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Surface Water Standard Plan Notes and Example of Construction
Sequence
Surface Water Standard Plan Notes
1. These notes shall appear on projects for the surface water utility.
2. Before any construction or development activity occurs, a pre -construction meeting
must be held between the City of Renton plan review section and the applicant.
3, All design and construction shall be in accordance with the Renton Municipal Code
(RMC), the latest edition of the Standard Specifications for Road, Bridge and
Municipal Construction prepared by WSDOT and the American Public Works
Association (APWA), as amended by the City of Renton Public Works Department. ft
shall be the sole responsibility of the applicant and the professional civil engineer to
correct any error, omission or variation from the above requirements found in this
plans. all corrections shall be at no additional cast to the City.
4. Approval of this road, grading, parking and drainage plan does not constitute an
approval of any other construction (e.g. domestic water conveyance, sewer
conveyance, gas, electrical. etc.)The surface water drainage system shall be
constructed according to the approved plans, which are on file in with the City. Any
deviation from the approved plans will require written approval from the City of
Renton Public Works Department, Surface Water Utility Section.
5. A copy of these approved plans must be on the jab site whenever construction is in
progress.
6. Grading activities (site alteration) are limited to the hours of 7 a.m. to 7 p.m.
Monday through Saturday and no work on Sunday is allowed, unless otherwise
approved with a written decision by the City of Renton.
7. It shall be the applicant's/contractor's responsibility to obtain all construction
easements necessary before initiating off -site work. Easements require City review
and approval prior to construction.
8. Franchised utilities or other installations that are not shown on these approved plans
shall not be constructed unless an approved set of plans that meet all requirements
of Chapter 4 of the Surface Water Design Manual are submitted to the City of
Renton.
9. Datum shall be NAVD 88 unless otherwise approved by the City of Renton.
Reference benchmark and elevations are noted on the plans.
10. Any dewatering system necessary for the construction of stormwater facilities must
be submitted to the City for review and approval.
11. All utility trenches and roadway subgrade shall be backfil[ed and compacted to
95 percent density, standard proctor.
12. Open cutting of existing roadways for non -franchised utility or storm drainage work
is not allowed unless specifically approved by the City of Renton and noted on these
approved plans. Any open cut shall be restored in accordance with the City of
Renton trench restoration standards.
13. All sedirnentation/erosion facilities must be in operation prior to clearing and building
Construction, and they must be satisfactorily maintained until construction is
completed and the potential for on -site erosion has passed.
14. All retention/detention facilities must be installed af1d in operatlon prior to or in
conjunction with all construction activity unless otherwise approved by the Public
Works Department, Surface Water Utility Section.
15. All pipe and appurtenances shall be laid on a properly prepared foundation in
accordance with the current State of Washington Standard Specification for Road
and Bridge Construction. This shall include necessary leveling of the trench bottom
or the top of the foundation material, as well as placement and compaction of
required bedding material, to uniform grade s0 that the entire length of the pipe will
be supported on a uniformly dense, unyielding base. All pipe bedding shall be APWA
Class "C", with the exception of PVC pipe.
16. Steel pipe shall be aluminized, or galvanized with asphalt treatment #1 or better
inside and outs[de.
17. All drainage structures, such as catch basins and manholes shall have so[id locking
lids. All drainage structures associated with a permanent retention/detention facility
shall have solid locking lids.
18. Building and other structures shall be placed in accordance with Table 4.1 Easement
Widths and Building Setbacks Lines.
19. All catch basin grates shall be depressed 0.10 feet below pavement level.
20. All driveway culverts located within City of Renton right-of-way shall be of sufficient
length to provide a minimum 3:1 slope from the edge of the driveway to the bottom
of the ditch. Rock for erasion protection of roadside ditches, where required, shall be
of sound quarry rack placed to a depth of one (1) foot and must meet the following
specifications:
4 - 8 inch rock / 40 - 7011/o passing;
2 - 4 inch rock / 30 - 40% passing; and
less than 2 inch rock / 10 - 201/o passing.
21. All building downspouts and footing drains shall be connected to the storm drainage
system, unless approved by the City plan reviewer or Surface Water Utility Section.
An accurately dimensioned, certified as -built drawing of this drainage system will be
submitted to the City upon completion.
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0.250
3.000
NOTES:
1. ALL STROKES TO
BE 3" WIDE.
2. PROVIDE TWO
COATS OF PAINT.
3. BLUE BACKGROUND
WITH WHITE SYMBOL.
4. LOCATE SYMBOL AT
CENTER OF STALL
WHERE SHOWN ON
SITE PLAN.
5. ONE SYMBOL FOR
EACH HANDICAP
PARKING SPACE.
0.250
HANDICAP SYMBOL
NOT TO SCALE
CONSTRUCTION NOTES AND DETAILS
22. Drainage outlets (stub -outs) shall be provided for each individual lot, except for
those lots approved for infiltration by the City. Stub -outs shall conform to the
following:
a. Each outlet shall be suitably located at the lowest elevation on the lot, so as to
service all future roof downspouts and footing drains, driveways, yard drains,
and any other surface or subsurface drains necessary to render the lots suitable
for their intended use. Each outlet shall have free -flowing, positive drainage to
an approved stormwater conveyance system or to an approved outfall location.
b. Outlets on each lot shall be located with a five -foot -high, 2" x 4" stake marked
"storm" or "drain". The stub -out shall extend above surface level, be Visible, and
be secured to the stake.
c. Pipe material shall conform to underdrain specifications described in Chapter 4 of
the Surface Water Design Manual and, if non-metallic, the pipe shall be placed in
a trench with a tracing wire above or other acceptable detection.
d. Private drainage easements are required for drainage systems designed to
convey flows through individual lots.
e. The applicant/contractor is responsible for coordinating the locations of all stub -
out conveyance lines with respect to other utilities (e.g. power, gas, telephone,
television).
f. All individual stub -outs shall be privately owned and maintained by the lot home
owner.
g. Storm drainage pipe systems shall not penetrate building foundations, except for
sump pump discharge lines used to drain crawl spaces, provided the sump pump
system includes backflow prevention or a check valve.
23. All disturbed pervious areas (compacted, graded, landscaped, etc.) of the
development site must demonstrate one of the following: The existing duff layer
shall be staged and redistributed to maintain the moisture capacity of the soil, OR;
Amended soil shall be added to maintain the moisture capacity.
24. Proof of liability insurance shall be submitted to the City prior to construction permit
Issuance.
25. Issuance of the building or construction permits by the City of Renton does not
relieve the owner of the continuing legal obligation and/or liability connected with
storm surface water disposition. Further, the City of Renton does not accept any
obligation for the proper functioning and maintenance of the system provided during
construction.
26. The Contractor shall be responsible for providing adequate safeguard, safety
devices, protective equipment, flaggers, and any other needed actions to protect the
life, health, and safety of the public, and to protect property in connection with the
performance of work. Any work within the traveled right-of-way that may interrupt
normal traffic flow shall require a traffic control plan approve by the Public Works
Department, Transportation Systems Division. Ail sections of the WSDOT Standard
Specifications 1-07-23 Traffic Control shall apply.
27. Project located within the aquifer protection area (APA) shall comply with Special
Requirement #6 of the Surface Water Design Manual and Aquifer Protection
Regulations (RMC 4-3-050).
7" COMPACTED DEPTH
HMA PAVEMENT CL 1/2"
6" COMPACTED DEPTH CRUSHED
ROCK BASE COURSE
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12" SUBGRADE COMPACTED TO 95%
TYPICAL OFFSITE ASPHALT PAVING SECTION
NOT TO SCALE
F" PnDTI ANIn rFKAFNIT rnNIrDGTC
4" COMPACTED DEPTH J
CRUSHED ROCK
12" MIN. SUBGRADE COMPACTED TO 95%
NOTE:
GEOTECHNICAL ENGINEER SHALL BE ONSITE DURING PLACEMENT
OF FILL TO VERIFY THAT COMPACTION MEETS MINIMUM REQUIREMENTS
FOR PAVEMENT SECTION.
TYPICAL CONCRETE PAVING SECTION
NOT TO SCALE
AS -BUILT
"CERTIFY THAT THE INFORMATION SHOWN HEREON WHICH WAS
AS -BUILT BY BARGHAUSEN CONSULTING ENGINEERS, AND MAY
INCLUDE LOCATIONS, ELEVATIONS, DEPTHS, PIPE SIZES, AND
AS -BUILT COMMENTS, ACCURATELY REFLECTS EXISTING FIELD
CONDITIONS AS DETERMINED BY ME (ALI SADR) OR UNDER MY
DIRECT SUPERVISION ON THIS DATE: 07-26-2019."
SIGNATURE: a C
RECORD DRAWING
STORM DRAINAGE PIPE SPECIFICATIONS
ALL STORM DRAIN PIPE MAY BE CONSTRUCTED OF ONE OF THE FOLLOWING MATERIALS UNLESS
OTHERWISE SPECIFIED IN THE PLANS. ALL PIPE JOINTS MUST BE GASKETED WATERTIGHT AND
MUST BE OF THE SAME MATERIAL AS THE PIPE. ALL PIPE SHALL HAVE A MINIMUM COVER AS
SPECIFIED AND SHALL BE ADEQUATELY PROTECTED DURING CONSTRUCTION (REFER TO THE
MANUFACTURER'S RECOMMENDATIONS FOR MINIMUM COVER FOR HEAVY EQUIPMENT
LOADINGS).
A. DUCTILE IRON - 4 INCH THROUGH 14 INCH DIAMETER PIPE SHALL BE CLASS 52 AND 16-INCH
THROUGH 24-INCH DIAMETER PIPE SHALL BE CLASS 50, ALL IN ACCORDANCE WITH USA
STANDARD A-21.1 (AWWA C-51). ALL JOINTS SHALL BE PUSH -ON, MECHANICAL, OR
FLANGED (6-INCH MINIMUM COVER).
B. CONCRETE - 4 INCH THROUGH 18 INCH DIAMETER PIPE SHALL BE NON -REINFORCED, BELL AND
SPIGOT WITH RUBBER GASKET JOINTS, CONFORMING TO ASTM C-4 (CLASS II). 21 INCH
THROUGH 36 INCH DIAMETER PIPE SHALL BE REINFORCED, BELL AND SPIGOT WITH RUBBER
GASKET JOINTS, CONFORMING TO ASTM C-76 (2 FOOT MINIMUM COVER).
C. PVC - 4 INCH THROUGH 18 INCH DIAMETER PIPE, WITH 24-INCH TO 36-INCH OF COVER SHALL
BE IN ACCORDANCE WITH ASTM D3034 SDR 21. 4-INCH THROUGH 18-INCH DIAMETER PIPE,
WITH ASTM D3034 SDR 35 SHALL HAVE 36-INCH MINIMUM COVER. ALL JOINTS SHALL BE
PUSH -ON WITH RUBBER GASKETS. PVC STORM PIPE REQUIRES A.C. COLLARS (I.E., CATCH
BASIN CONNECTION) OR KOR-N-SEAL CONCRETE BOOTS.
D. HELICAL CORRUGATED PLAIN ALUMINUM PIPE (CMP) - 6 INCH THROUGH 18 INCH DIAMETER
PIPE SHALL BE 16 GAUGE WITH 2 2/3 INCH X 1/2 INCH CORRUGATIONS. 21 INCH THROUGH
36 INCH DIAMETER PIPE SHALL BE 14 GAUGE WITH 2 1/3 INCH X 1/2 INCH CORRUGATIONS.
REFER TO DETAILS IN THESE PLANS FOR ANY PIPES LARGER THAN 36 INCH DIAMETER. ALL
ALUMINIZED PIPE SHALL HAVE ASPHALT TREATMENT 1 COATING (2.0-FOOT MINIMUM
COVER).
E. HELICAL CORRUGATED STEEL PIPE (HCMP) - 6 INCH THROUGH 36 INCH SHALL BE 16 GAUGE
WITH 2 2/3 INCH X 1/2 INCH CORRUGATIONS. ALL STEEL MATERIALS SHALL BE GALVANIZED
AND ASPHALT TREATMENT 1 COATED. REFER TO DETAILS IN THESE PLANS FOR ANY PIPES
LARGER THAN 36 INCHES IN DIAMETER (2.0-FOOT MINIMUM COVER).
F. CORRUGATED POLYETHELENE MEETING THE REQUIREMENTS OF AASHTO M-294, TYPE S. MINIMUM
PIPE DIAMETER SHALL BE 8". MAXIMUM PIPE DIAMETER SHALL BE 36" OR THE DIAMETER FOR
WHICH THE SUPPLIER HAS A JOINT CONFORMING TO ASTM D 3212, WHICHEVER IS LESS. JOINTS
SHALL BE CLASSIFIED AS "WATERTIGHT". WATERTIGHT JOINTS SHALL BE MADE WITH A SLEEVE
OR WITH A BELL SPIGOT AND SHALL CONFORM TO ASTM D 3212 (10.8 PSI) USING ELASTOMERIC
GASKETS CONFORMING TO ASTM F 477. GASKETED JOINTS SHALL BE LUBRICATED AS RECOMMENDED
BY THE PRODUCER DURING INSTALLATION. "SOILTIGHT" JOINTS SHALL NOT BE PERMITTED.
FITTINGS SHALL BE BLOW MOLDED, ROTATIONAL MOLDED, OR FACTORY WELDED. THERMOPLASTIC
PIPE FITTINGS SHALL MEET THE REQUIREMENTS SET FORTH IN AASHTO M 294.
ACCESSIBLE PARKING SIGN
LOCATE FACE OF CONCRETE
12"
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PARKING
'VAN
ACCESSIBLE]
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STEEL POST
MM
CONCRETE FOUNDATION
12"
DISABLED PARKING
SIGN INSTALLATION
NOT TO SCALE
BLOCK FLUSH WITH EDGE OF 1. PROVIDE A SEPARATE CURB RAMP FOR EACH MARKED OR UNMARKED CROSSWALK.
CONCRETE WALK. CURB RAMP LOCATION SHALL BE PLACED WITHIN THE WIDTH OF THE ASSOCIATED
CROSSWALK, OR AS SHOWN IN THE CONTRACT PLANS.
4" WIDE PF
YELLOW STI
TWO COAT
2.0% MAX
SLOPE
ENVELOPE
AROUND
HANDICAP
5' 8'-0" STALLS (TYP.)
PER MIN.
PLAN
HANDICAP PARKING
§1'swo-A"
14,
I
Lrt,._a!i11
NOT TO SCALE
4"[102mm]
MIN.
17"[432mm]
12"
[305mm]
i INVERT
Z-874-12-SECTION
4"[102mm]
MIN.
6" SD C
DETAIL A
PERMA TRENCH Z874-12
12" TRENCH DRAIN
2. WHERE "GRADE BREAK" IS CALLED OUT, THE ENTIRE LENGTH OF THE GRADE
BREAK BETWEEN THE TWO ADJACENT SURFACE PLANES SHALL BE FLUSH.
3. DO NOT PLACE GRATINGS, JUNCTION BOXES, ACCESS COVERS, OR OTHER APPURTEN-
ANCES IN FRONT OF THE CURB RAMP OR ON ANY PART OF THE CURB RAMP OR LANDING.
4. SEE THE CONTRACT PLANS FOR THE CURB DESIGN SPECIFIED. SEE STANDARD PLAN
F-10.12 FOR CURB, CURB AND GUTTER, AND PEDESTRIAN CURB DETAILS.
5. SEE STANDARD PLAN F-30.10 FOR CEMENT CONCRETE SIDEWALK DETAILS.
SEE CONTRACT PLANS FOR WIDTH AND PLACEMENT OF SIDEWALK.
6. THE BID ITEM "CEMENT CONCRETE CURB RAMP TYPE __" DOES NOT INCLUDE
THE ADJACENT CURB, CURB AND GUTTER, PEDESTRIAN CURB OR SIDEWALK.
7. THE CURB RAMP MAXIMUM RUNNING SLOPE SHALL NOT REQUIRE THE RAMP LENGTH
TO EXCEED 15 FEET TO AVOID CHASING THE SLOPE INDEFINITELY WHEN CONNECTING
TO STEEP GRADES. WHEN APPLYING THE 15 FOOT MAXIMUM LENGTH, THE RUNNING
SLOPE OF THE CURB RAMP SHALL AS FLAT AS FEASIBLE.
8. CURB RAMP, LANDING, & FLARES SHALL RECEIVE BROOM FINISH. SEE STANDARD
SPECIFICATIONS 8-14.
LEGEND
SLOPE IN EITHER DIRECTION
NOT TO SCALE WITH DGE/DGF GRATE (H-20 LOADING)
1 SAp
IN COMPLIANCE WITH CITY OF RENTON STANDARDS
SEE STANDARD PLAN F-30.10
FOR SLOPE TREATMENT
CEMENT CONCRETE
PEDESTRIAN CURB
SEE NOTE 4
D
LANDING
EXTERIOR WALL OF BUILDING
DOWNSPOUT
DOWNSPOUT TO BE SEE ARCH. PLANS
CONNECTED TO PVC PVC REMOVABLE PLUG
ROOF DRAIN
SEE ARCH. PLANS
PVC CLEANOUT
PROPOSED FINISH GRADE
6" MIN.
CONCRETE PAVEMENT OR GRASS
I
3'-0
11
MIN.
PVC ROOF DRAIN LINE
SEE PLAN FOR LOCATION AND SIZE
2-45' ELL
NOTE:
STORM DRAINAGE CONTRACTOR
SHALL EXTEND PIPE UP ALONG
THE FOOTING.
DOWNSPOUT W/ CLEANOUT
NOT TO SCALE
- LANDING
GRADE BREAK
SEE CONTRACT PLANS
4' - 0" MIN.
CEMENT CONCRETE
SIDEWALK - SEE NOTE 5
FLARE
(TYP.)
3/8" EXPANSION
JOINT (TYP.) - SEE
STANDARD PLAN F-30.10
GRADE BREAK
A
CURB RAMP WIDTH 4' - 0" MIN.
LANDING TO MATCH CURB RAMP WIDTH
SEE CONTRACT PLANS
GRADE BREAK
ISEE
CONTRACT PLANS
4'-0"MIN.
PROVIDE SMOOTH
TRANSITION TO
2.0% MAX.SIDEWALK
WIDTH (TYP.)
CURB RAMP
GRADE BR
10.Oq MAX. 10.0% moc
...................
CURB, OR CURB
AND GUTTER
FACE OF CURB DETECTABLE WARNING SURFACE
SEE STANDARD PLAN F-45.10
MEASURED PARALLEL
TO CURB (TYP.)
It DEPRESSED CURB AND GUTTER
SEE CONTRACT PLANS
4 - 0 MIN.
2.0% MAX.
C
CROSSWALK
PLAN VIEW
TYPE PERPENDICULAR A
DETECTABLE WARNING SURFACE
SEE STANDARD PLAN F-45.10
15' - 0" MAX.
SEE NOTE 7
GRADE BREAK
8.3% MAX.
4 4
CURB RAMP a
DETECTABLE WARNING SURFACE
SEE STANDARD PLAN F-45.10
R. TYP. DEPRESSED CURB
& GUTTER
CEMENT CONCRETE CURB
AND GUTTER - SEE NOTE 4
CURB RADIUS DETAIL O
PERPENDICULAR CURB RAMP DETAIL
WSDOT STANDARD PLAN F - 40.15 - 02
NOT TO SCALE
CEMENT CONCRETE CURB RAMP "TYPE
PERPENDICULAR A" PAY LIMIT
Po WASRyRENTON HOTEL PERMIT #U15008433
0 C
z ENGINEER:
i BARGHAUSEN CONSULTING ENGINEERS
24661 18215 72ND AVENUE SOUTH
o�F`S'S ��1 S T E ��� (425)25A-622 22
AL
(425)251-8782 FAX
07/26/2019 CONTACT: DAN BALMELLI
GRADE BREAK
COUNTER SLOPE
5.0% MAX.
GRADE BREAK
TOP OF ROADWAY
e G•
DEPRESSED CURB & GUTTER
SEE NOTE 4
SECTION n
ISOMETRIC VIEW
TYPE PERPENDICULAR A PAY LIMIT
CITY OF RENTON
COMMUNITY AND ECONOMIC DEVELOPMENT
CONSTRUCTION NOTES AND DETAILS
DESIGNED AS
DATE 09/14/2015 FILE NO.
DRAWN MB
CHECKED AS SCALE N/A FIELD BOOK PAGE_
APPROVED C9 20
DIRECTOR OF PUBLIC WORKS SHEET OF
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