HomeMy WebLinkAboutSW23005364.pdfSECTION C.2 ON -SITE BMPS
FIGURE C.2.4.B SCHEMATIC REPRESENTATION OF A TYPICAL GRAVEL -FILLED DISPERSION
TRENCH FOR BASIC DISPERSION
MAX20% SLOPE
RIGID PEFORATED
PIPE, 4" MIN. DIA.
3/4" TO 1-1/2"
WASHED
DRAIN ROCK
TRENCH SECTION
NTS
LEVEL OUTLET
MAX 15% SLOPE
SLOPE ow -
SMALL CATCH BASIN OR YARD DRAIN
�25-FOOT (MIN.) VEGETATED
-FLOWPATH SEGMENT
= 700 SQ. FT. SIMPLE 10- FOOT TRENCH _ y FLOWPATH SEGMENTS
TYPE 1 CB MUST NOT OVERLAP
= 3,500 SQ. FT. _
=25-1`00T (MIN.) VEGETATED
":FLOWPATH SEGMENT
MAXIMUM 50-FOOT TRENCH WITH
NOTCHED BOARD (SEE FIGURE C.2.1.D)
PLAN VIEW OF ROOF
NTS
6/22/2022 2022 City of Renton Surface Water Design Manual
C-60