HomeMy WebLinkAboutL_Declaration_Of_Covenants_Flow_Control_BMP_180206_v1TYPICAL SPLASHBLOCKTYPICAL 10 FOOT DISPERSIONTRENCH CROSS-SECTIONTYPICAL DRIVEWAY APPLICATION OF DISPERSION TRENCH AND ROCK PADHOUSEROOF DOWNSPOUT100' MIN, VEGETATEDFLOWPATH UNDERFULL DISPERSION SEESECTION C.2.1.3SPLASHBLOCKDOWNSPOUTEXTENSIONSPLASH BLOCKSIDE VIEWNTS18"min24"min6"4" perfpipe1 1/2"- 3/4" washedrock6"min24" MIN.MAX 15% SLOPETRENCH SECTIONNTS3/4" TO 1-1/2"WASHEDDRAIN ROCKRIGID PEFORATEDPIPE, 4" MIN. DIA.LEVEL OUTLETMAX 20% SLOPE18" MIN.6" MIN.SIDE VIEWNTSHOUSEDOWNSPOUTEXTENSIONSPLASHBLOCKROOF DOWNSPOUTSERVES UP TO 700 S.F.OF ROOF UNDERBASIC DISPERSIONSPLASH BLOCK50' MIN. VEGETATEDFLOWPATH UNDERBASIC DISPERSION
SECTION C.2 ON-SITE BMPS
12/12/2016 2017 City of Renton Surface Water Design Manual C-60
FIGURE C.2.4.B SCHEMATIC REPRESENTATION OF A TYPICAL GRAVEL-FILLED DISPERSION
TRENCH FOR BASIC DISPERSION
MAXIMUM 50-FOOT TRENCH WITH
NOTCHED BOARD (SEE FIGURE C.2.1.D)
25-FOOT (MIN.) VEGETATEDFLOWPATH SEGMENT
25-FOOT (MIN.) VEGETATED
FLOWPATH SEGMENT
SIMPLE 10- FOOT TRENCH
24" MIN.
MAX 15% SLOPE
TRENCH SECTION
NTS
3/4" TO 1-1/2"WASHED
DRAIN ROCK
RIGID PEFORATEDPIPE, 4" MIN. DIA.
LEVEL OUTLETMAX 20% SLOPE
18" MIN.
6" MIN.
= 700 SQ. FT.
= 3,500 SQ. FT.
SLOPE
SMALL CATCH BASIN OR YARD DRAIN
TYPE 1 CB
PLAN VIEW OF ROOF
NTS
FLOWPATH SEGMENTSMUST NOT OVERLAP