HomeMy WebLinkAbout262.30PLAN
INFLOW
MATCH
GUTTER
WIDTH
MATCH
CURB
WIDTH
12" MIN.
18"-24""
DESIGNER
TO SPECIFY,
SEE NOTE 2
6" MIN.
3'-6" MIN.
6"
TAPER, (TYP.)
6"
TAPER GUTTER AT CURB CUT TO MATCH
GUTTER SLOPE UPSLOPE AND
DOWNSLOPE OF CURB CUTROADWAY STREAMBED
COBBLES,
SEE NOTE 3
12"
A
ROADWAYINFL
O
W
CURB
SEE NOTE 1
SPLASH APRON
GENERAL NOTES:
1.BOND NEW CURB AND GUTTER TO EXISTING CURB AND GUTTER WITH EPOXY AND DOWEL CONNECTION, IF RETROFITTING INTO EXISTING
CURBLINE. REFER TO STD. PLAN 101.10 FOR EXPANSION JOINT DETAIL.
2.SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS.
ROADWAY
SLOPE
INFLOW
2.5
1
SECTION A
2" GUTTER DEPRESSION
AT FLOWLINE
18''1" DROP TO COBBLES
6" MIN. FREEBOARD
BIORETENTION FACILITY
GUTTER UPSLOPE AND
DOWNSLOPE OF CURB CUT
TYPICAL SIDE SLOPE
COMPACT SOIL BELOW
COBBLES, SEE NOTE 4
NOTES:
1.SEE STD. PLAN 262.20 FOR EDGE TREATMENT OUTSIDE INLET AREA.
2.INLET CURB CUT WIDTH SHALL BE 24" ON GUTTER SLOPES ≥ 5% AND 18" ON GUTTER SLOPES < 5%.
3.STREAMBED COBBLES SHALL BE 6" COBBLES PER WSDOT 9-03.11(2). COBBLE PAD TO BE 8" THICK, WITH 1:1 SIDE SLOPES, TAPERING TO 12''
WIDE AT FACILITY BOTTOM.
4.COMPACT BIORETENTION SOIL MIX UNDER COBBLES TO 90% MAX STANDARD PROCTOR DENSITY (ASTM D698).
4" CRUSHED SURFACING
TOP COURSE
8"
UNCOMPACTED BIORETENTION SOIL
MIX (BSM), SEE STD. PLAN 262.60
2"-4" ARBORIST WOOD CHIP
MULCH, SEE STD. PLAN 262.60
18" MIN.
1
1
PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEGregg Zimmerman
Public Works Administrator
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
BIORETENTION - CURB CUT INLETS
STD. PLAN - 262.30
A
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9/28/2018 | 9:45 AM PDT