Here's the situation...got a lake adjacent to the property were designing with an existing spillway structure. I am trying to come up with some calculations showing that the spillway and outlet pipes will be fine with our additional development.
For simplicity sake, the spillway is basically...
"But! If the basin is on a ridge how does runoff reach it ? Do you pump 25 cfs ( 12,000 gpm !) ?"
Part of the development we're designing is above this basin so once the stormwater system is in place it will drain to the basin. Right now they are calling for it to be placed on a ridge between...
Not sure if my brain hasn't started working or what (I just got back from vacation)....
How can I determine what size detention basin I need with a calculated Qin and a specified Qout using the rational method. I can do it using TR55, but all my other calcs are based on rational so I'd rather...
With a 4-inch square orifice, which is roughly what I figured it should be, I still have almost 4500cf left after 48 hours. At 36 hours it's still over 6300cf.
The more I look at it, it looks like the discharge will just out to infinity. The only way to ever reach a flow of 0 is when "h"...
We only have a couple computers here with programs that'll do a hydrograph for the discharge from a detention basin. Lucky for me they are both laptops that tend to be out of the office a lot.
I'm trying to do a hydrograph so I can determine the orifice size to drain a given volume over a 36...
I'm working on problem number 111 in the NCEES Sample Questions concerning minimum area for reinforcing steel.
Working backwards from the solution, I've got most of it figured out except where they are figuring the reinforcement ratio. I have absolutely no idea where they are getting it from...
