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  1. vgillespie

    Soil Resistivity and Reinforcing Corrosion Protection

    Is there a guidline for how to specify the type of corrosion protection on foundation reinforcing steel based on the soil resistivity (ohm-meters)? At what level (ohm-meters)is the soil non-corrosive and when would you provide epoxy coated rebar or cathodic protection?
  2. vgillespie

    Concrete Slabs on Metal Deck governing code

    Low strength concrete on metal deck. I am working on a small building that has low concrete breaks. I specified 3000 psi but even after 54 days of curing and taking core samples for testing the strength is about 1800 psi. The beams will still work for stress without composite action but non...
  3. vgillespie

    Concrete Slabs on Metal Deck governing code

    Which code or standard governs the design for the concrete strength and control joint spacing for elevated slabs on metal deck? What is the minimum strength of concrete that can be used on a composite concrete slab on metal deck? What is the criteria for depth and spacing of control joints...
  4. vgillespie

    Ceramic Backer Bars on Full Pen Welds

    Does anyone know of a good reference I could use to become more familiar with using ceramic backer bars in full pen welds in beam to column moment connections in seismic "zone 2" or Av=0.12?
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