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Can you anyone recommend any good/great companies who sell structural CAD/Revit details including steel and concrete details? Thanks,

Does anyone know and recommend what kind of small software/spreadsheet that can design tool seismic restraints (anchors)? Thanks a lot,

I'm designing a catwalk, use 1/8" steel plate for 1'-8" deck span. I calculated 1/8" steel plate is OK for 300 pound concentrated load over the 1'-8" span. But someone told me 300 pound concentrated load does not work on 1/8” plate per Building Code of New York State. Minimum 3/16" steel plate...

I use 0.14 as the fuel characteristic constant in the venting equation of NFPA 68 to calculate the explosion relief area for trichloronsilane (TCS, flammable gas). Is it proper? Should I use 0.17 (maximum) for it? I'm design a HPM room and have a very limited exterior surface area I can use for...

When calculating the actual vent area, should the frame area of vents be deducted from opening area? Thanks,

I am working on connection detailing of very long custom steel trusses. They are about 168 ft long, 28 ft deep, 8 bays. I use W14-shapes as top and bottom chords, and steel tubes as vertical and diagonal webs. What is the best way to connect them? I am thinking use gussets to connect them, weld...

I am designing a concrete slab with many small circular openings using FEA from STAAD. I am wondering two questions. First, what loads should be applied in FEA? Real dead and live loads (D+L) or factored loads (1.2D+1.6L)? Second, after the FEA analysis, how to compare the compressive/shear...