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STORM DRAINAGE GENERAL 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 APWA
Standards and Specifications.
2. A copy of this plan must be on -site whenever construction is in progress.
3. It shall be the responsibility of the contractor to obtain street use and
other related permits prior to any construction in county or state right-of-way.
4. Approximate location of existing utilities have been obtained from available
records and are shown for convenience. The contractor shall be responsible for
verification of locations shown and for discovery of possible additional
utilities not shown, so as to avoid damage or disturbance.
5. Locations of the structures shown hereon are approximate. Exact locations shall
be field set by the engineer.
6. Catch Basins and Grates:
A. ALL C8 5 (EXCEPT CB 5 2, 12, 22, 32, 33, 34, 51 y' 52) 5HALL 5E A. PWA. TYPE I -C OR TYPE 11- C A3 5PEC I FI ED CIN PLAN5 .
13. CB"- No, 2,12, 22, 33, 34, 51 4 52 NALL BE 36" oe 48" CORRllGATE13 METAL P15ER TEES A5 5PECIFIED ON PON5 .
C. CPS• MO. 32 514ALL SE 72 Dig, COPR14KED METAL (M•H• TYPE)
o. All yard drains shall be Associated Sand & Gravel CB #10 with open grated
lids or equal.
E. All grates shall be Olympic Foundry No. 5435A , dcteti le . iron, or equal . (or vane-J Per Gen. no4c 1�
F. �l7 catch basin rates not ,n paved area. to be IocKlrn9 tf+pe.
7. Storm Sewer Conveyance Pipe: lei I pi pe to be 9asketed .
A. All 8", 12", 15" and 18" diameter storm drain pipe to be helical corru-
gated metal pipe (2-2/3" X 1/2" corrugation), minimum 16 gauge aluminum,
or galvanized steel. Steel pipe shall be asphalt coated (treatment 1 or
better).
All 48" diameter storm drain pipe to be helical corrugated metal pipe
(3 x 1 corrugation) minimum 14 gauge, aluminum or galvanized steel. Steel
pipe to be asphalt coated (treatment 1 or better).
Alternate: Storm drain conveyance pipe may be concrete, rubber gasketed
ASTM C-14 Class II, non -reinforced bell and spigot (with bell flush with
catch basin wall if used) unless otherwise specified on the plans.
B. All 6" diameter storm drain pipe shall be non -perforated P.V.C. conforming
to ASTM D-3034, SDR 35.
8. Storm Sewer Detention Pipes: All pipes to be ya.sketed.
A. All 54", 66" and 72'' diameter storm sewer detention pipe to be helical
corrugated metal pipe (3 x 1 corrugation), 14 gauge aluminum, or 14 gauge
galvanized steel. Steel pipe to be asphalt coated (treatment 1 or better).
9. All pipe bedding shall be APWA Class 'C'. All trench backfill shall be compacted
to minimum 95 % per ASTM D1557-70.
10. All building roof drain downspouts and footing drains shall be directly connected
to the main storm drainage conveyance system through an underground pipe system.
The system shown hereon is a recommended solution. The contractor/landscaper
may alter the system as required, with prior o-pFcovo-J by the Ci-f j F_nglneeri n� Dcpt.
11. A preconstruction conference. with city per5onel will be required prior
to starting new construction.
12. frior° to in5ttalla.tion , photoyraph5 o-f orifice re5trietor dev'(ces 5ha.11 be Submitted
to the City Engineerinq Dept for opprova.l of orifice machine eu.tt►n9.
13. All Type II catch basing and riser tees 5hod1 have ladder ru,n95
14, C.B.'g #4, 9, f4,19, 3T, �4 ' 60 5hcd ) have vaned tge 5cl4 locking 2ra,ta5 - Olympic Foundry No. 5435-vancd, or epa-/.
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Appwvt_d _ Date
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3.30.�3
.S•� 83 /f ZV1_YED CB _ Z TO R/JS ,f TEE
.3 30 d9 /YEIl/9E0 /,Ff e/rY OF IWAI'rON if'eylefv S.Z.B.
REV DATE DESCRIPTION BY
LINCOLN PROPERTY CO.
11400 TON 00 S. E. 6 TH S T. SUI TE 220 4
HIGHLAND VILLAGE APARTMENTS
(206) 454-3743 OR BB5 -7B77
DODDS ENGINEERS, INC.
1950-130TH AVENUE NORTHEAST
BE'`LEVUE, WASHINGTON 98005
BOOK PRpOJ NO,
SVO DATE aL
12
APP'D / 3/- 83 SHT 6 OF 23
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