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HomeMy WebLinkAboutR-374207F- Ch OL r Iil I NATIVE GROWTH RETENTION\ AREAs (NGRA) = 28,340_ S 9 u0 =5 uU09 uuu V LSO uu0 PIPE OUTFALL TO EXISTING DITCH, v(TYP) (/ TYPE 1 /2 12 \ W /SOLID LID \ RIM 406.10 IE404.50 001 `� \ \,(D N1.\ \ \ \ \ � \ mss_ l DRAINAGE MITIGATION AREAS : - \ - � SD x SD_ TOTAL NEW PLUS REPLACED IMPERVIOUS SURFACE = 6,167 SF NATIVE GROWTH RETENTION AREA CREDIT REQUIREMENT = 3.5 X 6,167 = 21,565 SF NATIVE GROWTH RETENTION AREA PROVIDED ='244 SF �> xi 34o ss - O7 CONNECT STORM D) 1AI NOTES O0S713 5.5 52 LF I I 7 -10 1 ) CO TYPE 1 \ 0 0.056 ft /ft� W /SOUD LID 2 ; 1. UNLESS OTHERWISE INDICATED, STORM DRAIN PIPE (SD) SHALL BE PVC, ASTM D3034, SDR 35 - OR / / - ` RIM 40150 CORRUGATED HIGH DENSITY POLYETHYLENE (CPEP) DOUBLE WALL SMOOTH INTERIOR BY 'ADS' OR 'HANCO * OR APPROVED EQUAL - 2. DUCTILE IRON PIPE (DI), WHERE (IF) INDICATED (AND /OR REQUIRED), SHALL CONFORM TO AWWA C151. UNLESS \ - OTHERWISE INDICATED PIPE SHALL BE MINIMUM THICKNESS CLASS 50. FITTINGS FOR DUCTILE IRON PIPE SHALL - BE RUBBER GASKET PUSH -ON -JOINT (TYTON) OR MECHANICAL JOINT (M.J.) CONFORMING TO AWWA C111. METAL THICKNESS AND MANUFACTURING SHALL CONFORM TO APPLICABLE PORTIONS OF AWWA C110. MECHANICAL JOINT, DUCTILE IRON, COMPACT FITTINGS 12 INCHES AND LESS SHALL BE IN ACCORDANCE WITH AWWA C1532 - 3. FOOTING DRAINS SHALL BE 4' MINIMUM DIAMETER PVC, ASTM D2729 WITH DRILLED OR SLOTTED PERFORA71ONS I I I WHERE INTENDED FOR COLLECTING GROUND WATER AND SOLID WALL WHERE INTENDED FOR CONVEYANCE SET , FOOTING DRAINS AT 0.005 FT/FT MINIMUM SLOPE TO DRAIN AND CONNECT TO THE STORM DRAIN SYSTEM CONSTRUCTION NOTES: (BYPASSING ANY TREATMENT AND /OR DETENTION SYSTEMS) IE 399.00 4. ROOF DRAIN EXTENSIONS SHALL BE 4' MINIMUM DIAMETER PVC, ASTM 02729. SET ROOF DRAIN EXTENSIONS AT 1 DRAINAGE SWALE PER DETAIL 9/C5.1 11 FOUNDATION DRAIN PER DETAIL 1 /C5.1 DRAINAGE AND BM P PLAN 0.005 FT/FT MINIMUM SLOPE TO DRAIN AND SHALL BE CONNECTED TO THE STORM DRAIN SYSTEM AS INDICATED. O CATCH BASIN TYPE 1 PER CDR STD PLAN 200/06.1 12 MAINTAIN EXISTING DITCH SCALE: 1' =30' 5. ROOF DRAIN DOWNSPOUT LEADERS ARE SHOWN TO PROVIDE SCHEMATIC LAYOUT. CONFIRM DOWNSPOUT O3 6' MIN. DIAMETER STORM DRAIN PIPE, TRENCH PER CDR STD PLAN 22O/C6.1 13 DAYLIGHT WALL DRAIN TO EXISTING DITCH LOCATIONS FROM ARCHITECTURAL ROOF PLAN. FIELD COORDINATE AND ADJUST LAYOUT AS NECESSARY FOR CONNECTIONS OF DOWNSPOUTS TO LEADERS 4 RIPRAP ARMOR AT DUVALL PER DETAIL 10/C5.1 14 12' DIAMETER STORM DRAIN PIPE, TRENCH PER CDR STD PLAN 220 /06.1 6. CMP DET. PIPE MATERIAL, JOINTS, AND PROTECTIVE TREATMENT SHALL BE IN ACCORDANCE WITH SECTION 9.05 5 BOUNDARY OF NATIVE GROWTH RETENTION AREA 15 CONNECT RIPRAP ARMOR TO LEVEL SSPREADER PER CDR STD PLAN OF THE WSDOT /APWA STANDARD. SPECIFICATIONS AS MODIFIED BY THE KING COUNTY ROAD STANDARDS AND 217.50/C6.2 AASHTO DESIGNATIONS 6 CUT EXISTING CURB FOR DRAINAGE TO EXISTING CB RECOMMENDED FOR APPROVAL BY: DATE 7.23.ae••f BY: DATE BY: DATE BY: DATE C� r 1 LF 12' SDO P.025 ft/ft I i_:. - :l i i II -80 0 10 9D EO ( IN FRi61' ) 1 imh - 90 & BUILDING PERMIT CHILD School 4/25/14 DRAINAGE AND BMP'S I C3.1 R•374z©1 C3 o0 7. PAVEMENT TRENCH DRAINS SHALL BE Y WIDE CAST IRON ASSEMBLIES BY NEENAH, R- 4995 -8, TYPE M MEDIUM 7 CONNECT NEW SO PIPE TO EXISTING WITH CUT -IN WYE DUTY OR APPROVED EQUAL 8O WALL DRAIN PER DETAIL 2/C5.1 OR 3/C5.1, AS APPLICABLE 8. SWPE PIPE SHALL BE HIGH DENSITY POLYETHYLENE (HOPE) AND COMPLY WITH THE REQUIREMENTS OF TYPE III c m C5P34 AS TABULATED IN ASTM D1248, SHALL HAVE THE PPI RECOMMENDED DESIGNATION OF PE3408, AND O 4' MINIMUM DIAMETER PVC DRAIN PIPE TO CONNECT WALL DRAINS TO STORM SHALL HAVE AN ASTM D3350 CELL CLASSIFICATION OF 345534C. THE PIPE SHALL HAVE A MANUFACTURER'S GRAIN SYSTEM RECOMMENDED HYDROSTATIC DESIGN STRESS RATING OF 800 PSI BASED ON A MATERIAL WITH A 1600 PSI 10 ROOF DRAIN PER DETAIL 1/C5.1 DESIGN BASIS DETERMINED IN ACCORDANCE WITH ASTM D2837 -69. THE PIPE SHALL HAVE A SUGGESTED DESIGN m WORKING PRESSURE OF 50 PSI AT 73.40 F AND SDR OF 32.5. RECOMMENDED FOR APPROVAL BY: DATE 7.23.ae••f BY: DATE BY: DATE BY: DATE C� r 1 LF 12' SDO P.025 ft/ft I i_:. - :l i i II -80 0 10 9D EO ( IN FRi61' ) 1 imh - 90 & BUILDING PERMIT CHILD School 4/25/14 DRAINAGE AND BMP'S I C3.1 R•374z©1 ( I I C3 o0 C € 20 C � o = �Qr ' °= 0 c m I � A ( I I C3 D F 0 € 20 C � o = �Qr ' m 0 c G-z) C C N m m I y D F 0 N � n a � o = �Qr ' ti o° � F 0 O 0 ao �r ' w) N D F 0 m C f m z Z