HomeMy WebLinkAbout217.50DENSELY VEGETATED FOR A
MIN. OF 100' AND SLOPE
LESS THAN 5:1
PRESSURE -TREATED 2"X10"
L11
2:1
TI 1' MIN.
I
T MIN. w.
SPREADER MUST BE LEVEL TREATED 2"X10" MAY BE ABUTTED
END TO END FOR MAX. SPREADER
LENGTH OF 50'
6" MIN.
6" MIN.
I I III III I I III III III III -I--� I III III III I I I
18" MIN. REBAR SUPPORTS 8' MIN. SPACING
ALTERNATIVELY, 6" DIA. CMP MAY BE USED AS A SPREADER.
THE PIPE SHALL BE BURIED SO THAT ONLY 1" EXTENDS ABOVE GROUND.
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1" MIN.
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NOTES
1. CONDITION 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 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.
3. MAINTENANCE STANDARDS
3.1. ANY DAMAGE TO THE SPREADER SHALL BE IMMEDIATELY REPAIRED.
3.2. THE DOWNSLOPE AREA SHALL BE CHECKED FOR SIGNS OF EROSION AND VERIFY THAT THE SPREADER IS NOT FUNCTIONING AS A
POINT OF DISCHARGE.
3.2.1. ANY ERODED AREAS SHALL BE IMMEDIATELY STABILIZED, AND THE CAUSE DETERMINED AND ELIMINATED IF POSSIBLE.
Y � STD. PLAN - 217.50
y + PUBLIC WORKS LEVEL SPREADER DETAIL
�Nzo� DEPARTMENT AND CROSS SECTION
MARCH 2008