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  1. CivilNJEP

    Pond Liners above permanent pool

    Does anyone know what is the minimum height above the permanent pool in a wet pond that a pvc liner should be installed at? I was thinking of specifying 1 ft. Any suggestions?
  2. CivilNJEP

    Rooftop Detention

    What is the flattest a typical warehouse roof can be? Given the large size of the building (300k sf) we are assuming bays 50 ft by 50 ft.
  3. CivilNJEP

    Rooftop Detention

    Can detention of 2.8" of rain be detained on top of a warehouse roof without adding any additional cost? We are trying to obtain city approval for development but there isn't a structural engineer on the team yet. As part of standard structural calculations, the typical rain/snow loads (40psf...

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