SW6230705_Design Calculations_20240304 (42)

SERENTIY
SCM#16
Drainage Area: 548,797 sf
12.60 ac
Impervious Area: 285,107 sf
6.55 ac
%Impervious: 52.0%
1 inch Storm Event:
Rv=0.05+0.009 I
Rv=runoff coefficient
I=percent impervious
Rv= 0.5176
For volume that must be controlled:
Volume=3,630*Rd*Rv*A
Volume required: 23,670 cf
Volume provided: 25840 cf
Average depth: 4.2 ft
SA/DA ratio 1.52
Required surface area: 8342 sf
Surface area provided: 12144 sf