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HomeMy WebLinkAbout234.10 (replaced 2020)SCALE: CROSS SECTION A 234.00NTS EMERGENCY OVERFLOW WS DESIGN WS EMERGENCY OVERFLOW SPILLWAY CROSS SECTION B HAS 2 OPTIONS OVERFLOW WSPOND DESIGN WS DESIGN WS NOTES: 1.THIS DETAIL IS A SCHEMATIC REPRESENTATION ONLY. ACTUAL CONFIGURATION WILL VARY DEPENDING ON SPECIFIC SITE CONSTRAINTS AND APPLICABLE DESIGN CRITERIA. 2.ACCESS ROAD AND RAMP SHALL MEET REQUIREMENTS IN STANDARD PLAN 234.50. 3.SIDE SLOPES (INTERIOR AND EXTERIOR) SHALL NOT BE STEEPER THAN THREE (3) FEET HORIZONTAL TO ONE (1) FOOT VERTICAL. 4.OPEN PONDS SHALL NOT BE LOCATED IN DEDICATED PUBLIC RIGHT-OF-WAY. 5.EXPOSED EARTH ON THE POND BOTTOM AND INTERIOR SIDE SLOPES SHALL BE SODDED OR SEEDED WITH AN APPROPRIATE SEED MIXTURE PER SECTION 5.1.1.1 OF THE CITY OF RENTON SURFACE WATER DESIGN MANUAL (RENTON SWDM). ALL REMAINING AREAS OF THE TRACT MUST EITHER BE PLANTED WITH GRASS, OR BE LANDSCAPED IN ACCORDANCE WITH LANDSCAPING REQUIREMENTS INCLUDED IN SECTION 5.1.1.1 OF THE RENTON SWDM. 6.LANDSCAPING, TREES, POND GEOMETRY AND FENCING STANDARDS ARE SPECIFIED IN STANDARD PLAN 234.40. 7.SEE SECTION 5.1.1.2 OF THE RENTON SWDM TO CALCULATE THE REQUIRED WEIR WIDTH. 8.WHEN CONNECTING TO A NEW PIPE, USE A FLEXIBLE CONNECTOR (KOR-N-SEAL BOOT WITH CORRUGATED PIPE ADAPTER OR APPROVED EQUAL). WHEN CONNECTING TO AN EXISTING PIPE, USE A FABRICATED SAND COLLAR OF THE SAME MATERIAL AS THE CONNECTING PIPE. 9.SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS. DEBRIS BARRIER PER STD. PLAN 223.00 OVERFLOW WS 100 YR EMERGENCY OVERFLOW WATER SURFACE (WS) OUTLET FLOW CONTROL STRUCTURE PER STD. PLANS 237.00-237.20 6" SEDIMENT STORAGE TOP WIDTH OF BERM. 6' MIN. 12'-15' MIN FOR ACCESS ROAD 3 13 1 KEY, IF REQUIRED BERM EMBANKMENT 5' MIN. SETBACK PROPERTY LINE EXISTING GROUND CIRCUMFERENCE LENGTH OF OPENING FOR 100-YR FLOW FRAME/GRATE FOR SECONDARY INLET. PROVIDE VERTICAL BARS IN FRAME AT 4" O.C. (OTHER SYSTEMS ACCEPTABLE IF APPROVED BY THE CITY). SEE ALSO THE SEPARATE OVERFLOW STRUCTURE 4" ASPHALT (FOR SPILLWAYS ON ACCESS ROADS) VARIES, SEE NOTE 7 100-YR EMERGENCY OVERFLOW WS 6" MIN. FREEBOARD OVERFLOW WS 3 1 3 1 1' ROCK LINING MAX STONE SIZE - 12" MEDIAN STONE SIZE - 8" MIN STONE SIZE - 4" COMPACTED EMBANKMENT ROCK LINING PER PER CROSS SECTION B DESIGN WS OVERFLOW WS SCALE: CROSS SECTION B 234.00NTS SCALE: CROSS SECTION C 234.00NTS SECTION AA EXISTING GROUND 6" MIN. FREEBOARD SEE NOTE 8 (TYP.)XXSEE STD. PLAN 234.40 FOR FENCE REQUIREMENTS TYPICAL DETENTION POND SECTIONS STD. PLAN - 234.10 PUBLIC WORKS DEPARTMENT APPROVED: DATEGregg Zimmerman Public Works Administrator UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS) DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878 9/28/2018 | 9:45 AM PDT