Does anyone know if there are tables or information for precast concrete beams from the late 50's to 60' for I-beam shaped beams (not rectangular). Here is a typical designation on the old plans C.J. 14x4 .51/120 (it may also be 1.20 due to the quality of the plans) or C.J. 8 x 3-1/2 .22/.81 Or...
I am looking at the addition of a mechanical unit on a steel joist roof. The unit is resting on a steel beam on one long side of the unit and a joist on the other. ASCE7-22, Figure 30.3-2A, note 5 states there are different pressures near the parapets (see attached). The positive (downward)...
I was at a jobsite yesterday and the generator exhaust pipe was running close to/touching the concrete beam overhead. See attached pictures. There is maybe 1/2" thick insulation wrap around the pipe. I have reviewed the Florida Building Code and NFPA37 for guidance on this and the most...
thread507-419698 just wanted to follow up on this thread. There is an equation for Nreq in Blodgett's Design of Welded Structures book. Page 5.2-2 equation (2): N = R/(t_w*(0.75*sigma_y))-K
Do you think that equation is valid for Table 10-6?
