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  1. noroc

    Leakage test for RGRCP

    How much leakage should be speciffied for a Rubber Gasketed Reinforced Concrete Pipe, class B-25 , ASTM C361? There are any standards regarding maximum laekage allowance for this kind of pipe? Can the pipeline meet 20 gals/24 hrs/inch dia/mile? Thanks
  2. noroc

    Leakage allowance on RCP pipeline

    How much leakage should be speciffied for a Rubber Gasketed Reinforced Concrete Pipe, class B-25 , ASTM C361? There are any standards regarding maximum laekage allowance for this kind of pipe? Can the pipeline meet 20 gals/24 hrs/inch dia/mile? Thanks
  3. noroc

    "n" and "k" values for 6" PVC

    The Manning n depends on many factors, such as corrosion, sliming, and joint offsets, which occur in aged sewers. The Manning n for new PVC pipe is 0.009 and a mature pipe can be conservatively estimated at 0.011. http://www.vylonpipe.com/techsheets/Clay%20Pipe%20Flow%20Comparison.htm
  4. noroc

    THERMAL DEFORMATION/EXPANSION

    Go to www.kwhpipe.ca website
  5. noroc

    Heat transfer coefficient for soils

    What are the limit values for the coefficient of heat transfer for soils?<br>I am trying to calculate if have a forest fire (very dry native soil), how much is the soil temperature 2 ft. bellow surface?<br>Thanks<br>
  6. noroc

    Earth loading on a sewer line

    I’ve run into a situation where a PVC storm water line has to be installed in an area where the native soil is “muddy” with maybe a max. 100 psi E’ (soil modulus of elasticity) <br>I would like to use as bedding/backfill material 0.75” crushed rock.<br>The question is how wide the trench needs...
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