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  1. vicky2507

    Cutoff walls in Culverts

    Thank you so much for your comment guys. I appreciate the references to HEC-14 and the "Concrete Culverts and Conduits" publication. This will be very useful. Racookpe1978 thanks for the input on seeing culverts fail because of erosion or washout from the downstream side. This will definitely...
  2. vicky2507

    Cutoff walls in Culverts

    Hello I have a general question about cutoff walls. I understand the general idea that cutoff walls prevent piping beneath a culvert. In the specific case of a culvert used to convey a brook under a road, I see the need of installing the wall in the upstream side but I can't explain why we...
  3. vicky2507

    HELp3 Model for GEocomposites

    How do you reconcile the geocomposite thickness calculated with HELP3 and what's available on the market.? I am trying to design a landfill cap that includes a geocomposite layer for lateral drainage. However tt seems that the results calculated with help3 are valid as long as the head on top...
  4. vicky2507

    Normal depth vs Critical depth

    Hi I have the follwoing question In which cases should I use normal depth as design parameter for gravity flow in pipes? I know that for culverts I have to make an analysis of the critical depth and determine the flow profile as critical or sub critical since the capacity of the pipe can not...
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