HomeMy WebLinkAboutSW6201202_Calcs (Pipes)_202012101691— Faithwill Farms Subdivision
*Cross pipe calculations use 25-year storm
intensity
Tc = 42 min; use 45 min
Kerby: L = 713', s = 0.004, n = 0.4
DA = 3.59 ac
C = 0.45
1 = 3.72 in/hr
Q = 6.01 cfs
Pipe 2
Tc = 47.7 min + 16.7 min; use 1 hour
Kerby: L = 1,034', s = 0.005, n = 0.4
Kirpich: L = 1,054', s = 0.0025
DA = 24.32 ac
C=0.25
1 = 2.51 in/hr
Q = 15.26 cfs