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  1. 24J

    Thunderstorm Comparison to Type II Storm Event

    Can anyone point me in the right direction in producing calculations comparing a flash thunderstorm event to say a 25-year rainfall event?
  2. 24J

    Calculating Uplift Under Footing, Retaining Wall

    I have a small section of free-standing concrete retaining wall to design. This wall will serve as the dam wall on a detention system holding some 6000 cu ft of water. The retaining wall height is just 5 feet. The County regulations require that a full uplift under the footing with...
  3. 24J

    [b]Calculating HGL's at Tailwater Depth[/b]

    I have an underground detention system consisting of twin barrells of 60" pipe with a concrete outlet structure. I have sized an 18" RCP outlet pipe to carry flows to a downstream storm drain. I have been asked to calculate the 100-yr hydraulic grade lines for the pond tailwater elevations...
  4. 24J

    Pavement Inlet Design

    There is only one pavement drop inlet in a small commercial design project we are working on. We have been asked to provide pavement inlet design (HEC-12 analysis). Does anyone have any tips?
  5. 24J

    Storm/Flood Engineering

    I have been asked to calculate the 100-year headwater pool elevation at a parking lot sag inlet. Does anyone have any tips?
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