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  1. Kman57

    Non-building Structures Similar to Buildings

    I have a free standing, 4 column concentric braced frame stair access tower in a seismic design category D zone. It can be classified per ASCE 7-05 table 15.4-1 as an ordinary concentrically braced frame, whereby you have to either design it as a building or use a low R value of 1.5. As far...
  2. Kman57

    Specifications for Slip-Formed Concrete Silos

    We are in the process of writing a specification for design and construction of a slip-formed concrete silo. We are trying to find a standard or "go by" spec to help us, but have had no luck finding one so far. Any ideas of where we could find a detailed spec to consult?
  3. Kman57

    Yield Stress for Old Reinforcing Bars

    I'm evaluating some concrete beams that were designed in 1926. Any idea what the yield stress for reinforcing bars from that era is?
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