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HomeMy WebLinkAboutTED4001823.2SCALE : I" = 20' HORIZ. 1"=2'VERT. 6 ti I .. V la �� \ � / 72"O / � DETENTION I I PIPE #8 GALVANIZED STEPS PER K. C. DWG. J34 SOLID LOCKING FRAME & GRATE PER K. C. DWG. J49 & If50 72"0 C. B. \ 72"0 I I DENT/ON PIPE _ I I I \ \ a2• / / SHEAR CLEANOUT GATE PER -J Ass, �- 1810 RISER K.C. DWG. #53, MATCH ELEV. rt ORIFICE #1, 1-5/810 DETENTION PIPE SHALL BE - HELICALLY CORRUGATED GALVANIZED STEEL PIPE WITH ASPHALT TREATMENT 1 OR BETTER, WITH WATERTIGHT CONNECTING BANDS. PIPE SHALL HAVE �1 SURVi"k� 3" x 1" CORRUGATIONS (MIN.) AND ;� pF WAstir ',1 4% • SHALL BE 16 GA. (MIN.) PLAN VIEW N - 0 z C-581 i��FG/STER, qq / ^ - IGI - C.B. *10 CONFORMS TO CONSTRUCTION RE DS BY DAT : 40 I 9� r-V O"i f C` C` TY PA I/EMENT EL. = 14.9 RIM = 15.43 I.E. = 10.17 V Y -1. .J. ® S = 6.6X i. E. = 5. 9_t EX. .30"o S. D. A SECTION E- E_ NOT TO SCALE i L 3" A. C. CLASS 'B' 6" CRUSHED ROCK BASE (CRB) OR 4" ATB 12" MIN. CLASS 'A' GRA VEL AL PAVEMENT SEC STORM 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. J. 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. Al/ retention/detention facilities must be installed and in operation prior to or in conjunction with al/ construction activity unless otherwise approved by the Department of Public Works, Storm Water Utility. 8. Gross seed may be applied by hydroseeding. The grass seed mixture, other than City of Renton approved standard mixes, shall be submitted by o 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 backfil/ shall be compacted to minimum 959 for pavement and structural fill and 909 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 hove 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: 4"-8"/40Av-709 passing; 2 -4 rocklJOX-407 passing; and -2" rock/10.`r;-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. 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" , - A ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: :::::: 'P::[ �::::::: ?=8=�v: :: `, t�.�. . ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: ::::::::: lt��4r:r� sty roe. 16 14 12 10 !;I Pi Z REu ) N S NO. DESCRIF -E BY of UN /0-3-89 D.O. 2 nt; 11-1-89 D.O. 3 :P.ER CONTRACTOR REO'T. D.O. As GUN67TRUCTED 8-15-91 E.R. , ir.h:10F o�:� . �';vS l '' . 0 Q j I#12�i 'ry/s � � r 44� �yo. ...._•• %`A ,.. r-- W r, O Z O 5 r- a H W 5 M 0 �� 00 'M 3i0 N c0 III" W Z I V i_ W ~U' N 9 � Z • U) Q 2 (D J Q N X0(5 W 3 u FS ffi az Z Ow(D Z L) Wd=W 0)X( z Y o V a: z Z O V) Q w a: �e 3: 3: O J V) 2 3: � Z J O J 1=- 06 U 2 W V) a: ad a: C� (/) 0 .__I O O C) Q o L Vn Q a. I Z O H 2 2 Z >- >= Q� J 0 J o 0 �_ U JOB NO. 426-01-881 DESIGNED BY: D. OFFE DRAWN BY: K.L. CHECKED BY: L.T.P. DATE: SEPT., 1989 DATE OF qA PRINT OF SHEETS 0 r" a4 y� C ad r C)�z M, a 0�6 0 M ® Cn r ��N x 0 11� y /(6 / I? 3 SCANNED MAR 2 8 Z003