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  1. RMC123

    New Opening in CMU Wall - Shear Friction?

    GC_Hopi: A few questions about your photo...How wide is your opening? Are those through bolts, or did you have them grout the header row of CMU to fasten into solid block? dik: Appreciate that response! Getting into the fine details a little bit...in order to work around the root radius at the...
  2. RMC123

    New Opening in CMU Wall - Shear Friction?

    For reference, the load is only about 500 plf unfactored. That is Dead_roof, Dead_block, Live_roof. There is 64" of block above the opening. jayrod12: I'm not sure what you mean by "have them grout it full as required to promote load transfer" JLNG: I've also seen it done successfully but now...
  3. RMC123

    New Opening in CMU Wall - Shear Friction?

    I have an existing CMU wall which is made of 8" block and assumed to be unreinforced. The wall is 17' tall and we want to create an opening that is 11' wide by 12' tall. I want to use 10" channels on each side of the block above the new opening. There will be through bolts connecting the the...
  4. RMC123

    Connecting Element Rupture Strength at Welds

    Thanks for the reply, Hokie! So really the only way to reduce the HSS wall thickness is to reduce the weld size? Is a 3/16" fillet weld on both sides common on a single-plate connection detail? It seems small. When looking at the AISC Design Example K-6 (v14.1), they used Equation K1-3 to...
  5. RMC123

    Connecting Element Rupture Strength at Welds

    Hello, This is my first post, so bear with me. I am looking to design a Single-Plate Shear Connection using AISC Steel Construction Manual, 14th Edition. Ideally, I want to use Table 10-10a, following the conventional configuration, to quickly/easily pick a connection that will work based on...

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