SD Capacity for Constant Rate
SD Capacity for Constant Rate
(OP)
Hi! A new water well will be drilled and for the constant rate test we will discharge 1500-1800 gpm for 24 hours. We have a concrete rectangle channel which leads to a 12" diam AC drain line. I have the following information:
Concrete Channel
S= 0.005
Width = 24"
Height = 32"
n = 0.012
12" AC drain
S=0.05
n = 0.011
Using Manning's Eq. Q = 37.6 cfs, R = 0.73 for concrete channel and Q = 9.5 cfs for 12" drain where R = 0.25.
I think I have all the information I need to determine if the channel and drain line can handle the capacity but I am not exactly sure how to approach it. Can someone please help me?
Concrete Channel
S= 0.005
Width = 24"
Height = 32"
n = 0.012
12" AC drain
S=0.05
n = 0.011
Using Manning's Eq. Q = 37.6 cfs, R = 0.73 for concrete channel and Q = 9.5 cfs for 12" drain where R = 0.25.
I think I have all the information I need to determine if the channel and drain line can handle the capacity but I am not exactly sure how to approach it. Can someone please help me?





RE: SD Capacity for Constant Rate
1800gpm x 1cf/7.48g x 1m/60s = 4.01 cfs flow for the well.
The flow depth for the GIVEN FLOW is 0.48 ft. in the channel and 0.46 ft. in the pipe using Manning's (both below capacity as you indicated).
RE: SD Capacity for Constant Rate