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I am not so worried about the anchorage, cable, etc. itself as it is being spec'd by a well known safety harness supplier. What I am worried about is the beam buckling laterally. I am trying to get the load smaller so I can manage the LTB/torsion of the roof beam. I understand the geometry...

I have been asked by a client to analyze installing a 1/2" steel cable that spans 40 feet to existing roof beams. Before I analyze the roof beams, I need to know the lateral force caused by the cable. The client asked if the cable could sag 2". I take a 250# person falling at midpoint of...

I am having trouble trying to understand a section in ACI 301-10 "Specifications for Structural Concrete" regarding grout-cleaned rubbed finishes on concrete surfaces, section 5.3.3.4.b. In previous editions of ACI 301, specifically versions 99 and 05, there is a curing note to keep the surface...