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  1. pigdog

    Mckintosh vs SPT vs CPT tests

    Hello, I have acquired doubt regarding the trustworthiness of the N from SPT, though you do get a soil sample for testing and classification. Could someone please give me a brief description and comparison of Mckintosh, SPT, and CPT probes? What is a Mackintosh probe? What would be the upper...
  2. pigdog

    Electric Logs

    Has anyone used down-hole logging instruments to map sand and clay layers in a shallow (100') environment? The oil boys do this all the time for deep holes. What parameters would you use and what would it cost in the southeast U.S.? Thanks, roger
  3. pigdog

    Temporary foundation on wetland

    We have heard that temporary approaches to temporary detour bridges soon will have to be designed, installed and removed without compacting the existing wetland/bogs. Any experience on this? Is geofoam a candidate? Thanks roger

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