HomeMy WebLinkAboutTED4001834.3STORM DRAINAGE NOTES
1. Before any construction or development activity
occurs, a pre -construction meeting must be held with
the City of Renton Department of Public Works, Design
Engineer.
2. All construction shall be in accordance with the " 1988
Standard Specifications for Road, Bridge and Municipal
Construction" prepared by W.S.D.O.T., and the American
Public Works Association (APWA), as amended by the City
of Renton Department of Public Works.
3. The storm drainage system shall be constructed
according to the approved plans which are on file in
the Department of Public Works. Any deviation from the
approved plans will require written approval from the
City of Renton Department of Public Works, Design
Engineer or Storm Water Utility.
4. A copy of these approved plans must be on the job site
whenever construction is in progress.
5. Datum shall be U.S.G.S. unless. otherwise approved by
City of Renton Department of Public Works. Reference
benchmark and elevation are noted on the plans.
6. All sedimentation 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.
7. All retention/detention facilities must be installed
and in operation prior to or in conjunction with all
construction activity unless otherwise approved by the
Department of Public Works, Storm Water Utility.
8. Grass seed may be applied by hydroseeding. The grass
seed mixture, other than City of Renton approved
standard mixes, shall be submitted by a Landscape
Architect and approved by the Dept. of Public Works,
Storm Water Utility.
9. All pipe and appurtenances shall be laid on a properly
prepared foundation in accordance with Section
7?02.3(1) of 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 so 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. All trench backfill shall be
compacted to minimum 95% for pavement and structural
fill and 90% otherwise per ASTM D-1557-70. Pea gravel
bedding shall be 6" over and under P.V.C. pipe.
10. Galvanized steel pipe and aluminized steel pipe for all
drainage facilities shall have asphalt treatment #1 or
better inside and outside.
11. Structures shall not be permitted within 10 feet of the
spring line of any storm drainage pipe, or 15 feet from
the top of any channel bank.
12. All catch basin grates shall be depressed 0.10 feet
below the pavement level.
13. Open cut road crossings thru existing public
right-of-way will not be allowed unless specifically
approved by City of Renton Dept. of Public Works,
Design Engineer.
14. Rock for erosion protection of roadside ditches, where
required, shall be of sound quarry rock placed to a
depth of 1 foot and must meet the following
specifications: 47-8"/40%-70% passing; 2' -4"
rock/30%-40% passing; and -2" rock/10%-20% passing.
15. All building downspouts and footing drains shall be
connected to the storm drainage system, unless approved
by the Dept. of Public Works, Design Engineer or Storm
Water Utility. An accurately dimensioned certified as
built drawing of this drainage system will be submitted
to the City of Renton upon completion.
16. Issuance of the Building or Construction Permit 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.
17. 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 performance of
work covered by the contract. Any work within the
traveled right-of-way that may interrupt normal traffic
flow shall require an approved traffic control plan
by the Traffic Engineering Div, of the Dept. of Public
Works. All section of the W.S.D.O.T. Standard
Specifications 1-07-23, Traffic Control, shall apply.
18. Special drainage measures will be required if the
project location is within the aquifer protection area.
NELSON PL ACE N. W.
WATER NOTES
1. All work materials shall be in conformance with the
standards and specifications of the City of Renton
Utility Department and the latest edition of the
WSDOT/APWA Standards and Specifications, as approved by
the City of Renton. A set of approved plans shall be
kept on site at all times during construction.
2. The hours of work in the street right-of-way shall be
limited to 8:30 AM to 3:30 PM on weekdays unless other
wise approved in writing by the Department of Public
Works at 235-2635. All street closures, partial or
full, shall be approved by the Department of Public
Works 24 hours in advance. The Police Department,
Fire Department, and 911 shall be notified 24 hours in
advance.
3. All locations of existing utilities shown are
approximate and it shall be the contractor's
responsibility to verify the true and correct location
so as to avoid damage or disturbance. For utility
locate call 48-Hour Locators, 1-800-424-5555.
4. All water main pipe to be cement lined ductile iron
pipe conforming to AWWA C110 and C111 or latest
revision, thickness Class 52. Cement mortar lining and
seal coating shall conform to AWWA C104 or latest
revision. Pipe joints to be push -on or mechanical
joint. Bedding to be Class C. All ductile iron pipe
installed South of Sunset Blvd. (Empire Way, SR 900)
and West of SR 167 ( East Valley Freeway) or in soils
of hi h resistivity shall be polyethylene wrapped per
ANSI%gAWWA C105-77 Standards.
5. Cast iron and ductile iron fittings shall be cement
lined, pressure rated as noted on plans, and in
accordance with ANSI/AWWA C110/A21.10-82. Cement
lining shall be in accordance with ANSI/AWWA
C104/A21.4-85. If fittings are 3 inches to 12 inches
in diameter and have mechanical joints, the fitting
shall be in accordance with either ANSI/AWWA
C110/A21.10-82 or ANSI/AWWA C153/A21.53-84. 3-inch to
12-inch diameter fittings which have mechanical joints
and/or flanged joints shall be in accordance with
ANSI/AWWA C110/A21.10.82 or a combination of ANSI/AWWA
C110/A21.10.82 and ANSI/AWWA C153/A21.53-84 such that
the portion of the fitting with a mechanical joint(s),
may be in accordance with ANSI/AWWA C153/A21.53-84 and
that portion of the fitting with flanged joint(s) shall
be in accordance with ANSI/AWWA C110/A21.10-82.
Acceptance testing in accordance with section 53-5.3 of
ANSI/AWWA C153/A21.53-84 or with section 10-4.3 of
ANSI/AWWA C110/A21.10-82 shall be obtained by the
contractor and transmitted to the owner.
6. Gate valves shall conform to AWWA C500 and shall be
iron body, bronzed -mounted, double disc with bronze
wedging device and 0-ring stuffing box. Valves shall
be designed for a minimum water operating pressure of
200 PSI. Gate valves shall be Clow List 14, Mueller
Company No. A2380, or M & H. All valves 12" in
diameter and larger, shall be installed in a vault.
See water standard detail for 12" Gate Valve Assembly
Vault and 1" Bypass Installation.
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7. Fire hydrants shall be Corey type (opening with the
pressure) conforming to AWWA C-504-80 with a 6 inch
inlet and a M.V.O. of 5 inches, two 2-1/2 inch hose
nozzles with national standard 7 inch, 60 degrees V.
threads, O.D. thread 4.875 and root diameter 4.6263,
1-1/4 inch pentagon operating nut opened by turning
counter clockwise left).
8. All water main 10 inches and smaller to maintain a
minimum cover of 36 inches below finish grade. All
water mains 12 inches and larger shall be at a minimum
of 48 inches below finish grade. Where utility
conflicts occur, water mains are to be lowered to
clear.
9. All water mains six (6) inches in diameter and larger
shall be cleaned with pipe cleaning "PIGS' prior to
disinfection. The "Poly Pigs" shall be Girard
Industries Aqua Swab -As or approved equal, 2 Ib/cu ft
density foam with 90A durometer urethane rubber coating
on the rear of "PIG" only. "PIGS' shall be cylinder
shaped with bullet nose or square end. The City will
assist the contractor who will perform the cleaning
operation.
9a. All water mains and services shall be pressure tested
to a minimum of 200 PSI or 150 PSI over operating
pressure, in accordance with the specifications of the
City of Renton and the Washington State Health
Department. All pressure testing shall be done in the
presence of a representative of the City of Renton.
9b. All water mains ands service shall be disinfected by
the injection of a 50 m Minimum concentration
1 PP ( )
chlorine/water solution. Dry Calcium Hypochlorite
shall NOT be placed in the pipe as laid. Chlorine
shall be metered/injected in accordance with Section
7-11.3(12) E or 7-11.3(12)F of the Standard
Specifications referenced in 1 above.
10. A preconstruction conference is required prior to any
construction. A minimum of 3 (three) working days
notice is required for scheduling. Prior to the precon
a permit information sheet must be supplied to the
Utility Engineer's Office. Twenty -Four hour notice
will be required prior to starting new construction.
11. It shall be the contractor's responsibility to secure
all necessary permits prior to starting construction.
12. Installation of corporate stops, water services, lines
and meters shall not be done until all service
agreements, meter applications, construction permits,
and payment of fees have been made to the City of
Renton.
13. All connection to existing mains to be accomplished by
the City of Renton, except wet taps which may be made
by approved wet tap contractors with prior approval of
from the Department of Public Works. All necessary
excavation and materials to be supplied by the
contractor and be on -site prior to City notifications.
�- SEE PAVEMENT WIDENING SECTION SHEET C-3
FOR TYPICAL PAVEMENT REQUIREMENTS.
NOT TO SCALE
II. PE
CONFORMS TO CONSTRUCTION
RECORDS
fir
3 DATE -
RETAINER GLANDS
8" ADAPTER (MJxFL
8" LENGTH AS REQ
3 EA. 3/4" m RODS
-RECOMMENDED
FnR IIII OVAL
14. Inspection will be accomplished by a representative of
the City of Renton. It shall be the contractor's
responsibility to notify the Utility Department 24
hours in advance of backfilling all construction. The
contractor as well as the Engineers shall keep
as -built drawings.
15. Contractor to provide plugs and temporary blow -off
assemblies for testing and purity acceptance prior to
final tie-in.
16. All joint restraint systems (shackle rods, nuts,
bolts, etc.) shall be a manufactured by the Star
Manufacturing Company of Columbus Ohio or equal
approved in writing by the Department of Public Works.
17. Asphalt and concrete street paving shall be sawcut to a
minimum depth of two inches. Oil mat streets may be
spade cut. All surface concrete, pavement, sidewalks,
curb, gutters, and driveway approaches shall be sawcut
to a minimum depth of two inches or removed to an
existing expansion joint.
18. A temporary cold mix asphalt patch shall be placed on
the day of initial excavation with a permanent, sealed
patch to be placed, to City of Renton policy, within
ten days. Call for subgrade inspection prior io
placement of final patch. Trenches will not be left
open over night without prior written approval of the
Inspector.
19. For City projects such as telemetry conduit, the PVC
pipe used shall be schedule 40 in unimproved areas and
schedule 80 under improved areas. All chemical process
lines shall be schedule 80 PVC pipe.
'NTERIOR WALL OF BUILDING
\S REQ'D. PER MECHANICAL
'LAN CONTRACTOR SHALL
COORDINATE ACTUAL LOCATION
rv/MECHANICAL ENGINEER OR
CONTRACTOR.
3" BLIND FLANGE, LEVEL
w/FLOOR
3" SPOOL,. LENGTH AS REQ'D.
f0 KEEP BLIND FLANGE LEVEL
3" 90' BEND (MJ)
3
INTERIOR RISER DETAIL
NOT TO SCALE
RECOMMENDED
COP APPROVA L
/ aAZ&
RECOMMENDED
FOR APPROVAL
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REVISIONS
NO.
DESCRIPTION/DATE
BY
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JOB NO_
438-01-890
DESIGNED
BY: F.
BROWN
DRAWN BY: L.B.
CHECKED
BY: L.T.P.
DATE: NOVEMBER,
1989
DATE OF
PRINT
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OF
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