SW6230705_Design Calculations_20230831 (24)

SERENTIY
SCM#14
Drainage Area: 658,114 sf
15.11 ac
Impervious Area: 312,662 sf
7.18 ac
%Impervious: 47.5%
1 inch Storm Event:
Rv=0.05+0.009 I
Rv=runoff coefficient
I=percent impervious
Rv= 0.4776
For volume that must be controlled:
Volume=3,630*Rd*Rv*A
Volume required: 26,192 cf
Volume provided: 27108 cf
Average depth: 3.8 ft
SA/DA ratio 1.5
Required surface area: 9872 sf
Surface area provided: 10656 sf