MANPIP

[Jerussi]

I believe it needs to ask for Q= also. You are correct that if the variable was input it would display in the results and nothing would need to be entered.

For example: I would enter N=0.013, Q=12 (CFS), D= no input, S=.01 (for 1%), Y= no input and it would calculate the size pipe in diameter (inches) required to flow 12 CFS at 1% in a concrete pipe with a N=0.013.

or I could enter N=0.013, Q= no input, D=15 (inches), S=.01, Y= no input and it would calculate the flow "Q" in CFS that a 15 inch concrete pipe can carry at 1%.