HomeMy WebLinkAboutWPO201600055 Calculations 2016-09-15 : : ELEMENT
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September 15, 2016
Klein Sediment Trap Calculations
Trap Capacity
- Drainage area= 1.46 ac
- Initial Storage Volume= 134cuyd *1.46= 194.64 cu yd
o Wet Storage= .5* 194.64=97.82cuyd
o Dry Storage= .5* 194.64=97.82cuyd
Wet Storage Volume Calculation
V1=0.85xA1xD1
V1=Wet Storage Area
V1= .5* 194.64=97.82cuyd; 97.82cuyd/.037cuft/cuyd=2,644cuft
(based upon 1/2 drainage area depicted)
A1=Surface area of the flooded area at the base of the stone outlet in square feet
A1=1250sf(based upon plan area of basin as depicted on ESC-02)
D1= Maximum depth in feet, measured from the low point in the trap to the base of the stone outlet
D1=V1/(0.85*A1)= 2644cuft/(0.85*1250sf)=2.48ft
Dry Storage Volume Calculation
V2= ((Ai+A2)/2) * D2
V2= Dry Storage Area
V2= .5* 194.64=97.82cuyd; 97.82cuyd/.037cuft/cuyd=2,644cuft
(based upon 1/2 drainage area depicted)
A1=Surface area of the flooded area at the base of the stone outlet in square feet
A1= 1250sf(based upon plan area of basin as depicted on ESC-02)
A2=Surface area of the flooded area at the crest of the stone outlet(overflow mech)in square feet
A2=2000sf(based upon plan area of basin as depicted on ESC-02)
D2= Maximum depth in feet, measured from the low point in the trap to the base of the stone outlet
D1=V2/((Al+A2)/2) =2644cuft/((1250sf+2000sf)/2) =1.63 ft
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