SW6201003_Calcs (CN)_20201201

1617 - VAR Ph IV
Storm Water Control
SCS curve number
Hydraulic Soil Group :B
AreaSCS CN
Building (sf)243,60098
Pavement (sf)76,37398
Open space (sf)384,58461
Offsite -open space (sf)49
Offsite -impervious (sf)98
Total (sf)70455778
Total (ac)16.17
Rational Coefficient
PredevelopmentPostdevelopment
AreaCAreaC
Impervious (sf)00.95 Building (sf)243,6000.95
Open space (sf)704,5570.30 Pavement (sf)76,3730.95
Open space (sf)384,5840.30
Total (ac)7045570.30 Offsite -open space (sf)0.30
Total (ac)16.17 Offsite -impervious (sf)0.95
Total (ac)7045570.60
Total (ac)16.17
1617 coefficient.xlsPrinted 11/20/2020