STANDARD CONCRETE
STORM DRAIN MANHOLE
FILE NO:
STD - 400
NOTES:
CITY OF SANTA ROSA
Scale: NONE
DRAFT MARCH 2025
DWN: EDS
CHK:
APPROVED:
1. 2.
3. 4.
5. 6.
When manholes are installed in unimproved areas,
the top of the cover shall be a min. of 1 foot above
adjacent finished grade.
Min. of one 3" grade adjustment ring. Max. height of
grade adjustment ring=20". Alternatively, contractor
may cast grade adjustment rings in place.
Set all sections in 1:3 mortar bed. Wet both tongue
and groove before applying mortar. Wipe inside of
joint smooth and plaster outside of joint with 1/2"
layer of mortar. Ram-nek gaskets or approved equal
may be used instead of mortar.
Cone section (taper) may be concentric or eccentric
unless otherwise specified by the Engineer.
All precast manhole sections per ASTM C478.
Class "A" conc. collar shall be 2" below top of
manhole cover in improved surface areas.
Poured-in-place base shall be poured full
thickness to undisturbed sides of
excavation, sloped at 1:1 or shall be formed.
Precast base shall be from City Engineer's
approved list and be placed on 6" thick 3/4"
drain rock sub-base installed against
undisturbed earth.
7. APPROVED 48" & 60" PRECAST
STORM DRAIN MANHOLE
COMPONENTS
See Engineer's approved list
Grout all voids between
manhole and pipes and seal
joints with 1:3 mortar.
See note 3
For manhole cover and frame
see STD. 512. Cover to be
Labeled "STORM DRAIN".
Pick holes may be open or closed
UNIMPROVED SURFACE
IMPROVED SURFACE
Asphalt
concrete
Finished grade
Level with 1:3
mortar. 1" min.
Concrete collar.
See note 6.
24" min.
8"
min.
8"
min.
12"
min.
48" OR 60" I.D.
PRECAST BASE
POURED IN PLACE
(Both acceptable for unimproved and improved areas.)
Form smooth flow
channel in base.
Use impression ring to
form keyway for cone or
additional barrel section.
6" minimum if
poured in place.
Class 'A" concrete
base (See note 7).
See note 7
Concrete collar required
per STD-410.
Attachment 4
PRECAST CONCRETE STORM
DRAIN MANHOLE REDUCER
SLABS
FILE NO:
STD - 401
NOTES:
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
1. 2.
3. 4.
Reducer slab shall be designed to withstand H20
loading and conform to ASTM C478.
All inside joints to be grouted smooth.
Class A concrete collar shall be poured to 2" below
finished grade.
Reducers shall be concentric. Eccentric reducers can
be used if it would place the opening in a more
desirable location or improve access.
For detail and specifications of
barrel section and base see
City of Santa Rosa STD. 400
APPROVED 48" & 60" MANHOLE REDUCER SLAB
See Engineer's approved list
48" OR 60" I.D.
Finish grade
SECTION A-A
24"
Concrete collar. See
STD. 400
Minimum (1) 3" grade
adjustment ring.
See note 1
See STD. 400
Level with 1:3
mortar, 1" min.
Asphalt Concrete
Standard manhole frame and cover,
see STD. 512. Cover to be labeled
"STORM DRAIN". as noted on this
sheet. Pick holes may be open or
closed. to be open.
8"
8"
#5 lifting eye (TOTAL 2). Lifting eye to
be located at balance point
A
A
Grid pattern
STORM DRAIN
"CITY OF SANTA ROSA"
Standard 24" heavy duty, non
rocking manhole frame and
cover.
DRAFT MARCH 2025
TYPE II CATCH BASIN
FILE NO:
STD - 402A
NOTES:
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
1. 2.
3. 4.
5. Catch basin box, and lid if not a
monolithic pour, shall be constructed
to withstand H20 loading. Cover is
not traffic rated.
Concrete shall have a compressive
strength of 4000 psi in 28 days.
Wall thickness shall be 6" unless
depth is greater than 8', then wall
thickness shall be 8".
Install label per City STD. 409 if cover
is not a cast iron cover with the decal
incorporated into the cast iron.
A concrete collar per STD-410 is
required when a pre-cast lid is placed
on a pre-cast box.
APPROVED TYPE II CATCH BASINS
See Engineer's approved list
SECTION B-B
B
SECTION A-A
48"
48"
48"
6"
LIP OF GUTTER
BACK OF CURB
24"
FACE OF CURB
B
A
A
PLAN
TOP OF CURB
GUTTER FLOW LINE
6"
8"
32"
8"
24"
MIN.
6" MIN.
6" MIN.
SEE NOTE
3 GUTTER FLOW LINE
FACE OF CURB
PRECAST CATCH BASIN
COVER. SEE STD-405
BACKFILL
SEAL JOINT
WITH GROUT
6" MIN. 3/4" DRAIN ROCK
INSTALLED AGAINST
UNDISTURBED EARTH.
CONCRETE
COLLAR
REQUIRED PER
STD-410
INSTALL WEEP
HOLE
SEE STD-402D
SEE
NOTE 5
DRAFT MARCH 2025
SEE
NOTE 5
TYPE II CATCH BASIN
FILE NO:
STD - 402B
NOTES:
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
1. Include total of two open #5
lifting eyes to be located at
balance point. Lifting eyes shall
not be blocked by the rim and
shall pass through width of lid.
When "DRAINS TO CREEK"
modification is not available,
affix label per STD-409.
CATCH BASIN COVER
48"
48"
6"
LIP OF GUTTER
BACK OF CURB
24"
FACE OF CURB
PLAN VIEW
LIFTING EYE,
SEE NOTE 1.
24"
28"
25-1/4"
25-1/2"
26-1/2"
2"
1/2"
1/2"
SECTION B-B
B
B
NON TRAFFIC
CAST IRON
LIFTING EYE,
SEE NOTE 1.
2-#4 REBARS (TYP)
T
T
T=6" OR 8", SEE
NOTE 3 ON
STD-402A
CORNER
DOWEL
4"
4"
4"
2"
2"
#4 DEF BARS
(SPACED AS
SHOWN)
48"
4"X4" - 6 AWG MESH MAY
BE USED IN LIEU OF
REBARS. (SEE NOTES ON
SD-1-4)
CORNER DOWEL (SEE
DETAIL ON STD-402C)
CORNER
DOWEL
2"
ANCHOR
ANCHOR
DRAFT MARCH 2025
A
A
SEE NOTE 2
2. TYPE II CATCH BASIN
FILE NO:
STD - 402C
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
CORNER DOWEL DETAIL
SECTION A-A
(FROM STD-402B)
#4 BAR
8"
90 90
2"
ROADWAY OR CONC. GUTTER
SUBGRADE OR BASE
INSTALL WEEP HOLE
3" DIA.
INSTALL GUARD ROD
T=R
REINFORCE SIDE WALLS WITH
#4 BARS AT 12" EACH
DIRECTION
PIPE DIA + 12"
(3'-0" MIN)
DOWEL PLACED AT EACH CORNER
(SEE DETAIL BELOW)
SEE STD-402D
1/4" R
CAST IRON FRAME AND
COVER (SEE STD-402B)
3"
1-3/4"
1-1/2"
10 GA. X 2-3/4" GALV. RING
T
T
DRAFT MARCH 2025
NOTES:
1. 2.
Floor shall be poured and approved
prior to pouring of the top.
See STD-402E for additional notes.
TYPE II CATCH BASIN
FILE NO:
STD - 402D
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
THROAT OPENING DETAIL
NOTES:
1. 2.
All metal parts shall be hot dipped
galvanized after fabrication.
All galvanized damaged by welding shall
receive two coats of aluminum paint.
R=6" or 8"
Gutter flow
line
Batter to conform to adjoining curb
3-1/2" X 2" X 1/4"
galvanized steel nosing
angle
1/2" dia. anchor at
each end
Guard
rod
ALL AROUND
Sidewalk slope
1/4" R
Curb line
1-1/2"
#4
6 1
Curb face
5"
DRAFT MARCH 2025
TYPE II CATCH BASIN
FILE NO:
STD - 402E
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
NOTES:
1. 2.
3. 4.
5. 6.
7. 8.
9. 10.
11. 12.
Connection pipes may be placed in any position around the walls provided the point in the proper direction and the position is otherwise consistent with the improvement plan.
Curvature of the lip and sidewalls at gutter opening shall be formed by curved forms and shall not be made by plastering.
Wall thickness (T)
Depth (H) shall be a maximum of 6 feet. For depths between 6 feet to 12 feet, catch basin shall be on a manhole base, see STD-400C. For depths greater than 12 feet deep require a special design by a registered civil engineer.
Floor of basin shall be troweled and re-troweled to produce a hard, polished surface of maximum density and smoothness. Slope of floor parallel with curb shall be 1 to 12 unless otherwise specified.
Manhole shall be placed as shown on improvement plans.
Outlet pipe shall be trimmed to the final shape and length before concrete is poured.
Reinforcing steel shall be #4 round deformed bars, or wire mesh as indicated. If wire mesh is used, additional 4"X4" 6 AWG mesh shall be placed around the inlet opening @45 degrees to main mesh reinforcing.
Concrete shall meet the requirements of section 90-2 "Minor Concrete" of State Standard Specification.
Steps: Steps are required as follows:
Surface of all exposed concrete in basin shall conform in slope, grade, color, finish, and scoring to existing or proposed curb and walk adjacent to the basin.
General Notes:
T = 6 inches if H is 8 feet or less
T = 8 inches if H exceeds 8 feet
If H is 3.5 feet or less, no steps are required.
If H is more than 3.5 feet, but no more than 4 feet, install 1 step 12 inches above floor of basin If H is more than 4 feet, isntall steps 12 inches apart, with the top step 6 inches below the suface of the basin and 12 inches above the floor.
All steps shall be 6 to 7 inches from the wall.
3/4 inch galvanized steel or polypropylene plastic (Caltrans D72). -
-
-
-
-
-
-
Catch basin details shown are for cast-in-place and/or when not included on the Engineer's List of approved items.
-
DRAFT MARCH 2025
TYPE I CATCH BASIN
FILE NO:
STD - 403
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
SECTION A-A
APPROVED TYPE I CATCH BASINS
See Engineer's approved list
NOTES:
1. 2.
3. 4.
5. Concrete shall have a compressive
strength of 4000 psi in 28 days.
Grate and nosing angle shall be hot
dipped galvanized after fabrication
per ASTM A-123
Grate frames shall be installed tight
against gutter flowline
Catch basin box and grate shall be
constructed to withstand H20
loading.
Install label per City STD-409.
ONLY TO BE USED WHERE SPECIFICALLY APPROVED BY VARIANCE 6" MIN. 3/4" DRAIN ROCK
INSTALLED AGAINST
UNDISTURBED EARTH
6" MIN.
5" MIN.
30"
SEAL JOINT
WITH GROUT
SECTION B-B
TOP OF CURB
GUTTER FLOW LINE
6"
8"
48"
PLAN
A
A
LIP OF GUTTER
BACK OF CURB
BICYCLE PROOF GRATE
FACE OF CURB
B
6"
24"
B
48"
48"
24"
TOP TO BE PRECAST OR POURED
IN PLACE USING FIBERGLASS
INLET LINER.
CONCRETE COLLAR
REQUIRED PER STD-410
DRAFT MARCH 2025
STORM DRAIN GALLERY
FILE NO:
STD - 404
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
TYPICAL SECTION INSTALLED
APPROVED STORMD RAIN GALLERY FORM
See Engineer's approved list
NOTES:
1. 2.
3. Nosing assembly shall be hot dipped
galvanized after fabrication per ASTM A-123.
Concrete shall be class A.
Install label per City STD-409
ISOMETRIC VIEW
4'
4'
6' OR 12'
GALLERY
DEPRESS GUTTER
FLOWLINE (BOTH
SIDES)
BLOCKOUT OPENING IN
CATCH BASIN TO DRAIN
GALLERY
PRECAST CATCH BASIN WITH GALLERY
(RIGHT OR LEFT). SEE STDS-402, 405 & 409
GUTTER
TOP OF CURB
8" MIN.
GUTTER
TOP OF CURB
ANCHORS
FIBERGLASS LINER
WOVEN WIRE REINFORCING
1-1/2" NOTCH
3-1/2"x3-1/2"x1/4"
ANGLE NOSING
8"
6"
5" MIN.
DRAFT MARCH 2025
PRECAST CATCH BASIN COVER
FILE NO:
STD - 405
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
APPROVED PRECAST CATCH BASIN COVERS
See Engineer's approved list
NOTES:
1. 2.
3. 4.
5. 6.
Concrete shall have a compressive strength
of 4000 PSI at 28 days
Nosing angle shall be galvanized in
accordance with ASTM specification A-123.
Exposed concrete surface shall have broom
finish.
Cast iron shall conform to ASTM 48-30.
Apply label per City STD-409.
Frame ring inside diameter to be 5/16" to
3/8" greater than lid ring outside diameter.
ISOMETRIC
Precast lid 26-3/4" X 2"
with cast iron lid ring.
SECTION A-A
ELEVATION
Cast iron
frame ring
3-1/2" X 2-1/2" X
1/4" Galv. steel
nose angle.
5" radius fillet
Gutter flow
line
Cast iron
frame ring
See note 6.
Cast iron lid
ring
2-5/8"
32"
24"
5"
16-1/2"
See
STD-402B
5"
48"
A
A
Non traffic-cast iron lid
25-1/2". See STD-402B
See STD-402B
DRAFT MARCH 2025
3" SIDEWALK DRAIN
FILE NO:
STD - 406A
NOTES:
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
1. 2.
3. 4.
5. 6.
Wire mesh shall be full width of sidewalk minus 2".
Length of wire mesh shall, at a minimum, equal the
width and be centered over the pipe.
On-site drainage and location of curb outlets shall be
by owner to the satisfaction of the City Engineer.
Drain pipe shall be installed so that the top of pipe is 2-1/2" (min.) below finished grade at back of sidewalk.
Sidewalk shall be removed to the nearest scoremark.
If sidewalk and gutter are not contiguous, curb may be
cored or curb and gutter removed and replaced a
minimum of one foot on each side of the drain pipe.
Dowel new gutter to existing curb and gutter with (2)
12" #4 rebars, place one dowel in curb and one in
gutter pan using epoxy.
If sidewalk and gutter are contiguous, pour monolithic
with wire fabric extending into curb.
Score mark
SECTION B-B
(for one 3" pipe)
2-1/2"
min.
SECTION A-A
Gutter flow line
4" x 4" 10/10
woven wire mesh.
See note 6.
PLAN
4" x 4" 10/10
woven wire mesh.
See note 1.
3" SCH. 40 PVC
A
A
B
B
GUTTER
CURB
SIDEWALK (VARIES)
PER STD-230
SIDEWALK DRAIN PRIVATELY OWNED
AND MAINTAINED
DRAFT MARCH 2025
3" X 12-1/2" CAST IRON
SIDEWALK DRAIN
FILE NO:
STD - 406B
NOTES:
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
1. 2.
3. 4.
5. 6.
Wire mesh shall be full width of sidewalk minus 2".
Length of wire mesh shall, at a minimum, equal the
width and be centered over the pipe.
On-site drainage and location of curb outlets shall be
by owner to the satisfaction of the City Engineer.
Drain pipe shall be installed so that the top of pipe is 2-1/2" (min.) below finished grade at back of sidewalk.
Sidewalk shall be removed to the nearest scoremark.
If sidewalk and gutter are not contiguous, curb may be
cored or curb and gutter removed and replaced a
minimum of one foot on each side of the drain pipe.
Dowel new gutter to existing curb and gutter with (2)
12" #4 rebars, place one dowel in curb and one in
gutter pan using epoxy.
If sidewalk and gutter are contiguous, pour monolithic
with wire fabric extending into curb.
3" x 12-1/2" cast
iron drain
SECTION B-B
2-1/2"
min.
SECTION A-A
Flow line of pipe set
at gutter flow line
4" x 4" 10/10
woven wire mesh.
See note 6.
PLAN
4" x 4" 10/10
woven wire mesh.
See note 1.
3" x 12-1/2"
cast iron drain
A
A
B
B
GUTTER
CURB
SIDEWALK (VARIES)
PER STD-230
SIDEWALK DRAIN PRIVATELY OWNED
AND MAINTAINED
24"
3"
CAST IRON SIDEWALK DRAIN
See Engineer's Approved List
DRAFT MARCH 2025
TRENCH DRAIN
AND GRATE
FILE NO:
STD - 406C
CITY OF SANTA ROSA
Scale: NONE
DRAFT MARCH 2025
DWN: EDS
CHK:
APPROVED:
SECTION A-A
ISOMETRIC VIEW
3"
12" MIN.
6"
1"
14" x 6"
trench pan
lock bar
penta-head
security bolt
new concrete
slab
steel
anchor
LIP OF
GUTTER
GUTTER
FLOW LINE
BACK OF
CURB
CURB FACE
DECORATIVE
TRENCH GRATE
A
A
SIDEWALK
LOOSE ROCK RIP-RAP
STORM DRAIN OUTLET
FILE NO:
STD - 407A
NOTES:
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
1. 2.
CMP shall conform with Section 66-3
of the Standard Specifications.
HDPE pipe shall conform with Section
64 of the Standard Specification for
type S pipe.
SECTION A-A
LOOSE ROCK
RIP-RAP COLLAR
WITH 4" EARTH
COVERING TO
FILL VOIDS
STORM DRAIN OUTLET
ELEVATION
SLOPE PROTECTION
SLOPE
PROTECTION
TOP OF BANK
2' EACH SIDE OF
PIPE MINIMUM
DITCH FLOWLINE
Y
PIPE DIAMETER + 4 FT
MINIMUM WIDTH
18" MINIMUM
A
A
18" THICK LOOSE ROCK
COLLAR W/ 4" EARTH
COVER
CUT PIPE SLOPE TO
CONFORM WITH
DITCH SLIDE SLOPE
DITCH FLOW LINE
18"
MIN.
WHEN D < 24", Y=2'
WHEN D > 24", Y=1'
D + Y +2'
RCP
2'
Y
D
(2) #4 BARS
CONCRETE COLLAR
FOR DISSIMILAR
MATERIALS
12" MIN.
HDPE, RCP
OR CIPP
6" MIN.
/INLET
DRAFT MARCH 2025
LOOSE ROCK RIP-RAP
STORM DRAIN OUTLET
FILE NO:
STD - 407B
ROCK SLOPE PROTECTION
MATERIALS
Rocks shall be angular and well graded from an average diameter of four(4) inches to an average diameter of fifteen (15) inches with approximately fifty (50) percent by weight smaller than nine (9) inches in average diameter. Not more than ten (10) percent of the rock rip rap by weight shall be less than four (4) inches average diameter. Not more than ten (10) percent of the rock riprap by weight shall be greater than fifteen (15) inches in average diameter and none shall exceed an average diameter of twenty 20" inches.
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
SLOPE PROTECTION
STORM DRAIN INLET
SECTION A-A
STORM DRAIN INLET
PLAN VIEW
/INLET
EDGE OF ASPHALT
EXISTING DRAINAGE
CULVERT PER
COUNTY STD-820
DRIVEWAY FOR
UNIMPROVED STREET
PER STD-252
18" THICK LOOSE ROCK
COLLAR W/ 4" EARTH
COVER
2'
DRIVEWAY
DRAINAGE CULVERT
A
A
DRAFT MARCH 2025
PRECAST SIDE OPENING
FIELD DRAIN
FILE NO:
STD - 408
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
ISOMETRIC VIEW
PRECAST SIDE OPENING FIELD DRAIN
See Engineer's approved list
NOTES:
1. 2.
Field drain box shall be constructed
to withstand H20 loading.
Concrete shall have a compressive
strength of 4000 psi in 28 days
SECTION A-A
GROUT ALL VOIDS
BETWEEN PIPE AND
BOX
24"
SQUARE
(MINIMUM)
5" MIN.
1/4" GALVANIZED
CHECKER PLATE
COVER
SECURE WITH ANCHOR BOLTS
IN EACH CORNER
CONCRETE
COLLAR PER
STD-410
SIDE OPENINGS AS
NEEDED
SET TO FLOWLINE OF DIT
9"
MIN.
20"
MIN.
A
A
DRAFT MARCH 2025
STORM DRAIN LABELS
FILE NO:
STD - 409
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
APPROVED STORM DRAIN LABELS
See Engineer's approved list
NOTES:
1. 2.
3. Affix decal to center of catch basin lid
cover ONLY if catch basin is not part of the
sidewalk and cover is not cast iron.
If the catch basin lid cover is cast iron AND
the catch basin is not part of the sidewalk,
affix label in this location, oriented to be
read from the street aligned with the top
of curb.
Affix label on the curb face right of the
catch basin if catch basin is part of the
sidewalk. The left side may be used if the
right side curb is damaged or painted.
SEE NOTE 1
2" - 3"
SEE NOTE 2
SEE NOTE 3
2" - 3"
1" - 2"
5"
DRAFT MARCH 2025
REINFORCED CONCRETE
PIPE COLLAR
FILE NO:
STD - 410
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
SECTION A-A
PLAN
A
A
#4 REBARS AT 12"
CENTERS
#4 REBARS EQUALLY
SPACED
I.D.
2" (TYP)
I.D./4 (6" MIN)
PIPE O.D.
6"
6"
6"
6"
O.D. + 12"
O.D. + 12"
MIN 3000 PSI
@ 28 DAYS
CONCRETE
2" MIN CLEARANCE BETWEEN
OUTSIDE OF PIPE AND STEEL
DRAFT MARCH 2025
REINFORCED CONCRETE
STUB CAP
FILE NO:
STD - 411
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
SECTION A-A
PLAN
A
A
#4 REBARS AT 12"
CENTERS
#4 REBARS
EQUALLY SPACED
2" (TYP)
I.D./4 (6" MIN)
PIPE O.D.
6"
6"
6"
6"
O.D. + 12"
O.D. + 12"
MIN 3000 PSI
@ 28 DAYS
CONCRETE
2" MIN CLEARANCE BETWEEN
OUTSIDE OF PIPE AND STEEL
NOTES:
1. All reinforced concrete stub caps to be
inspected by City during construction
and before being covered.
PLYWOOD TO BE CUT TO INSIDE
DIAMETER TO SUPPORT CONCRETE
WORK AND TO BE REMOVED BEFORE
CCTV AND CITY ACCEPTANCE
#4 REBAR ONLY LOCATED AS
OUTER SET OF REBAR FROM
END OF PIPE
#4 REBAR ONLY LOCATED AS
OUTER SET OF REBAR FROM
END OF PIPE
DRAFT MARCH 2025
CONCRETE BEDDING CAP
FILE NO:
STD - 412
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
B
#4 REBARS @ 12"
TRANVERSE STEEL
NOTES:
1. 2.
3. 4.
All concrete for concrete bedding cap shall be Claass V concrete.
Concrete bedding cap required when a storm drain pipe encroaches in a roadway structural section or is less than three (3) feet below finish grade.
Use reinforcing steel when designated on the plans.
Unless otherwise specified, concrete bedding cap shall be paid for as part of the construction of pipe sewer or conduits.
6"
MIN.
6"
MIN.
CONCRETE
BEDDING MATERIAL
PER CITY STD-215
B/4 OR 4" MIN.
B/4 OR 4" MIN.
B/2
DRAFT MARCH 2025
STREET BIORETENTION
BULB-OUT, MID-BLOCK,
CORNER CROSSING
FILE NO:
STD - 413
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
NOTES:
1. This standard detail assumes gradual longitudinal and cross slopes of the roadway. Steeper slopes in either direction will impact conveyance and elevation differences between the facility and adjacent roadway , curb, and sidewalk surfaces.
Retrofit projects will face greater constraints than new construction. Site specific design is critical to avoid grade conflicts and maximizing ponding area. Grading plans that provide spot elevations across the entire facility and along adjacent surfaces are necessary.
REMOVE AND REPLACE EXISTING CURB
& GUTTER WITH RAISED DEEP CURB
LENGTH OF FACILITY
SIDEWALK
2" DROP TO
COBBLE
SEE NOTE 1
CURB CUT
INLET, SEE
STD-414
BIORETENTION
AREA
CURB CUT
OUTLET, SEE
STD-414
CURB CUT OUTLET,
SEE STD-414
CURB AND GUTTER
TO PUBLIC STORM
DRAIN SYSTEM
page 1 of 2
PLAN VIEW
BIORETENTION
AREA
HIGH-FLOW
BYPASS INLET
A
A
SECTION A-A
EDGE OF GUTTER
GUTTER PAN
2" DROP TO
COBBLE
BIORETENTION
AREA
BIORETENTION
AREA
HIGH-FLOW
BYPASS INLET
GUTTER PAN
DRAFT MARCH 2025
STREET BIORETENTION
BULB-OUT, MID-BLOCK,
CORNER CROSSING
FILE NO:
STD - 413
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
NOTES CONTINUED:
2. 3.
4. For the treatment of sidewalk runoff, a trench grate may be installed at the edge of the sidewalk transition to the curb ramp, as needed. The trench grate shall be Americans with Disabilities Act (ADA) compliant and heel proof.
Curb cut inlets to be located as governed by the grading design so as to prevent flows being concentrated toward the ramp to gutter transition location.
The number of curb cut inlets needed shall be governed by the inlet capacity and flooded width calculations presented in the Drainage Report.
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PLAN VIEW
BIORETENTION
AREA
CURB CUT INLET,
SEE STD-414
TO PUBLIC STORM
DRAIN SYSTEM
HIGH-FLOW
BYPASS INLET
EDGE OF GUTTER
BIORETENTION
AREA
CURB AND GUTTER
CURB CUT INLET,
TYPICAL SEE
STD-414
CURB RAMP PER
CALTRANS
STANDARD A88A
SIDEWALK
SIDEWALK
PROPERTY
LINE
CROSSWALK
CROSSWALK
PARKING
PARKING
0" CURB
HEIGHT
FULL HEIGHT
CURB
SEE NOTE 2
DRAFT MARCH 2025
CURB CUT INLET/OUTLET
FOR PLANTERS
FILE NO:
STD - 414
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
NOTES:
1. 2.
3. 4.
5. For use with stormwater facilities with flat bottoms.
Provide spot elevations on plans for finished grade, gutter inlet, top of curb, lip of gutter, etc.
Curb and wall details may be modified by Civil and
Geotechnical Engineer subject to approval by the City
Engineer.
Curb height may be reduced to 4" where adjacent to a
sidewalk.
If rock slope protection is used, calculations for the sizing based on flow velocities is required in the drainage report and Stormwater Low-impact Development Report, as
applicable.
DEPRESS GUTTER
2" AT OPENING,
GUTTER INLET
ELEVATION
DEPRESS GUTTER
2" AT OPENING,
GUTTER INLET
ELEVATION
4" THICK CONCRETE
SPLASH PAD
R=6"
CURB AND
GUTTER
PERSPECTIVE VIEW
PLAN VIEW
6"
8"
6"
CURB
12"-18"
1'-6"
4'-6"
12"
CURB
A
A
SECTION A-A
STREET
6"
6"
6"
1'-6"
4"-6" MIN.
1'-6"
R=3/4" TYP.
DEPRESS GUTTER
2" AT OPENING
R=3/4" TYP.
4" THICK CONCRETE
SPLASH PAD AT FACILITY
FINISHED ELEVATION, OR
ROCK SLOPE PROTECTION,
SEE NOTE 5.
FINISHED
ELEVATION
DRAFT MARCH 2025
STORM DRAIN UNDER
CURB OR PLANTER
FILE NO:
STD - 415
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
PLAN VIEW
PARKING/BIKE
LANE
SECTION B-B
TRAVEL LANE
CURB AND GUTTER
PLANTER STRIP
SIDEWALK
PUBILIC UTILITY
EASEMENT
CORRIDOR
13'
LID BMP
REVERSE CURB DRAIN OR
TRENCH DRAIN W/ HEEL
PROOF GRATE. SEE NOTE 2.
DRAINAGE INLET.
SEE NOTE 3.
REVERSE SIDEWALK
SLOPE. SEE NOTE 1.
2%
MAX
PUBLIC STORM
DRAIN MAIN
ROADWAY
PLANTER
STRIP
SDWLK
PUE
CORRIDOR
LID BMP
2% MAX
PUBLIC STORM DRAIN
SEE NOTE 2
SEE NOTE 3
ROADWAY
PLANTER
STRIP
SDWLK
PUE
CORRIDOR
LID BMP
2% MAX
PUBLIC STORM DRAIN
SEE NOTE 1
DRAINAGE INLET
page 1 of 2
JOINT TRENCH
JOINT TRENCH
A
A
B
B
SECTION A-A
DRAFT MARCH 2025
STORM DRAIN UNDER
CURB OR PLANTER
FILE NO:
STD - 415
CITY OF SANTA ROSA
Scale: NONE
DWN: EDS
CHK:
APPROVED:
NOTES:
1. 2.
3. 4.
5. 6.
7. 8.
9. 10.
For the treatment of replaced or proposed sidewalk behind the planter strip or contiguous sidewalk, the sidewalk may be reversed and runoff graded to or conveyed to a LID BMP. This option does not treat the roadway.
Reverse curb drain per STD-406A/B or trench drain with a heel proof grate.
Sidewalk runoff captured within the planter strip then conveyed to the LID BMP via SCH. 40 PVC.
Only sidewalk treatment is provided
No rebar or reinforcement shall be placed over public storm drain facilities.
No improvements within the sidewalk, planter strip, or right-of-way shall intrude within the pipe or pipe bedding.
No portion of any structure or LID BMP shall extend within, over, under, or upon any public utility easement unless otherwise approved by the City Engineer.
Utility services and laterals may run through a public utility easement perpendicularly, but private utilities may not run longitudinally within the PUE.
A curb cut may be added to treat the roadway.
Prior to utility crossings and connections over or under the existing public storm drain, the contractor shall pothole and ensure no conflicts occur with the existing storm drain facilities.
The contractor shall be responsible for repairing, damage, or deterioration occurring to the existing public storm drain as a direct result of construction activity related to the installation of the improvements.
page 2 of 2
DRAFT MARCH 2025