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  1. jwkdesign

    More infiltration questions

    It sounds like to me you are designing an underground detention / infiltration system if you have a positive outflow downstream controlled by a weir. Are you sure you need to be seperated from the SHW table by three feet? The NJ BMP only requires a 2' seperation from an infiltration basin, I...
  2. jwkdesign

    Very simple question

    I do not remember the main reasons why we match crown to crown on storm drain pipes. I was asked today and I am drawing a blank. Anyone know why.
  3. jwkdesign

    Hydraflow Hydorgraphs 2007

    Does anyone know how to augment the program to route 150% of the 100-yr design storm?
  4. jwkdesign

    Hydraflow 2004 - Delmarva Unit hydrograph

    I contacted Intellisolve and technical support indicated changing the shape factor does the job. We are working in southern new jersey which requires the use of the Del UH and utilizatio of the Type III 24-hr rainfall distribution. Thanks
  5. jwkdesign

    Hydraflow 2004 - Delmarva Unit hydrograph

    That is the problem, I am utilizing the SCS Type III Hydrograph, altering the shape factor to 285 from the 484 but am not certain that this is correctly utilizing the delmarva unit hydrograph. Thanks for you thought, I am going to give them a call tomorrow.
  6. jwkdesign

    Hydraflow 2004 - Delmarva Unit hydrograph

    I am using the 2004 vs. of Hydraflow and was wondering how you enter the delmarva unit hydrograph into the program. Does anyone have the .cds file type for this or experience with it?
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