bladder Tank
13206F-3 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13206F (BidSetFinal) B. Hydropneumatic bladder tank:

1. Vertically mounted tanks, designed for the operating conditions specified:

Minimum Drawdown Volume 1,000 gallons
Maximum Diameter 8 feet
Pressure Cut-In (psi) 85
Pressure Cut-Out (psi) 120
Maximum Operating Pressure 125 pounds per square inch
Temperature Range 20 to 120 degrees Fahrenheit
Minimum Bladder Lifetime Cycles(1) 50,000
Notes:
(1) 1 Cycle = When hydropneumatic tank bladder experiences 1 duration of Cut-In to Cut-Out pressure.

2. Pressure rating: Unless otherwise indicated on the Drawings, hydropneumatic bladder tanks shall be fabricated in accordance with the ASME BPVC for unfired pressure vessels, for a design pressure rating not less than the lesser of:
a. 150 percent of the maximum operating pressure, or
b. 50 pounds per square inch gauge above the maximum operating pressure.

3. Corrosion allowance: 1/8-inch at shell, heads, and attachments.

4. Tank seal water volume shall be a minimum of 10 percent of the overall tank capacity.

2.04 MATERIALS
A. Tank:

1. Constructed using carbon steel with interior and exterior coatings in unless otherwise indicated on the Drawings.

2. Lifting lugs: Provide lifting lugs at top of tank.

3. Anchor clips:
a. Manufacturer's standard configuration, attached to tank skirt, and as required to resist design forces specified.

B. Bladder: Provide sealed bladder system to separate liquid from the steel tank and the air cushion:

1. Heavy-duty butyl rubber bladder rated for the maximum operating temperature specified.

2. Liquid contained inside the bladder through an exterior system fill connection. a. Material in direct contact with water certified under NSF-61.

3. Bladder and system connection mounted on a tank flanged connection so that bladder is replaceable through the tank flanged connection.

4. Tank factory pre-charged to 30 pounds per square inch gauge with minus 40-degree Fahrenheit dew point dry air.

Hydropneumatic Bladder Tank
13206F-4 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13206F (BidSetFinal) C. Nameplates and certification stamps:

1. Nameplate:
a. Each tank shall bear a stainless steel ASME nameplate. b. Each nameplate shall bear the applicable code symbol.

2. ASME Stamp:
a. Stamp applied to the tank shell.
b. Manufacturer shall be authorized by ASME to apply the applicable code symbols.

D. Fittings and attachments:

1. Fittings as specified in Section 15120 - Piping Specialties or as indicated on the Drawings.

2. Fittings larger than 1 inch shall be flanged.

3. Fittings 1 inch and smaller shall be National Pipe Thread.

E. Access openings:

1. Access openings shall be flanged and, unless otherwise indicated on the Drawings, have a nominal diameter of at least 24 inches.

2. The coverplate and flange of access openings shall each have a net thickness, after machining, of at least 1/2-inch or as required to meet the vessel design pressure.

3. Reinforce openings in accordance with the ASME BPVC.

F. Weld shell attachments for pipe supports, tank gauges, instruments, and other items as indicated on the Drawings before application of the tank interior coating.

2.05 APPURTENANCES
A. Air charging valve:

1. Standard Schrader valve or approved equal industry standard.

B. Air relief valve:

1. Air relief valve shall be sized by manufacturer in accordance with ASME BPVC for unfired pressure vessels.
a. Drain connection located on tank air side.
b. Manufacturer's standard size for the tank size.

C. Manual air vent valve:

1. Screwdriver operated, low projection type vent for shallow height clearance installation; or needle valve, designed for the tank pressure rating at the maximum operating temperature with 1/8-inch male pipe thread connection.

2. Manufactures: One of the following or equal:
a. Armstrong, 505A.
b. Bell and Gossett, 4V.

D. Pressure gauge:

1. Pressure gauges shall be as specified in Section 17404 - Pressure/Vacuum Measurement: Gauges, with a 0 to 125 pounds per square inch gauge dial range.

2. Pressure gauge shall be separated from the tank by ball valves and insulating bushings.

Hydropneumatic Bladder Tank
13206F-5 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13206F (BidSetFinal) E. Anchors:

1. Anchoring to structures:
a. As indicated on the Drawings and as specified in Section 05190 - Mechanical Anchoring and Fastening to Concrete and Masonry.

2.06 FABRICATION
A. Welding:

1. Weld and test welding in accordance with ASME BPVC.

2. Excessive reinforcement shall be ground down to within the ASME BPVC requirements, and as required to install the lining systems.

3. Internal corners and edges shall be ground to a 1/8-inch radius, or a greater radius if required by the lining system.

B. Protective coating:

1. Interior surfaces: Factory coated with high solids epoxy coating as specified in Section 09960 - High-Performance Coatings.

2. Exterior surfaces: Factory coated with primed for field coating as specified in Section 09960 - High-Performance Coatings.

PART 3 EXECUTION

3.01 PREPARATION
A. Anchoring and bracing to structures:

1. Prepare equipment anchor setting template(s) and use to position anchors during construction of supporting structure(s).

2. Install anchors of type and material indicated on approved anchoring designs.

3. Install anchors with embedment indicated on approved anchoring designs.

3.02 INSTALLATION
A. Install tanks:

1. As indicated on the Drawings.

2. As specified in Section 15050 - Common Work Results for Mechanical Equipment.

3. In accordance with accepted manufacturer’s installation instructions and accepted anchorage design details.

B. Field finishes:

1. Not required: Provide tanks with manufacturer's factory-applied coating.

3.03 COMMISSIONING
A. As specified in Section 01756 - Commissioning.

B. Source Testing (Factory Acceptance Tests):

1. Not witnessed.

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2. Furnish: Test reports and Manufacturer’s Certificate of Source Testing. a. Certification of compliance with ASME BPVC for design and performance criteria specified with be considered acceptable Source Testing.

C. Installation Verification:

1. Furnish: Documentation not required.

D. Functional Testing:

1. Equipment testing:
a. Hydropneumatic bladder tank(s).

E. System Testing:

1. As specified in Section 01756 - Commissioning, Attachment G.

2. As specified in this Section.

3. Furnish Manufacturer’s Certificate of Functional Compliance.

END OF SECTION

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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (BidSetFinal) SECTION 13207

STRAND-WOUND CIRCULAR PRESTRESSED CONCRETE TANK WITH A

TYPE I CORE WALL AND FLAT ROOF

TABLE OF CONTENTS
PART 1 GENERAL ................................................................................................................. 2

1.01 SUMMARY ................................................................................................................... 2

1.02 REFERENCES ............................................................................................................. 2

1.03 SUBMITTALS ............................................................................................................... 4

1.04 NON-RESPONSIVE BID .............................................................................................. 6

1.05 QUALITY ASSURANCE ............................................................................................... 6

1.06 DESIGN CRITERIA ...................................................................................................... 8

1.07 PRODUCT DELIVERY, STORAGE, AND HANDLING .............................................. 12

1.08 PROJECT CONDITIONS ........................................................................................... 12

1.09 SEQUENCING AND SCHEDULING .......................................................................... 13

1.10 GUARANTEE ............................................................................................................. 14 PART 2 PRODUCTS ............................................................................................................ 14

2.01 MATERIALS ............................................................................................................... 14

2.02 SOURCE QUALITY CONTROL ................................................................................. 22

2.03 COMPLIANCE TESTING ........................................................................................... 22 PART 3 EXECUTION ........................................................................................................... 22

3.01 SUPERVISION ........................................................................................................... 22

3.02 INSTALLATION .......................................................................................................... 22

3.03 FLOOR ....................................................................................................................... 24

3.04 CONCRETE ............................................................................................................... 24

3.05 SEISMIC CABLES ...................................................................................................... 25

3.06 PRESTRESSING ....................................................................................................... 26

3.07 SHOTCRETING ......................................................................................................... 29

3.08 CLEANING ................................................................................................................. 33

3.09 DISINFECTING .......................................................................................................... 33

3.10 FILLING AND WATERTIGHTNESS TESTING .......................................................... 33

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1.01 SUMMARY
A. Work includes:

1. This section specifies the design and construction of an AWWA D110, Type 1, strand-wrapped circular prestressed concrete tank, furnishing, installation, testing, and disinfection. The tank shall consist of: foundation, underdrain system, concrete membrane floor slab, cast-in-place concrete core wall, cast-in-place concrete roof support columns and drop panels, flat cast-in-place concrete roof slab, and all associated appurtenances. The core wall shall be vertically post-tensioned with thread bars, prestressed circumferentially with machine-wrapped seven-wire galvanized strand, and protected with several coats of shotcrete. The foundation shall be constructed with continuous shallow concrete spread footings below the perimeter wall. The column footings shall be spread footings that are cast on top of the concrete floor. The concrete floor shall be constructed with a concrete slab on grade.

2. In the event of a discrepancy between this section of the Specifications and any other section of the Specifications, this section shall govern.

3. The Tank Contractor shall furnish all labor, materials, tools, and equipment necessary to design, construct, disinfect, and test the prestressed concrete tank.

B. Related sections:

1. Section 01410 - Regulator Requirements.

2. Section 01759 - Water Leakage Test for Concrete Structures.

3. Section 02300 - Earthwork.

4. Section 03102 - Concrete Formwork.

5. Section 03150 - Concrete Accessories.

6. Section 03200 - Concrete Reinforcing.

7. Section 03300 - Cast-in-Place Concrete.

8. Section 03931 - Epoxy Injection System.

9. Section 09960 - High-Performance Coatings.

1.02 REFERENCES
A. Abbreviations:

1. cfm - cubic feet per minute.

2. f’c - specified compressive strength of concrete.

3. g - gravitational constant, equal to 32.2 feet per second squared.

4. gpm - gallons per minute.

5. ksi - kips per square inch.

6. MG - million gallons.

7. mph - miles per hour.

8. pcf - pounds per cubic foot.

9. psf - pounds per square foot.

10. psi - pounds per square inch.

11. PVC - polyvinyl chloride.

12. sec - seconds.

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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (BidSetFinal) B. Definitions:

1. Core Wall - That portion of the concrete tank wall that is circumferentially post-tensioned.

2. Prestressed Concrete - Concrete in which internal compressive stresses of such magnitude and distribution have been introduced through post-tensioning to offset tensile stress development from service loads.

3. Prestressing Reinforcement - High-strength steel used to prestress the concrete tank wall.

4. Rebound - The shotcrete material that ricochets off of the receiving surface and falls.

5. Shotcrete - Pneumatically applied wet mortar or concrete used for embedment protection of the circumferential prestressed wall reinforcement.

6. Strand - A symmetrically arranged and helically twisted assembly of seven high-strength steel wires used for prestressing reinforcement or as nonprestressed seismic cables.

7. Stressing Machine - May refer to the automated wrapping machinery used to post-tension the strand around the tank circumference or vertical post-tensioning equipment used to post-tension vertical thread bars.

8. Tank Contractor - A qualified tank manufacturer and/or contractor that specializes in the design and construction of an AWWA D110 type of tank specified herein.

9. Tendon - High-strength thread bar, including end anchorages, used to impart vertical prestressed forces to the tank wall.

10. Wire - High-strength, cold-drawn steel wire used to assemble strands.

C. Reference Standards:

1. American Concrete Institute (ACI):
a. ACI 301-16 - Specifications for Structural Concrete, 2016. b. ACI 305.1-14 - Specification for Hot Weather Concreting, 2014. c. ACI 306.1-90 - Standard Specification for Cold Weather Concreting, 1990. d. ACI 350-06 - Code Requirements for Environmental Concrete Structures and Commentary, 2006.
e. ACI 350.1-10 - Specification for Tightness Testing for Environmental Engineering Concrete Containment Structures and Commentary, 2010. f. ACI 350.3-06 - Seismic Design of Liquid-Containing Concrete Structures and Commentary, 2006.
g. ACI 350.5-12 - Specifications for Environmental Concrete Structures, 2012.
h. ACI 372R-13 - Design and Construction of Circular Wire- and Strand-Wrapped Prestressed Concrete Structures, 2013.
i. ACI 506R-16 - Guide to Shotcrete, 2016.
j. ACI 506.2-13 - Specification for Shotcrete, 2013.

2. ASTM International (ASTM):
a. A 185 - Standard Specification for Steel Welded Wire Reinforcement, Plain, for Concrete.
b. A 416 - Standard Specifications for Steel Strand, Uncoated Seven-Wire for Prestressed Concrete.
c. A 475 - Standard Specification for Zinc-Coated Steel Wire Strand. d. A 615 - Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement.

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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (BidSetFinal) e. A 706 - Standard Specification for Low-Alloy Deformed and Plain Bars for Concrete Reinforcing.
f. A 722 - Standard Specification for Uncoated High-Strength Steel Bars for Prestressed Concrete.
g. C 33 - Standard Specification for Concrete Aggregates. h. C 150 - Standard Specification for Portland Cement.
i. C 171 - Standard Specification for Sheet Materials for Curing Concrete. j. C 618 - Type F Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete.
k. D 570 - Standard Test Method for Water Absorption of Plastics. l. D 624 - Standard Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers.
m. D 638 - Standard Test Method for Tensile Properties of Plastics. n. D 746 - Standard Test Method for Brittleness Temperature of Plastics and Elastomers by Impact.
o. D 747 - Standard Test Method for Apparent Bending Modulus of Plastics by Means of a Cantilever Beam.
p. D 792 - Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement.
q. D 1056 - Standard Specification for Flexible Cellular Materials- Sponge or Expanded Rubber.
r. D 2000 - Standard Classification System for Rubber Products in Automotive Applications.
s. D 2240 - Standard Test Method for Rubber Property-Durometer Hardness.

3. American Society of Civil Engineers (ASCE):
a. 7-10 - Minimum Design Loads for Buildings and Other Structures.

4. American Water Works Association (AWWA):
a. C652 - Standard for Disinfection of Water-Storage Facilities. b. D110-13 - Wire- and Strand-Wound, Circular, Prestressed Concrete Water Tanks, 2013.

5. Code of Federal Regulations (CFR):
a. Part 1910 - Occupational Safety and Health Standards (OSHA).

6. NSF International (NSF):
a. 61 - Drinking Water System Components - Health Effects.

7. U.S. Army Corps of Engineers (USACE):
a. CRD C 572 - Corps of Engineers Specifications for Polyvinylchloride Waterstop.

1.03 SUBMITTALS
A. Product data:

1. Waterstops:
a. Submit samples, prints, and complete physical property data covering waterstops.
b. Laboratory test reports: Submit reports indicating that average properties of polyvinyl chloride waterstops material and finish conform to requirements specified in this Section.

2. Epoxy grouting equipment: Submit product information.

3. Neoprene bearing pads: Submit product information.

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4. Stressing machine:
a. Submit a description of the proposed equipment.
b. Submit calibration reports for force recording equipment used installation of vertical thread bars and circumferential prestressing.

B. Shop drawings:

1. Drawings showing all plan views, sections, and details of the tank construction, including, but not limited to, all structural elements, all appurtenances, connections, joints, waterstop, roof hatches, vents, ladders, fall arrest and protection systems, guardrails, piping, pipe penetrations, pipe supports, sub-grade preparation, base liners, tank instrumentation, and materials for roof drainage and conductance.

2. Drawings of entire prestressing operation showing vertical thread bar and circumferential strand placement with associated schedules and intermediate lock-off elevations, prestressing bar and strand size, ducts for vertical thread bars, and anchorage details.

3. Drawings for placement and detailing of all reinforcing steel.

4. Drawings showing:
a. Neoprene bearing pads and methods of pad installation. b. Waterstop and methods of installation.
c. Sponge filler pads or sleeves and methods of installation. d. Exterior coating system.

5. All shop drawings shall be signed and sealed by a registered California structural or civil engineer.

C. Design submittals:

1. Structural calculations for all aspects of the structural design of the tank, along with calculations for prestressing reinforcement, elongation estimates, soil capacity checks, and calculations for any other structural design aspect.

2. Concrete mix designs in accordance with Section 03300 - Cast-in-Place Concrete and additional provisions specified herein.

3. Shotcrete mix designs in accordance with the provisions specified herein.

4. Admixtures to be used in the concrete and/or shotcrete and their purpose.

5. All design submittals shall be signed and sealed by a registered California structural or civil engineer.

D. Tank responsibility statement:

1. The Tank Contractor shall submit a statement attesting that they have assumed responsibility for the tank design and construction. The statement shall be signed and sealed by the Tank Contractor’s
engineer-in-responsible-charge of the tank design. No other submittal items will be reviewed until a satisfactory statement has been received.

E. Qualification Statement:

1. Failure to submit a qualifications statement package will be deemed an irregularity, which will cause bid to be rejected as nonresponsive.

2. Submit pertinent information that demonstrates conformance with Quality Assurance requirements specified herein.

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3. To include:
a. Company history, contact person(s), address, and telephone number. b. Project references with owner and engineer’s contact information. c. Name and work history of the on-site project manager to be assigned to the project.

F. Quality control submittal:

1. Certificates of Compliance:
a. Thread Bars: Submit certified test reports that verify bars and anchorage meet specified material standards.
b. Waterstop: Submit certificates certifying that waterstops provided on this project meet or exceed physical property requirements of current USACE CRD C 572.
c. Circumferential prestressing: Submit certified test reports for each size, heat, and reel that verify conformance to applicable ASTM standards for materials, strength, and yield properties.

G. Test reports:

1. Strand and vertical thread bar prestressing records.

H. Manufacturer's instructions:

1. Tank appurtenances: Submit manufacturer’s installation instructions.

1.04 NON-RESPONSIVE BID
A. Qualifications statement package:

1. Submit a qualifications statement package with the bid. The package shall contain information as required per Section 1.03.E.

2. Failure to submit a qualifications statement package will be deemed an irregularity that may cause bid to be rejected as non-responsive.

1.05 QUALITY ASSURANCE
A. Qualifications:

1. Singular Responsibility:
a. It is the intent of these Specifications to create singular responsibility for design, construction, and performance of the prestressed concrete tank.

The design and construction of all aspects of the foundation, floor slab, core wall, columns, prestressing, shotcrete, and roof of the tank shall be performed by the Tank Contractor.
1) No portion of the work on the tank shall be subcontracted unless:
a) Prior acceptance is obtained from the Engineer; and
b) The Tank Contractor’s on-site project manager personally supervises the work of any subcontractors and their personnel. b. If the Tank Contractor believes that any requirement of this Section represents a departure from its normal recommendations that will affect the quality or performance of the tank, notify the Engineer in writing of such concerns. For each provision of concern, cite the relevant

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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (BidSetFinal) paragraphs of this Section and indicate the Tank Contractor’s recommended modifications or alternatives to those provisions. 1) Acceptance of Tank Contractor’s alternatives shall be at the discretion of the Engineer, and the decision of the Engineer shall be final.

2. The specified tank shall be designed and constructed by a single Tank Contractor. The Tank Contractor shall be experienced in the design and construction of circumferentially prestressed tanks with cast-in-place concrete core wall sections using freed neoprene bearing pad connections at the top and base of the wall, PVC waterstops, seismic cables placed between the wall and the foundation, and a flat supported concrete roof deck. a. No Tank Contractor is considered qualified unless it has designed and built the following projects in its own name:
1) At least twenty circumferentially prestressed concrete tanks with flat concrete roofs conforming to AWWA D110, Type I in the last ten years.
2) At least ten circumferentially prestressed concrete tanks with flat concrete roofs conforming to AWWA D110, Type I used for potable water storage that have been in successful operation for at least five years.
3) At least five circumferentially prestressed concrete tanks with flat concrete roofs conforming to AWWA D110, Type I that are 1.5 MG or larger in the last ten years.
b. The Tank Contractor shall have in its employ a design engineer with a minimum of ten years of experience in the design of AWWA D110 Type I tanks with flat concrete roofs. The design engineer shall have been the engineer of record for a minimum of ten AWWA D110 Type I tanks designed for and constructed by the Tank Contractor in its own name. The design engineer shall be licensed as a civil or structural engineer in the state of California.
c. The Tank Contractor shall have in its employ for this project a team consisting of an on-site project manager, concrete foreman, shotcrete foreman, shotcrete nozzleman, and prestressing foreman, each of whom shall have constructed in the last ten years a minimum of five AWWA D110 Type I tanks with flat concrete roofs having a capacity of

1.5 MG or greater.
1) Experience gained on shotcrete pool and ditch construction will not be considered as qualifying experience for nozzleman.
2) Skill of nozzleman:
a) Capable of applying thin coats of even and uniform thickness. b) Certified shotcrete nozzleman in accordance with ACI 506R.

3. Experience in the design and construction of AWWA D110 Type II, Type III, or Type IV tanks will not be accepted as demonstrating the qualifications required by the preceding paragraphs.

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1.06 DESIGN CRITERIA
A. Except as modified herein, the prestressed concrete tank shall be designed and constructed in compliance with the provisions of AWWA D110 for strand-wound circular, prestressed concrete water tanks with Type I core wall.

1. The prestressed concrete tank core wall shall be of cast-in-place concrete construction. Shotcrete or precast core walls are not permitted under the provisions of this Section.

B. Standards/Codes:

1. The prestressed concrete tank shall be designed and constructed as specified herein, and in accordance with provisions of the following standards and codes:
a. AWWA D110-13.
b. ACI 350-06.
c. ACI 350.3-06.
d. ASCE 7-10.

2. Where conflicts between the requirements of this Section and of these standards and codes occur, the more restrictive provisions shall apply. a. Exception: Requirements for concrete cover and member thickness shall be as specified in this Section.

C. Load criteria and requirements to be used by the Tank Contractor in the design calculations:

1. Capacity: 2.0 MG usable storage below the maximum water elevation shown on the Drawings.
a. Inside Diameter: 115 feet.

2. Dead Load: shall be the estimated weight of all permanent imposed loads. a. Unit weight of concrete shall be taken as 150 pounds per cubic foot. b. Unit weight of steel shall be taken as 490 pounds per cubic foot.

3. Fluid Load: shall be the lateral pressure and weight of the water when the tank is filled to a level that is 6 inches above the elevation of the top of the overflow elevation as indicated on the Drawings (to allow for overflow conditions). a. Unit weight of water shall be taken as 62.4 pounds per cubic foot.

4. Roof Live Load:
a. Uniform: 40 pounds per square foot, non-reducible.
b. Any concentrated reactions due to the use of fall protection equipment. c. Application of fall protection equipment reaction loads shall be applied concurrently with uniform roof live load. However, load factors for the load case where the combination of uniform and fall protection reactions are considered simultaneously may be taken as unity.

5. Construction Loads:
a. Loads applied to the tank during construction shall be accounted for in the design of the tank.

6. Geotechnical Report: See Appendices to the Specifications.

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7. Foundation Loads: the tank foundation shall be proportioned so that the net foundation bearing pressure shall be less than the net allowable soil bearing pressure specified in the Geotechnical Report.
a. The allowable soil bearing pressure may be increased by 33 percent for load combinations that include wind or seismic loads.
b. Settlement Loads: the tank shall be designed to resist the effects of total and differential settlement indicated in the Geotechnical Report.

8. The final design for wind and seismic loads shall consider a reduced capacity to resist sliding due to any membranes placed between the bottom of the concrete foundation and the soil.

9. Wind Load: determined in accordance with ASCE 7-10.
a. Exposure Category C.
b. Basic Wind Speed = 104 mph (3-sec gust).
c. Importance Factor, IW = 1.00.

10. Seismic Design Criteria: seismic design shall be based on the applicable sections of AWWA D110-13, ASCE 7-10, and ACI 350.3-06. The seismic forces shall be calculated using each code separately. The total base shear used for design shall be the maximum value obtained from the three codes used.
a. When comparing force and base shear values, those obtained from ASCE and ACI shall be based on service level loads.
b. AWWA D110-13 Design Criteria:
1) Occupancy Category, IV.
2) Importance Factor, I = 1.50.
3) Mapped Spectral Acceleration for Short Period, SS = 1.48g. 4) Mapped Spectral Acceleration for 1-second Period, S1 = 1.58g. 5) Site Class D.
6) Impulsive Structure Coefficient, RI = 3.5.
7) Convective Structure Coefficient, RC = 1.0.
8) Overstrength Factor,Ωo, 2.0.
c. ASCE 7-10 Design Criteria:
1) Risk Category IV.
2) Mapped Spectral Acceleration for Short Period, SS = 1.48g. 3) Mapped Spectral Acceleration for 1-second Period, S1 = 1.58g. 4) Site Class D.
5) Response Modification Factor, R = 3.25.
6) Overstrength Factor,Ωo, 2.0.
7) Long-period Transition Period, TL = 12 sec.
8) Importance Factor, I = 1.50.
d. ACI 350.3-06 Design Criteria:
1) Mapped Spectral Acceleration for Short Period, SS = 1.48g. 2) Mapped Spectral Acceleration for 1-second Period, S1 = 1.58g. 3) Site Class D.
4) Response Modification Factor, R = 3.25.
5) Long-period Transition Period, TL = 12 sec.
6) Importance Factor, I = 1.50.
e. The sloshing wave height shall be taken as the larger of the values calculated in accordance with AWWA D110-13, ASCE 7-10, and ACI 350.3-06.
1) In the event that the calculated height of the “sloshing wave” exceeds the freeboard of the tank (distance from the maximum operating

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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (BidSetFinal) water surface elevation to the bottom of the roof deck at the wall), the tank and the roof deck shall be designed to accommodate the dynamic effects as follows:
a) Any portion of the convective sloshing wave that extends above the top of the tank wall (bottom of the roof deck at the wall) shall be calculated and applied to the roof deck as an uplift pressure in accordance with section 15.7.6.1.2.c of ASCE 7-10.
b) Additionally, the mass of any confined portion of the convective sloshing wave shall be included with the impulsive mass used in the estimation of the hydrodynamic forces applied to the tank for design, also in accordance with section 15.7.6.1.2.c of ASCE 7-10.
c) Any revisions to the tank, including but not limited to, the roof elevation, water overflow level, and roof slab that are required to meet the specified provisions to resist sloshing loads and its effect on the hydrodynamic design shall not result in additional costs to the Owner.

11. Temperature and moisture gradients: effects due to changes in temperature and due to temperature and moisture gradients across structural members shall be considered in the design. Refer to Section 1850 - Design Criteria.

12. Prestressing application: forces applied to the wall shall be considered in the design of the wall, especially where wall penetrations result in locally increased prestressing force application to the wall.

13. On screen mesh size and screen open area:
a. The vent shall be sized for a minimum rate of 750 cfm or the rate of volumetric withdrawal assuming the outlet pipe has ruptured, whichever is greater.

14. Overflow Design Capacity: 2,000 gpm with maximum 9-inch water height over the top of the overflow weir.

D. Floor Slab and Wall Footing Requirements:

1. The floor slab shall be designed as a membrane floor slab as defined in ACI 372R, Section 3.2.2 that is not less than 24 inches thick; or the floor slab may be designed as a slab-on-ground with a thickness not less than 24 inches.

2. Construction joint locations shall be submitted to the Engineer for review. a. Where construction joint spacing exceeds 50 feet, provide means for reducing shrinkage below the limit specified in Section 03300 - Cast-in-Place Concrete in proportion to the extent the spacing limit of 50 feet is exceeded.
b. Use of construction joints in the floor slab shall be minimized.

3. Minimum ratio of floor slab reinforcement area to concrete area shall be

0.5 percent for each orthogonal direction, with bars spaced no greater than 12 inches on center or two times the slab thickness, whichever is less.

4. Minimum concrete cover over reinforcing steel shall be in accordance with Table 3.3.2.3 of ACI 350.5.

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5. Wall footings shall bear below floor sub-grade and shall be placed monolithically with the floor slab.
a. The bottom of the wall footing shall be embedded a minimum of 60 inches below the lowest finish grade elevation over the outside edge of the footing or as indicated on the Drawings, whichever is greater.

6. Design of the floor and wall footing shall consider the differential base stiffness and at concrete encasements or hard points below the floor and wall footing.

E. Column Footing Design Requirements:

1. Column footings shall be designed in accordance with ACI 350.

2. Column footings shall be constructed on top of the floor slab (no projections below the floor slab).

3. Where column footings are to be located, recess the floor slab 2 inches and roughen the top surface of the slab in the recessed area to a 1/4-inch magnitude.

F. Wall Design Requirements:

1. The prestressed concrete tank wall shall be constructed with a cast-in-place core wall that is circumferentially wrapped with seven-wire strand prestressing reinforcement at the exterior and encapsulated within protective shotcrete layers. The core wall is to be vertically prestressed with post-tensioned thread bars.

2. The thickness of the core wall shall not be less than 10 inches thick.

3. The minimum average vertical compressive axial prestress in the core wall provided by the vertical prestressing reinforcement shall be 200 psi after deduction for all losses.
a. Vertical prestressing reinforcement shall be spaced on average no greater than 50 inches on center or seven times the thickness of the core wall, whichever is less.

4. The minimum average circumferential residual prestress compression in the wall shall not be less than 200 psi for the aboveground portion of the tank wall, tapering linearly to 50 psi at 6 feet below grade.

5. The connection between the base of the wall and the foundation shall be an anchored flexible connection in accordance with Section 4.2.1 and Figure 4B of AWWA D110-13.
a. The joint at the base of the wall shall permit unrestrained radial expansion and contraction of the wall relative to the foundation. b. The joint at the base of the wall shall provide restraint against lateral seismic loads acting tangentially to the wall.
c. Restraint cables shall be provided between the core wall and the foundation to resist seismic loads. The cable installation shall be detailed in a manner that does not introduce radial restraint between the wall and the foundation.

6. The joint at the wall to the roof shall allow the roof to expand and contract radially while maintaining full vertical load bearing capacity under all conditions.

7. The minimum concrete cover over non-prestressed reinforcing shall be in accordance with Table 3.3.2.3 of ACI 350.5.

8. Vertical non-prestressed reinforcing:
a. Provide vertical non-prestressed reinforcing over the full height of the wall. b. The tensile stress shall be limited to a maximum of 18,000 psi.

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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (BidSetFinal) c. Reinforcing size shall not exceed 3/4-inch in diameter. d. Reinforcing spacing shall not exceed 12 inches on center.

G. Flat Roof and Column Design Requirements:

1. The roof shall be a flat, cast-in-place concrete structure that spans in two directions.

2. The minimum thickness of the roof slab shall be 9 inches.

3. The roof slab shall be provided with drop panels at concrete column supports.

4. Columns shall be limited to a maximum spacing of as shown on the Drawings.

5. Columns shall be circular with a minimum diameter of 18 inches.

6. Columns shall be reinforced with spirals.

7. Minimum concrete cover over reinforcing steel shall be in accordance with Table 3.3.2.3 of ACI 350.5.

8. The reinforcing steel for the roof structure shall be sized in accordance with ACI 350 with the environmental durability factor, Sd, applied to limit flexural stress. Reinforcing steel shall be proportioned and distributed to control cracking for normal environmental exposure.

9. The effects of thermal expansion and contraction shall be accounted for in the design of the roof structure. Appurtenances and roof connections shall be detailed to limit restraint to thermal radial movement.

10. The Tank Contractor shall submit, for the Engineer's approval, a plan showing the roof configuration that includes construction joints. Construction joints shall incorporate a 6-inch PVC waterstop.

1.07 PRODUCT DELIVERY, STORAGE, AND HANDLING
A. Prestressing steel shall be adequately packaged for protection against corrosion and physical damage during shipping and storage.

B. Prestressing steel that has rusted or has otherwise sustained damage will be rejected.

C. Prestressing material and appurtenances delivered to project site: Store off ground on planks, supported by 4-by-4 timber. Cover with polyethylene sheeting or treated paper to prevent exposure to moisture.

1.08 PROJECT CONDITIONS
A. Environmental requirements:

1. Cold weather epoxy grouting of tendons:
a. In cold weather, and especially during frosts, take special precautions to avoid freezing of epoxy.
b. In event that grouting procedure cannot be postponed, keep wall temperature above freezing point with hot blankets or by other means acceptable to Engineer.

B. Site safety precautions:

1. Take every precaution to keep personnel and visitors outside the area of danger from breaking prestressing strands or bars.

2. At no time shall anyone stand in the line of stressed circumferential strand.

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3. No work shall be performed by anyone, other than the prestressing crew within 100 feet of circumferential wrapping operation or vertical bar stressing operation.

4. Where access to the site by unauthorized persons cannot be controlled while prestressing work is in progress, or where property lines are less than 100 feet from the wrapping operation, erect protective fencing to prevent breaking strands from endangering such persons.

C. Welding:

1. Perform no welding to anchor plates after prestressing tendons have been assembled.

2. Do not use prestressing steel as ground for welding operations.

1.09 SEQUENCING AND SCHEDULING
A. Polyvinyl chloride waterstops:

1. Welding of polyvinyl chloride waterstops: Prior to installing waterstops in forms, demonstrate ability to weld acceptable joints in waterstops.

2. Quality of welded joints: Are to be subject to acceptance of the Engineer.

B. Restrictions on shotcrete operations:

1. Abrasive Blasting:
a. Do not commence prior to the completion date of curing period of tank corewall.
b. Do not commence until all form tie holes have been drypacked.

2. Wind conditions: Do not apply shotcrete under such strong wind conditions that considerable amount of cement and moisture is removed by wind from mortar spray between nozzle and surface on which shotcrete is applied.

3. Temperature requirements:
a. Peak temperature during day must be expected to rise to at least 55 degrees Fahrenheit.
b. Night temperature of first night after shotcrete application must not be expected to drop below 33 degrees Fahrenheit.

4. Cold weather conditions:
a. Application of shotcrete under cold weather conditions is solely at the Tank Contractor's risk.
b. Shotcrete may be applied in cold weather provided surfaces are not frozen.
c. Damage to shotcrete: Whenever rain or frost damages shotcrete which has not had chance to take set:
1) Remove and replace such shotcrete.
2) Remove damaged shotcrete before applying any new layers of shotcrete.
d. Type III Portland cement may be utilized for shotcrete for cold weather application.

C. Ultimate initial prestressing force for vertical thread bars: Do not apply until concrete compressive strength in walls reaches specified strength.

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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (BidSetFinal) D. Wrapping of circumferential prestressing strands:

1. May start when core wall concrete has reached a compressive strength of 3,000 pounds per square inch and intermediate layers of shotcrete coats over prestressing strands has reached a compressive strength of 250 pounds per square inch or 12 hours after the shotcrete coat was applied, whichever is greater.

2. The compressive stress in the concrete due to wrapping shall not exceed 55 percent of f'c at any time.

E. Backfilling of tanks:

1. Do not backfill until and unless the Engineer has accepted leakage testing results and the concrete has reached specified strength.

1.10 GUARANTEE
A. The Tank Contractor shall guarantee the structure against defective materials or workmanship for a period of two years from the final date of completion. If any materials or workmanship prove to be defective within two years, those materials shall be replaced or repaired by the Tank Contractor at the expense of the Tank Contractor.

B. Access hatch (through-roof access) warranty:

1. Manufacturer is to warranty proper operation and against defects in material or workmanship for a period of 5 years.

PART 2 PRODUCTS

2.01 MATERIALS
A. General:

1. Materials of construction for the strand-wound prestressed concrete tank shall be selected by the Tank Contractor, subject to the limitations of this Section.

B. Concrete:

1. Concrete shall conform to Section 03300 - Cast-in-Place Concrete and ACI 301, except as modified herein.

2. Unless otherwise specified, all concrete for tank construction shall have a minimum 28-day compressive strength of 4,000 psi.

3. The concrete for the tank floor, footings, and pipe encasement shall conform to the following requirements.
a. Concrete shall not be air-entrained.
b. The coarse and fine aggregate shall meet the requirements of ASTM C33 and sized to meet member thickness and clearance requirements of ACI 350.
c. Superplasticizer and water-reducing admixtures shall be incorporated into the concrete for the floor slab and wall footing.

4. Proportioning for concrete shall be in accordance with ACI 301.

5. All concrete shall have a maximum water-soluble chloride ion concentration of

0.06 percent by weight of cement.

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6. Cement shall conform to ASTM C 150, Type I or Type II.

7. Accelerating and retarding admixtures shall not be incorporated into the any concrete mix without prior acceptance by the Engineer.

C. Reinforcing Steel:

1. Reinforcing steel shall be new billet steel Grade 60 meeting the requirements of ASTM A 615.

2. Reinforcing steel that is to be welded shall be ASTM A 706, Grade 60.

3. Reinforcing steel shall be accurately fabricated and shall be free from loose rust, scale, and contaminants.

4. Reinforcing steel shall be accurately positioned on supports, spacers, hangers, or other reinforcement and shall be secured in place with wire ties or suitable clips. Rebar chair supports shall be provided in accordance with Section 03200 - Concrete Reinforcing.

D. Prestressing Materials:

1. Seven-wire strand:
a. Prestressing strand shall be in accordance with ASTM A 416 prior to hot-dip galvanizing.
b. Individually hot-dip galvanize each wire of strand before forming the wires into a strand.
c. Hot-dip galvanized 7-wire strand shall meet following minimum requirements:

Physical Characteristics Required Results
Nominal Strand Diameter Before Galvanizing 3/8 inch
Nominal Area After Galvanizing 0.089 square inch
Nominal Weight Per 1,000 Linear Feet 303 pounds
Pitch of Strand 12 to 16
Minimum Yield Strength At 1 Percent Extension 180,000 psi Minimum Ultimate Strength After Galvanizing 240,000 psi Elongation In 24 Inches At Fracture 4.5 percent
Weight Of Zinc Coating per ASTM A475 0.85 ounces per square foot

2. High strength thread bars:
a. Thread bars and deformations: Hot rolled.
1) Thread bars with cold rolled threads or with quenched or tempered steels will not be permitted.
b. Deformations of thread bars:
1) Provide deformations that form screw-thread suitable for mechanically coupling lengths of thread bar and provide positive attachment of anchor assemblies.
2) Provide deformations that are in accordance with ASTM A 722, Type II requirements and are uniform such that any length of bar may be cut at any point and internal threads of coupler designated for that size of bar can be freely screwed on bar.

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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (BidSetFinal) c. Tensile and physical properties: Bars manufactured in accordance with ASTM A 722, Type II requirements are to comply with following minimum requirements:

Physical Characteristics Required Results
Nominal Diameter 1.25 inches or 1.375 inches
Nominal Cross-Sectional Area 1.245 square inches or

1.577 square inches
Nominal Bar Weight 4.39 pounds per foot or

5.56 pounds per foot
Minimum Tensile Stress 150 ksi
Minimum Yield Stress at 0.2 Percent Offset 120 ksi
Elongation At Rupture In Gauge Length of
20 Bar Diameters
4 percent minimum
Maximum Carbon Content of Bar 0.55 percent
d. Nuts: Minimum ultimate strength shall be 95 percent of minimum ultimate strength of thread bar.

3. Anchorages for vertical post-tensioned thread bars:
a. All post-tensioned prestressing shall be secured at the ends by means of approved permanent anchoring devices, which shall hold the prestressing steel at a force not less than 95 percent of the guaranteed minimum tensile strength of the prestressing steel.
b. The load from the vertical prestressing anchoring device shall be distributed to the concrete through steel bearing plates and shall not exceed the values specified by the Post-Tensioning Institute (PTI), Guide Specifications, Paragraph 3.1.7.
c. Fully-threaded anchor connections shall be used at both ends of the vertical prestressing bar, which shall incorporate a spherical-shaped bearing surface to match the conical surface in the bearing plate. d. Wedge anchors shall not be used for permanent anchor hardware.

4. Testing of Prestressing Material:
a. Provide mill certificates.
b. Prior to preparation of shop drawings and installation of vertical thread bars, provide proof that the thread bar anchorage system meets the requirements specified herein.
c. Before any prestressing operations may be started, the Tank Contractor shall calibrate all recording equipment at an approved testing laboratory to the satisfaction of the Engineer.
d. All continuous force readings for either the vertical or the circumferential prestressing operations shall be developed with electronic (or the substantial equivalent) force (strain gauge method) sensing transducers, all having a maximum nonlinearity error of +/- 0.5 percent and a maximum hysteresis error of +/- 0.25 percent.

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5. Anchor pockets for vertical thread bars:
a. Consist of steel cans fabricated from steel tubing, hot-dip galvanized after cutting and subsequently welded to the top bearing plate. b. Provide adequate means for flushing of vertical ducts during concrete placement.

6. Ducts for vertical thread bars:
a. Duct enclosures shall be standard 1.25 inch or 1.375 inch diameter PVC pipe class 160 or class 200, respectively, unless otherwise specified on the Drawings.
b. Threaded hose connections shall be provided at the top of each duct for water flushing.
c. All ducts shall be provided with expandable valves to facilitate the injection of epoxy grout after prestressing.

7. Epoxy grout for vertical thread bars:
a. The vertical thread bar system shall offer complete two-part epoxy protection of the prestressing steel inside ducting and anchors. b. Portland cement grout will not be accepted.

E. Seismic Cables and Sleeves:

1. Seismic cables:
a. Hot-dipped galvanized seven-wire strand:
b. Prestressing strand shall be in accordance with ASTM A 416 prior to galvanizing and ASTM A 475 after galvanizing.
c. Individually hot-dip galvanize each wire of strand before forming the wires into a strand.
d. The galvanized strand shall have a minimum ultimate tensile strength of 240,000 psi.
e. The cables shall be installed to connect the wall and the foundation. f. The minimum weight of zinc galvanic coating shall be 0.85 ounces per square foot.
g. Only seven-wire strand will be allowed. Single wire will not be allowed.

2. Neoprene sleeves for seismic cables shall conform to SCE-43 of ASTM D 1056 and as further modified by the following:

Physical Characteristics Required Results
Compressive deflection 9 to 13 psi
Shore 00 durometer 60 to 80 pcf
Density 12 to 28 pcf
Water absorption by weight 5 percent
Temperature range: Low (flex without cracking)
High continuous
High intermittent
-40 degrees F
150 degrees F
250 degrees F
Compressive set (average): 1/2-inch sample
compressed at 50 percent for 22 hours at 70 degrees F
and 24 hour recovery
15 to 35 percent
Maximum linear shrinkage during heat aging (7 days at
158 degrees F)
5 percent

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Minimum tensile strength 175 psi
Minimum elongation 180 percent
Resilience (bayshore – percent rebound average
1/2-inch thickness at 72 degrees F)
20 to 40 percent
F. Shotcrete:

1. General:
a. Shotrcrete shall conform to ACI 506.2, except as modified herein. b. Minimum compressive strength of shotcrete shall be 4,500 psi at 28 days. c. Shotcrete used in the tank construction shall have a maximum water soluble chloride ion concentration of 0.06 percent by weight of cement. d. Rebound materials shall not be reused in any form for shotcrete

2. Portland cement shall meet the general requirements in Section 03300 - Cast-in-Place Concrete.

3. Fine aggregates:
a. Fine aggregates shall meet the requirements as specified in Section 03300 - Cast-in-Place Concrete and the following paragraphs. b. Coarse sand:
1) Shotcrete applications: Use well graded coarse sand, unless otherwise noted.
2) Gradations:

Sieve Size Percent Passing by Weight
3/8 inch 100
Number 4 95-100
Number 8 80-100
Number 16 50-85
Number 30 25-60
Number 50 10-30
Number 100 2-10
c. Fineness modulus shall be between 2.7 and 3.0.

4. Water shall be in accordance with Section 03300 - Cast-in-Place Concrete.

5. Class F fly ash shall conform to ASTM C618 and shall not make up more than 20 percent of the cementitious material in the shotcrete mix.

G. Elastomeric Materials:

1. Bearing pads shall be natural rubber or neoprene:
a. Natural rubber bearing pads shall contain only virgin natural polyisoprene as the raw polymer and the physical properties shall comply with ASTM D 2000 Line Call-Out M4AA414A13.
b. Neoprene bearing pads shall have a hardness of 40 to 50 durometer, a minimum tensile strength of 1,500 psi, a minimum elongation of 500 percent, and a maximum compressive set of 50 percent. Pads shall

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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (BidSetFinal) meet the requirements of ASTM D 2000 Line Call-Out M2BC410 A14 B14 or 2 BC 415 A1 4 B14 for 40 durometer material.

2. Sponge filler shall be closed-cell neoprene or rubber conforming to ASTM D 1056, Type 2, Class A, and Grade 3. Compression deflection limited to 25 percent at two to five psi.

H. Waterstops:

1. Requirements:
a. Material: Polyvinyl chloride.
b. Size and type:
1) Centered at construction joints in cast-in-place concrete: 6-inch flat ribbed type.
2) At tank walls to tank wall-footing joints: 9-inch wide with 1-inch diameter hollow bulb ribbed type.
3) Type not allowed: Dumbbell type.
c. Physical characteristics:

Physical Characteristics Test Method Required Results
Specific Gravity ASTM D 792 Not less than 1.3
Hardness ASTM D 2240 70 to 90 Type A Shore
durometer
Tensile Strength ASTM D 638 Not less than 2,000 pounds per square inch
Ultimate Elongation ASTM D 638 Not less than 300 percent Alkali Extraction CRD C 572 7 day weight change between minus 0.1 percent and plus

0.25 percent. Hardness change
within 5 points.

Low Temperature Brittle
Point
ASTM D 746 No sign of cracking or chipping
at minus 35 degrees Fahrenheit
Water Absorption ASTM D 570 24 hours, not more than

0.15 percent
Accelerated Extraction
Tensile
CRD C 527 Not less than 1,600 pounds per
square inch
Stiffness in Flexure ASTM D 747 Not less than 600 pounds per square inch
Tear Resistance ASTM D 624 225 pounds per square inch
Weight Requirements
Thickness 3/8 inch
Center Bulb Outside
Diameter
1 inch nominal
Allowable Tolerances
Width Plus or minus 3/16 inch
Thickness Plus or minus 1/32 inch

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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (BidSetFinal) d. Manufacturers: One of the following or equal:
1) Burke Concrete Accessories, Inc.
2) Greenstreak PVC Waterstops, Sika Corporation.
3) Kirkhill Rubber Company.
4) Williams Products, Inc.
5) Vinylex Corporation.

I. Tank Appurtenances:

1. General:
a. Provide and install all appurtenances as shown on the Drawings and as specified herein.

2. Piping:
a. Inlet: As indicated on the Drawings.
b. Outlet: As indicated on the Drawings,
c. Overflow piping and overflow cone: As indicated on the Drawings.

3. Pipe Supports:
a. Provide as required to adequately support piping under all load and operating conditions.
b. Refer to Section 15061 - Pipe Supports.

4. Ladders
a. Conforming to all requirements of OSHA and as indicated on the Drawings.
1) Provide brackets and fasteners required for support and secure mounting to tank structure.
2) Rungs: solid bar stock.
3) Welds: fillet or full penetration as appropriate to the condition. 4) Fasteners Ladder bolts, concrete anchors, nuts, washers, and flush steel inserts: Type 316 stainless steel.
b. Interior:
1) Materials: Type 304/304L stainless steel.
2) Fall protection: Fall arrest device as specified in the following paragraphs. Material to match that of ladder. Provide removable center rail extension projecting at least 48 inches above top rung of ladder.
c. Fall arrest device consisting of sliding/locking mechanism with safety belt and belt attachment to center climbing rail.
1) Device material: Type 304 stainless steel.
2) Devices: To include following items, all fabricated of device material unless otherwise accepted by the Engineer:
a) Rails: Lengths as required.
b) Brackets: Complete with brackets necessary for attaching rail to ladders.
c) Removable rail extension: 48-inch long.
3) Sleeve assemblies and safety belts: 2.
4) Manufacturers: The following or equal:
a) Norton Company, Air Space Device Division, Cerritos, CA, Saf-T-Climb with SAF-T-NOTCH RAIL and SAF-T-LOCK
SLEEVE.

5. Access hatches (through-roof access):
a. Sizes: Nominal size(s) as indicated on the Drawings.

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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (BidSetFinal) b. Material and construction:
1) Door leaf/leaves: Aluminum diamond pattern plate with reinforcement if required for spans provided.
2) Frame: Minimum 1/4-inch thick, aluminum channel with anchor flange around perimeter.
3) Door hardware: Equip doors with following:
a) Hinges: Minimum 2 heavy forged stainless steel hinges and pins for each leaf.
b) Operators, hold-open and handle: Spring operators and automatic hold-open arm with release handle for each leaf. c) Lock: A Type 316 stainless steel snap lock with fixed handle shall be mounted on the underside of one cover. In addition, the lock shall be a cylinder style with a threaded security cover plug. d) Seals: Leaf seals shall be dust and water tight.
e) Drainage coupling: 1-1/2-inch coupling located in front right corner of frame. Drain shall be installed to drain to the exterior side of the tank, adjust curb height as required.
4) Finish: Manufacturer's standard mill finish.
5) Manufacturers: One of the following or equal:
a) Bilco Co., Type JD-AL.
b) Babcock-Davis Associates, Inc., Type AM or GT.
c) Nystrom, Inc.

6. Grating, Guardrail, and Miscellaneous Fabrications:
a. Refer to Section 05500 - Metal Fabrications.
b. Materials: As indicated on the Drawings.

7. Roof Ventilator:
a. Size: As required to meet the air flow design requirements, but not less than indicated on the Drawings.
b. Materials and construction:
1) Aluminum components.
2) Stainless steel anchors.
3) Flashing shall wrap over the edge of the concrete curb and extend down a minimum of 2 inches.
4) 2-inch aluminum filters.
5) Insect screens.
6) 12-inch tall base.
7) Fiberglass hood insulation.
c. Manufacturers: The following or equal:
1) Greenheck Fabra Hood.
d. Finish: Manufacturer’s standard mill finish.

8. Downspouts and conductor heads:
a. Minimum 22 gauge steel.
b. Galvanized in accordance with ASTM A 653 to G90 designation. c. Fastened to the tank wall with stainless steel anchors. d. Field painted. Color to be selected by Owner.

J. Form ties:

1. General: The requirements of this Section supplement the form ties requirements stated in Section 03102 - Concrete Formwork.

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2. Requirements:
a. Form ties for forming system selected for concrete other than corewall:

Cone-snap tie or flat bar type with waterstops.
b. Form ties for forming system selected for tank corewall: Tapered ties.

K. Wall Forms: As specified in Section 03102 - Concrete Formwork, regular plywood forms may be used for forming of circular walls, as long as there are no straight sections longer than 36 inches at any place around the outside circumference of such walls.

1. Forms shall be designed to resist the construction loads for full height wall pours.

L. Polyethylene sheeting:

1. Minimum 6-mils thick and in accordance with ASTM C 171.

M. Granular leveling base:

1. Material shall meet the requirements for aggregate base course specified in Section 02050 - Soils and Aggregates for Earthwork.

N. Epoxy injection materials: As specified in Section 03931 - Epoxy Injection Systems and the following products:

1. Epoxy materials: Nontoxic to potable water.

2. Grout injection pipes: Provide with positive mechanical shutoff valves.

O. Materials for repair of chipped out concrete areas:

1. Epoxy bonding agent: As specified in Section 03071 - Epoxies.

2.02 SOURCE QUALITY CONTROL
A. Concrete testing:

1. As specified in Section 03300 - Cast-in-Place Concrete.

2.03 COMPLIANCE TESTING
A. Not used.

PART 3 EXECUTION

3.01 SUPERVISION
A. The Tank Contractor shall provide a full-time on-site project manager during all aspects of tank construction.

3.02 INSTALLATION
A. Waterstops:

1. General: The requirements of this Section supersede the waterstop requirements stated in Section 03150 - Concrete Accessories.

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2. Requirements:
a. Install in concrete joints where indicated on the Drawings. b. Connect the ends of the radial waterstop in the wall footing joints to the circumferential waterstop in the wall to wall footing joint and to the circumferential waterstops in the floor to wall-footing joints if they should exist.
c. Provide waterstop in each joint in water-bearing structures, whether indicated on the Drawings or not.
d. Provide waterstops that are continuous.
e. Set accurately to position and line indicated on the Drawings. f. Hold and securely fix edges in position at intervals of not more than 12 inches and secure in manner that they cannot move during placing of concrete.
g. A hog-ring or nail may be driven through both ends of the waterstop to facilitate placing and tying of waterstops to reinforcing steel forms or form-ties.
h. Tank Contractor's option: One of the following:
1) Use waterstop tie wires at not more than 12 inches on centers, near outer ribs, to tie waterstops into position.
2) Use special clips.
i. Waterstop terminations: Terminate 3 inches from top of finished surfaces of walls and slabs unless otherwise specified or indicated on the Drawings.
j. Installation of waterstops:
1) Install so that joints are watertight.
2) Provide field welded polyvinyl chloride waterstop joints such as unions, crosses, ells, and tees.
3) Make all splices to waterstop in accordance with manufacturer's recommendations.
4) Clean waterstops of all concrete, dirt, and foreign matter.

B. Form and accessories removal:

1. General: The requirements of this Section supercede the form and accessories removal requirements stated in Section 03102 - Concrete Formwork.

2. Requirements:
a. Other forms supporting concrete and shoring: Remain in place as follows:
1) Sides of footings, sides of slabs, and columns: 24 hours minimum. 2) Core walls: 12 hours minimum.

C. Neoprene bearing pads:

1. General:
a. Secure bottom surface of pads by positive attachment to structure such that horizontal crawling is prevented.

D. Closed cell neoprene joint fillers and sleeves (“sponge filler”):

1. When joint filler pads or sponge filler sleeves are indicated on the Drawings or specified, place materials in correct position before concrete is placed against them.

2. Holes and joints in pads are to be filled with caulking to prevent passage of mortar or concrete from one side of the joint to the other.

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3.03 FLOOR
A. Prior to placement of the floor reinforcing, a 6-mil polyethylene moisture barrier shall be placed over the leveling base material. Joints in the polyethylene shall be overlapped a minimum of six inches.

B. Prior to placement of the floor concrete, all piping that penetrates the floor shall be set and encased in concrete to the limits indicated on the Drawings. Provide waterstops at the joints between the encasement and the concrete floor slab where indicated on the Drawings.

C. The vertical waterstops between the wall and footing shall be placed and supported to locate the center bulb within the joint as indicated on the Drawings and as required by the Tank Contractor. The waterstop shall be spliced using a thermostatically controlled sealing iron and each splice shall be successfully spark tested prior to encasement in concrete.

D. The floor shall be poured without construction joints, except as otherwise allowed by the Engineer. There shall be no construction joints between the floor and wall footing.

3.04 CONCRETE
A. All concrete shall be conveyed, placed, finished, and cured as specified in Section 03300 - Cast-in-Place Concrete, except as modified herein.

B. Requirements:

1. Cold joints:
a. Cold joints in floors, roof slabs, and wall footings are not allowed. b. Continuously cover joints with new concrete, and thoroughly integrate through vibration, even if it means that horizontal passes of only 6 inches in width can be made until additional concrete and equipment becomes available to permit wider passes in concrete placement.

2. Blockouts or other types of wall openings: Do not provide openings other than those indicated on the Drawings.

C. Weather Limitations:

1. Unless specifically authorized in writing by the Engineer, concrete shall not be placed without special protection during cold weather when the ambient temperature is below 35 degrees Fahrenheit and when the concrete is likely to be subjected to freezing temperatures before initial set has occurred and the concrete strength has reached 500 psi. Concrete shall be protected in accordance with ACI 306.1. The temperature of the concrete shall be maintained in accordance with the requirements of ACI 301 and ACI 306.1. All methods and equipment for heating and for protecting concrete in place shall be subject to the approval of the Engineer.

2. During hot weather, concreting shall be in accordance with the requirements of ACI 305.1.

3. Placement of concrete during periods of low humidity (below 50 percent) shall be avoided when feasible and economically possible, particularly when large surface areas are to be finished. In any event, surfaces exposed to drying wind

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pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (BidSetFinal) shall be covered with polyethylene sheets immediately after finishing, or flooded with water, or shall be water cured continuously from the time the concrete has taken initial set. Curing compounds may be used in conjunction with water curing, provided they are compatible with coatings that may be applied later and if they are degradable.

D. Finishes:

1. Provide manufacturer’s standard finish unless otherwise noted.

2. Coordinate finishes and surface preparation with coatings indicated on the Drawings.

E. Curing:

1. Except where specified herein, concrete curing shall be as specified in Section 03300 - Cast-in-Place Concrete.

2. Requirements:
a. Any concrete surface that is designated to receive paint or upon which any material is to be bonded: No curing compound shall be used. b. Concrete designated to be painted: Water or plastic membrane cure. c. Tank core walls: Water curing.
d. Floor slab:
1) The floor shall be cured by flooding with water and shall remain saturated for a minimum of seven days after placement.
2) Alternatively, the floor slab may be cured with a sprayed-on curing compound and prepared as follows:
a) After the surface is dry to the touch, a 6-mil thick polyethylene sheet shall be carefully taped and sealed to the concrete surface and kept on such surface for as long as possible, but not less than 7 days, to minimize the loss of moisture trapped between the polyethylene sheet and the concrete.
b) Alternatively, heavy curing blankets may be used in lieu of the polyethylene sheet.
e. Roof slab: Water or plastic membrane cure.
f. Other concrete surfaces: Water curing.

F. Testing Cast-in-Place Concrete:

1. All concrete testing shall be in accordance with Section 03300 - Cast-in-Place Concrete, except as noted herein.

2. Testing shall be at the expense of the Tank Contractor, and shall be conducted by an independent testing agency approved by the Engineer.

3.05 SEISMIC CABLES
A. Requirements:

1. Provide seismic cables to connect wall and wall footing.

2. Quantity and spacing of seismic cables shall be as indicated on the Shop Drawings.

3. Where necessary, seismic cables shall be pre-bent before placing units in wall and wall footing.

4. Tie seismic cables to lower horizontal circumferential tie-bar for vertical prestress tendons as indicated on the Drawings.

5. In wall-footing, tie seismic cables to radial footing bars.

Strand-Wound Circular Prestressed Concrete Tank With a Type I Core Wall and Flat Roof 13207-26 8660F10 April 2023
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (BidSetFinal)

3.06 PRESTRESSING
A. Circumferential Prestressing Equipment:

1. The circumferential stressing system shall produce a continuously, electronically (or substantial equivalent) monitored permanent stress or force recording along its full length as it is being applied and the stress variation in any strand at any point around the circumference shall not be greater than +/- 1.5 percent of the ultimate strength of the steel. In addition to this recording, any system which deflects the tensioned prestressing material between the tensioning device and the wall after it has left the tensioning device, shall provide a similar continuously monitored stress or force record along its full length as it is being applied to the wall. These recordings shall show that either before or after deflection that the stress variation in the prestressing material at any point around the circumference shall not be greater than +/- 1.5 percent of the ultimate strength of the steel.

2. Due to prior instances of force measurement inaccuracies and the inherent problems associated with hand-held stressometers, no manually recorded force readings will be accepted. This requirement shall be strictly followed.

3. Any wrapping that does not meet the stress tolerances specified and/or cannot meet the requirements of above will not be accepted and will be removed at the expense of the Tank Contractor. The Tank Contractor is responsible for all costs associated with meeting the specified tolerances.

4. Since intermittent force applications can result in an unequal stress distribution around the wall (due to friction losses), the prestressing system shall be capable of applying a continuous wrapped force at any point around the circumference within the specified tolerances. Circumferential stressing systems based on jack-operated cable or rod-type tendons (such as those placed inside of ducts incorporated in the corewall or placed manually around the exterior of the corewall) will not be allowed.

5. Since wrapping systems which utilize single solid prestressing material will not provide the desired bond between the prestressing material and the shotcrete and since single solid prestressing material will not provide an adequate safety factor against failure, only machine wrapping systems which utilize seven-wire prestressing strandwrapping will be allowed.

B. Circumferential Prestressing Application:

1. All cracks in the core wall and floor slab shall be repaired as specified following the circumferential prestressing of the tank walls.

2. Wrapped strand shall be anchored to the wall at least once for every coil or reel.

3. Permanently anchoring one strand to a previously wrapped strand will not be permitted. Wrapped strand ends shall be joined by suitable splicing methods that shall develop 90 percent of the full strength of the strand.

4. Use of different alloys in the splicing material shall not be permitted.

5. The clear vertical spacing between any two wrapped strands shall be

1.5 strand diameters or 3/8-inch, whichever is larger. A 1/4-inch construction tolerance shall apply to strand spacing, as well as to this minimum spacing requirement.

6. All wrapped strand not meeting the spacing requirements shall be spread by approved methods or shall otherwise be removed.