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Hi, I'm new to storm detention design. Current I have A PROJECT NEEDS TO REPLACE TWO OVERLOW STRUCTURES W/ A LARGER SIZE OVERFLOW STRUCTURE, KEEPING IE same (known), KEEPING POND STORAGE SAME (number unknown). so is there any easy way to calculate or any software for the new overflow structure...

I'm doing a fish passage box concrete culvert design using STREAM SIMULATION design option, from HY-8 the Velocity at outlet (10 Years discharge) is 9 f/s, more than the standard requires maximum velocity for fish which is 5 f/s. One is that right? some one tells me if using STREAM Simulation do...

Hi, this is my first time do the Cul-de-sac design. I know I should show the Cul-de-sac center line proposed profile on Plan sheet, but Not sure if I need show the proposed Pavement Edge profile on plan sheet. if not shown in plan sheet, using the cross section to control the pavement edge...