SW6230705_Design Calculations_20240304 (7)

SERENTIY
SCM#12
SCS curve number
Hydraulic Soil Group: A
Area SCS CN
Building(sf) 120,792 98
Sidewalk(sf) 13,086 98
Pavement(sf) 46,238 98
Pond(sf) 12,508 98
Open space(sf) 235,326 49
Offsite-open space(sf) 0 49
Offsite-impervious(sf) 22,089 98
Total(sf) 450039 72
Total(ac) 10.33
Rational Coefficient
Pre-development Post-development
Area C Area C
Building(sf) 0.95 Building(sf) 120,792 0.95
Sidewalk(sf) 0.95 Sidewalk(sf) 13,086 0.95
Pavement(sf) 0.95 Pavement(sf) 46,238 0.95
Open space(sf) 450,039 0.30 Pond(sf) 12,508 0.95
Offsite-open space(sf) 0.40 Open space(sf) 235,326 0.30
Offsite-impervious(sf) 0.95 Offsite-open space(sf) 0 0.30
Offsite-impervious(sf) 22,089 0.95
Total(sf) 450039 0.30
Total(ac) 10.33 Total(sf) 450039 0.61
Total(ac) 10.33
01 Coefficient-12.xls Printed 3/4/2024