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  1. RytheHVACer

    Soil Compaction

    Thanks for the info!
  2. RytheHVACer

    Soil Compaction

    Good afternoon, I'm a mechanical engineer doing a project which consists in part of sawcutting and excavating some soil below the slab. My structural engineer just got back to me by email saying - "Compact to 95% SPDD". Just wondering what SPDD stood for? Thanks.

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