HomeMy WebLinkAbout217.50SPREADER MUST BE LEVEL
1.CONDITIONS OF USE
1.1.MAY BE USED WHERE RUNOFF FROM UNDISTURBED AREAS OR SEDIMENT RETENTION FACILITIES IS DISCHARGED.
1.2.APPLIES ONLY WHERE THE SPREADER CAN BE CONSTRUCTED ON UNDISTURBED SOIL AND THE AREA BELOW THE LEVEL SPREADER IS VEGETATED AND LOW
GRADIENT.
2.DESIGN AND INSTALLATION SPECIFICATIONS
2.1.THE TOTAL SPREADER LENGTH SHALL BE AT LEAST THE SQUARE ROOT OF THE CATCHMENT AREA.
2.2.MAXIMUM LENGTH FOR AN INDIVIDUAL SPREADER IS 50 FEET.
2.3.MULTIPLE SPREADERS SHALL NOT BE PLACED UPHILL OR DOWNHILL FROM ONE ANOTHER.
2.4.THE AREA BELLOW THE SPREADER FOR A HORIZONTAL DISTANCE OF 100 FEET SHALL NOT EXCEED 20 PERCENT AND SHALL BE COMPLETELY VEGETATED WITH NO
AREAS OF INSTABILITY OR EROSION. THE TOPOGRAPHY FOR A HORIZONTAL DISTANCE OF 50 FEET BELOW THE SPREADER SHALL BE UNIFORM SO THAT RUNOFF IS
NOT FUNNELED INTO A SWALE OR CHANNEL IMMEDIATELY AFTER ITS RELEASE.
2.5.THE AREA BELOW THE LEVEL SPREADER SHALL BE SEEDED AND MULCHED.
3.MAINTENANCE STANDARDS
3.1.ANY DAMAGE TO THE SPREADER SHALL BE IMMEDIATELY REPAIRED. ENSURE FLOWS DO NOT BYPASS THE SPREADER AT THE ENDS OF THE SPREADER.
3.2.THE DOWNSLOPE AREA SHALL BE CHECKED FOR SIGNS OF EROSION AND VERIFY THAT THE SPREADER IS NOT FUNCTIONING AS A POINT DISCHARGE.
3.3.ANY ERODED AREAS SHALL BE IMMEDIATELY STABILIZED, AND THE CAUSE DETERMINED AND ELIMINATED IF POSSIBLE.
NOTES:
CEDAR OR PRESSURE TREATED 2"x10"
DENSELY VEGETATED FOR A MIN. OF 100'
AND A SLOPE OF LESS THAN 5H:1V
2
MAX.
1
12" MIN.
3' MIN.
TREATED 2"X10" MAY BE ABUTTED
END TO END FOR MAX. SPREADER
LENGTH OF 50'
6" MIN.1" MIN.
6" MIN.
18" MIN. REBAR SUPPORTS (TYP.)
8' MIN.
LEVEL SPREADER DETAIL AND CROSS
SECTION
STD. PLAN - 217.50
PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEGregg Zimmerman
Public Works Administrator
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
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9/28/2018 | 9:45 AM PDT