![]() ![]() Where are you? Industry standard and a lot of the US is SWMM built by the EPA. ![]() Wr engineer but SW not my area of expertise. I’ve used HydraFlow Storm Sewers with some success, and I know it’s capable of this, although I’ve not used it for this specific application before. That said if you do want to get it all together, the HydraFlow extensions that come with Civil3d work pretty well. In these kinds of situations there’s not really a big need to model the entire system together IMO. Then drop the inlets in somewhere before that point.Īt that point you have an easy sizing calc for the pipe based on the slope. Find the point on the street where capacity is exceeded. Whatever the difference is - say 15 CFS - size an inlet pair that will capture that amount. So for simplicity let’s say you know the total flow of the drainage area and it’s bigger than the capacity of the street. Then based on my proposed flows, if the capacity is exceeded at a point I drop in a pair of curb inlets. What I do is set up a cross section for the road and calculate the capacity at a given slope. I use FlowMaster in this situation, although I think my methodology is different from what you’re asking. ![]()
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