SW6201201_1641 coefficient_20201210

1641 STATIC LINE BREWERY
Storm Water Control
SCS curve number
Hydraulic Soil Group: B & C
Area SCS CN
Building (sf)
7,467
98
Pavement (sf)
56,538
98
Open space (sf)
39,493
70
Offsite -open space (sf)
71,778
70
Offsite -impervious (sf)
287,113
98
Total (sf)
462389
91
Total (ac)
10.61
Rational Coefficient
Predevelopment
Postdevelopment
Area
C
Area
C
Impervious (sf)
40,553
0.95
Building (sf)
7,467
0.95
Open space (sf)
421,836
0.30
Pavement (sf)
56,538
0.95
Open space (sf)
39,493
0.30
Total (ac)
462389
0.36
Offsite -open space (sf)
71,778
0.30
Total (ac)
10.61
Offsite -impervious (sf)
287,113
0.95
Total (ac)
462389
0.79
Total (ac)
10.61
1641 coefficient.xls Printed 12/10/2020