SW6200905_1669-PIPE CALCS_20201008

1669 — Currin Property Subdivision
*Cross pipe calculations use 25-year storm
intensity
Tc = 17 min, use 15 min
Kerby: L = 366 ft, s = -0.05, n = 0.4
DA=3.86ac
C = 0.55
1 = 5.89 i n/h r
Q = 12.50 cfs
Pipe 2
Tc = 16 min, use 15 min
Kerby: L = 315 ft, s = -0.05, n = 0.4
DA = 2.13 ac
C = 0.55
1 = 5.89 in/hr
Q = 8.57 cfs