HomeMy WebLinkAbout260.00BUILDING ROOF
CONTRIBUTING IMPERVIOUS AREA
SEE NOTE 4)
DRIVEWAY
DOWNSPOUTCONTRIBUTINGIMPERVIOUSAREA
SEE NOTE 4) GUTTER
4-.\--
ROCK OR O
OR PIPED CONNECTION,
VEGETATIN
SEELINED NOTEDITCH,
2
5'MIN.,
SEE NOTE 1
I ROCK SPLASH PAD PER STD.PLAN 260.10
SEE NOTE 3
TOP OF SLOPE
BOTTOM OF SLOPE
2.5H:1V(OR FLATTER) ,SHAPE CAN VARY TO FIT SITE,MINIMUM WIDTH=18")
9A% ,_ NNOPTIONAL SURFACE
I iei;i OVERFLOW WITH
Z: Wel
CITY APPROVAL
DISPERSION TRENCH(TYP.),
SEE STD DETAIL 260.10
eiMJ. 10.-,-•••••••••••••••••1t' tit1
5'MIN., ) roe 60.10 r.iirair!t l}fir}
SEE NOTE 1 i4`0.Ale4400101!i'.01 !SI
y. / 4'MIN.
ce
o
CO 4 j//, /Lu PIPED CONNECTION TO STORM
ce
O
DRAIN SYSTEM,SEE NOTE 2
a PONDING
EXTENTS
BIRD CAGE OVERFLOW
I 6"MIN.FREEBOARD TOP OF PONDING
USE AREA FOR SIZING,SEE NOTE 4)
OPTIONAL COMPACTED EARTH
BERM, 2'MIN.TOP WIDTH
RIGHT-OF-WAY(SIDEWALK OR ALLEY)
NOTES:
1. TOP OF RAIN GARDEN SHALL BE 5 FEET MIN.FROM BUILDINGS WITHOUT BASEMENT AND 10 FEET MIN.FROM BUILDINGS W1TH BASEMENTS.
2 SLOPE PIPED CONNECTION AT 2%(PREFERRED),1%MIN.USE 6"MIN.ASTM D1785 SCH 40 PVC. CONNECTIONS TO STORM DRAIN SYSTEM REQUIRE CITY
INSPECTION.
3. SHEET FLOW INTO RAIN GARDEN MAY BE KEPT WIDELY DISTRIBUTED OVER A STABILIZED SURFACE(PAVEMENT,PEA GRAVEL,GRASS). IF CONCENTRATED,
PROVIDE A SWALE WITH DECORATIVE ROCK AND VEGETATION TO PREVENT EROSION.
4 RAIN GARDEN SIZE AT TOP OF PONDING(OVERFLOW ELEVATION)TO BE AT LEAST 5%OF CONTRIBUTING HARD SURFACE AREA. IF LAWN/LANDSCAPE AREA
ALSO DRAINS TO RAIN GARDEN,INCREASE SIZE BY 2%OF LAWN/LANDSCAPE AREA.MAXIMUM CONTRIBUTING AREA SHALL BE 5,000 SF.
GENERAL NOTES:
1. MINIMUM UTILITY SETBACKS AND PROTECTION MEASURES MUST CONFORM TO THE CITY OF RENTON SURFACE WATER DESIGN MANUAL APPENDIX C.2.6,
CURRENT CITY STANDARDS,AND STD.PLANS 265.00 AND 265.10. COORDINATE WITH CITY ENGINEER IN THE EVENT OF UTILITY CROSSINGS OR CONFLICTS.
UNLESS OTHERWISE NOTED,DRAWING IS NOT TO SCALE(NTS)
c,\
Y v o,,, STD.PLAN-260.00
iRPUBLIC WORKS AP VED:
DEPARTMENT RAIN GARDEN PLAN
P(//f/ IAA,,,,.
Grersz me ar:
Nieto WorksA /h r