sizing pipes based on post developed flows
sizing pipes based on post developed flows
(OP)
just curious when designing storm sewers should you use the post developed controlled flow or uncontrolled flow?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
sizing pipes based on post developed flows
|
RE: sizing pipes based on post developed flows
RE: sizing pipes based on post developed flows
RE: sizing pipes based on post developed flows
RE: sizing pipes based on post developed flows
If development is humming in the area post developed for the drainage plan is normally good. But if you may be waiting for upstream improvements make sure you check on what happens with the emergency spillway. In the country spillways tend to have unimpeded outlets, but your spillway may have a major road or neighborhood there now or in the future. In this case your 100 or less frequent spillway could harm people and your only defense is that you hoped upstream improvements would have been built quicker.(especially if your basin and improvements coveredup a natural drainageway)
You see this in some detention basins or flood control dams where orifices are added after upstream improvements go in. It is also pretty common for large upstream tracts to get opened up making for an interim condition that is pretty bad for runnoff events.