SW6230705_Design Calculations_20240304 (10)

SERENTIY
SCM#12
Drainage Area: 450,039 sf
10.33 ac
Impervious Area: 214,713 sf
4.93 ac
%Impervious: 47.7%
1 inch Storm Event:
Rv=0.05+0.009 I
Rv=runoff coefficient
I=percent impervious
Rv= 0.4794
For volume that must be controlled:
Volume=3,630*Rd*Rv*A
Volume required: 17,979 cf
Volume provided: 19036 cf
Average depth: 3.6 ft
SA/DA ratio 1.4
Required surface area: 6301 sf
Surface area provided: 9633 sf