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Infiltration Trench in Storm & Sanitary Analysis (old StormNET)

Infiltration Trench in Storm & Sanitary Analysis (old StormNET)

Infiltration Trench in Storm & Sanitary Analysis (old StormNET)

(OP)
I am working on a hydraulic model for a park on top of a parking structure. The drainage system is laid out to be a series of perforated underdrains surrounded by a stone bed. Since this system was designed with 300+ structures, I am trying to determine the best method to approach utilizing the stone storage. I know we will need the stone in order to meet the City's storm even requirements. Is there a way that I can account for the stone surrounding each pipe by modeling an "equivalent" larger pipe size for the underdrain? Any help or advice on this would be greatly appreciated! Thanks!

RE: Infiltration Trench in Storm & Sanitary Analysis (old StormNET)

Not that I know of. You could report and then argue the case for the amount of available void space, perhaps.

Look at the LID capabilities provided in EPA SWMM 5 to model this.

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