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Recent content by PDaddy

  1. PDaddy

    supporting access hatch on concrete slab

    We are rehabilitating an existing underground transformer vault in a sidewalk. Part of the top slab of the vault is a removable 8" (or 9") thick 1-way concrete slab (7.5ft span) with a 4ftx4ft aluminum double-leaf access hatch (Bilco). The 5.5" deep support shelf of the hatch needs to be...
  2. PDaddy

    bracing

    I have a 5.5m column from the footer to the top of the building. It is connected to a ringbeam thats extending from the building. This column and ringbeam is for a patio. How do I brace the both of them?
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