HomeMy WebLinkAbout225.2012"
12"
YARD DRAIN OR CATCH BASIN
WITH SOLID LID
2' MIN.
SECTION A
PLAN
ELEVATION
HOUSE
HOUSE
5' MIN.10' MIN.SEE NOTE 2
ROOF DOWNSPOUT WITH OVERFLOW
WYE AND SPLASH BLOCK
6" DIA. MIN. PVC,
SDR 35 PER ASTM D3034
6" MIN.
FINE MESH SCREEN, SS304 10x10 OR SIMILAR
6" DIA. MIN. PERFORATED PVC,
SDR 35 PER ASTM D3034
NON-WOVEN GEOTEXTILE FOR SEPARATION
ON TOP AND SIDES OF TRENCH PER WSDOT
SPECIFICATIONS SECTION 9-33.2(1) TABLE 3
COMPACTED BACKFILL
6" DIA. MIN. PERFORATED PVC,
SDR 35 PER ASTM D3034
6" MIN.
6" MIN.
12" MIN.APERFORATED PIPE TO BE LEVEL
3/4" TO 1-1/2" WASHED DRAIN ROCK
OR GRAVEL BACKFILL FOR
DRYWELLS PER WSDOT STD
SPECIFICATION SECTION 9-03.12(5)
12" MIN. ABOVE SEASONAL HIGH
GROUNDWATER OR HYDRAULICALLY
RESTRICTIVE LAYER
FLEXIBLE GASKETED
CAP PER ASTM D5926
NOTES:
1.15' MINIMUM SETBACK FROM INFILTRATION TRENCH TO BUILDINGS WITH CRAWL SPACES, BASEMENTS, OR ELEVATIONS
BELOW THE OVERFLOW POINT.
2.REQUIRED TRENCH LENGTH VARIES DEPENDING ON SOIL TYPE, UP TO 100' MAX. WHEN LOCATED IN COARSE SANDS OR
COBBLES, INFILTRATION TRENCHES MUST BE AT LEAST 20' IN LENGTH PER 1,000 SQUARE FEET OF IMPERVIOUS
SURFACE SERVED. WHEN LOCATED IN MEDIUM SANDS, INFILTRATION TRENCHES MUST BE AT LEAST 30' IN LENGTH PER
1,000 SQUARE FEET OF IMPERVIOUS SURFACE SERVED.
3.SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS.
6" MIN.
CLEANOUT
PER STD. PLAN 226.00
24" MIN.
SINGLE FAMILY ROOF DOWNSPOUT
INFILTRATION TRENCH
STD. PLAN - 225.20
PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEMartin Pastucha
Public Works Administrator
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
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8/13/2020 | 8:48 AM PDT