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Small site dry well sizing for 10 year storm

Small site dry well sizing for 10 year storm

Small site dry well sizing for 10 year storm

(OP)
thread162-321197: Rainfall Duration for Design Purposes

"As indicated by psmart, the Tc is very small (less than 5 minutes). Thoughb the municipality expressed that it would be up to the engineer to choose a rainfall duration for design. I guess I should choose a standard duration but I do not know what that standard would be."

The OP indicates a small site since the Tc is "less than 5 minutes". It is common industry practice to simply use the Modified Rational Method to approximate a reasonable runoff volume for the needs of a small site.

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