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  1. VR1963

    stormwater storage

    Based on my limited experience, I would not use chambers. The one project I used them required complete excavation to restore capacity, the bottom was completely fouled. Use a pipe system that permits some level of cleaning.
  2. VR1963

    Parking Lot Drainage

    I am looking for a practical reference for guidance on designing drainage specifically for parking lots: Do's/Don’ts Max/Min slopes Max/Min distances No. of Catchbasins Recommended Layouts Sizing Catchbasins etc.
  3. VR1963

    Groundwater Dewatering

    Thank You murph for the reply,<br><br>The following is a problem description:<br>Total Aquifer Thickness:&nbsp;&nbsp;200 ft, Unconfined<br>Hydrogeologic Unit 1: Sand w/K = 1000 ft/day and 40 ft thick<br>Hyd. Unit 2: Limerock w/K = 500 ft/day and 50 ft thick<br>Hyd. Unit 3: Limerock/Sandy...
  4. VR1963

    Groundwater Dewatering

    After several weeks of looking for simplified solutions to dewatering problems, I only found solutions to textbook type problems.&nbsp;&nbsp;Real world problems, where partial penetration and flow exclusion are used, are not easily solved using textbook solutions.&nbsp;&nbsp;<br><br>Has anyone...
  5. VR1963

    Groundwater Dewatering

    WOW, thanks for the lead. I am very impressed with CIRIA.<br> <br> Thanks for your help
  6. VR1963

    Groundwater Dewatering

    Ginger,<br> <br> Thank you for the response. Please forgive my ignorance, but what does CIRIA stand for and how can I get information/reports from CIRIA?<br> <br> Best Regards,<br> <br> VR1963<br> <br> PS. I have not found simple/practical solutions for estimating flow rate/drawdown...
  7. VR1963

    Groundwater Dewatering

    I am currently working on assembling a guide for estimating flow rate and radius of influence for groundwater dewatering in South Florida. To accomplish this, I am looking for field data. Anyone that may have field data collected during dewatering can forward it to: <A...
  8. VR1963

    TR-20 Lag Method - proper use

    The Rational Method is the Rational Solution here. However, if you are required to use it by local agency, they should have criteria establishing its use. For example, in Miami-Dade County, Florida, the local agency provides recomendations for estimating tc for local conditions as well as...
  9. VR1963

    Any one know of a computer program or procedure for designing the wet

    Thanks dycster,<br> <br> Can I get SWMM from EPA of their web site?<br> <br> Currently, I use a spread sheet to estimate the inflow using a method similar to SCS's <br> hydrograph. I plot the inflow hydrograph and treat it like a reservoir problem to estimate flow <br> rates. I then use...
  10. VR1963

    Any one know of a computer program or procedure for designing the wet

    I agree. However, when multiple pumps are used to adress multiple deisgn storms it gets tricky. For example, three pumps can be used so that only one pump satifies a 1 yr storm and a second pump kicks in to support the first pump (lead pump) for a 5yr storm, and the third kicks in so that all...
  11. VR1963

    Any one know of a computer program or procedure for designing the wet

    Any one know of a computer program or procedure for designing the wet well of stormwater pump station to match (as close as possible) pump curves with inflow hydrographs from a 24 hour SCS type storm?
  12. VR1963

    Groundwater Dewatering

    I am looking for a simple (relatively simple) method to approximate the dewatering rate for an unconfined aquiferwhere sheet pile (cofferdam) is used to provide flow cutoff (minimize flow). SHeet pile and well point system do not fully penetrate aquifer.

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