SW6230705_Design Calculations_20230831 (8)

SERENTIY
SCM#12
Drainage Area: 450,039 sf
10.33 ac
Impervious Area: 192,624 sf
4.42 ac
%Impervious: 42.8%
1 inch Storm Event:
Rv=0.05+0.009 I
Rv=runoff coefficient
I=percent impervious
Rv= 0.4352
For volume that must be controlled:
Volume=3,630*Rd*Rv*A
Volume required: 16,322 cf
Volume provided: 21060 cf
Average depth: 3.6 ft
SA/DA ratio 1.4
Required surface area: 6301 sf
Surface area provided: 12508 sf