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  1. ERC123

    ASTM D1557-58t ?

    Thanks for the help oldestguy. I figured this was the case but I just needed to be shure.
  2. ERC123

    ASTM D1557-58t ?

    When the modified proctor came out in 1958 did it require 3 layers or 5 layers when pounding soil into the mold. I know that it is currently 5 layers and has been that way at least since 1970 but I do not have a copy of the original method. I also know that the standard proctor, ASTM D698 is 3...
  3. ERC123

    Pressure Treated Timber Lagging

    I’m looking for literature on pressure treated timber lagging service life. This would be for a permanent soldier pile wall with pressure treated timber lagging that has been backfilled. What is the life expectancy of the timber lagging and how does it brake down if at all over its service...

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