Kubota of Fayetteville - 1355-Runoff coefficient calcs (2)

Kubota of Fayetteville
Storm Water Control
SCS curve number
Hydraulic Soil Group :C
Area SCS CN
Building (sf) 22,500 98
Pavement (sf) 148,168 98
Open space (sf) 33,629 39
Offsite -open space (sf) 50
Offsite -impervious (sf) 98
Total (sf)204297 88
Total (ac)4.69
Rational Coefficient
Predevelopment Postdevelopment
Area C Area C
Impervious (sf) 0.95 Building (sf) 22,500 0.95
Open space (sf) 204,297 0.30 Pavement (sf) 148,168 0.95
Open space (sf) 33,629 0.30
Total (ac)204297 0.30 Offsite -open space (sf) 0.30
Total (ac)4.69 Offsite -impervious (sf) 0.95
Total (ac)204297 0.84
Total (ac)4.69
1355-Runoff coefficient calcs.xls Printed 4/30/2018