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Recent content by ILoaThePats

  1. ILoaThePats

    Thickness for Weld Base Metal Strength

    Thanks for the source WillisV. I still think it's a matter of typical practice where the weld material is matched to the base metal, precluding failure in the fusion zone. If you could weld steel plate to a 'sponge' it might fail in the fusion zone. Can I ask how you were able to locate the...
  2. ILoaThePats

    Thickness for Weld Base Metal Strength

    Hello all, Consider a Flat plate, with a plate Normal to it fillet welded on both sides. Assume the Normal plate is loaded in pure shear (load applied parallel to the base plate, no bending). When checking the base metal strength of the "flat" plate, do you consider the size of the fillet...
  3. ILoaThePats

    Turnbuckle and Shackle Safety Factors for permanent use

    Thanks for the reference WillisV. In our office we typically use a factor of safety of 2, and I've seen some people approach 1.0. If it went to a jury, that's what expert witnesses are for. I see your point though.
  4. ILoaThePats

    Turnbuckle and Shackle Safety Factors for permanent use

    Thanks ameyerrenke. My understanding is that a shackle/turnbuckles rating is the Working Load Limit, or what should safely be applied for rigging applications where load and direction of load application can be highly variable. Because of the variability they have a high safety factor on the...
  5. ILoaThePats

    Turnbuckle and Shackle Safety Factors for permanent use

    What safety factors and strength reduction factors (applied to the ultimate strength) do you use for shackles and turnbuckles that will be permanently installed in a structure?
  6. ILoaThePats

    spiral (helix) metric reinforcement

    Another question: I have two types of wire mesh reinforcement specified in different places: F82 and SL82. Both are 7.6mm x 200mm in transverse and longitudinal directions. What is the difference between the two? Is one deformed bars and the other round bars?
  7. ILoaThePats

    spiral (helix) metric reinforcement

    The structures are modular and they were designed in Australia. I am converting them to imperial for fabrication in the U.S. It's interesting that the common grade for CHS in Australia is 350 MPa since the standard for round HSS here is 290 MPa (42 ksi). Thanks for the available sections...
  8. ILoaThePats

    spiral (helix) metric reinforcement

    Good answers all. Does anyone know what grade of steel CHS sections typically use? I assume it's similar to HSS (42ksi yield, 58 ksi tensile) but there are some CHS sections here that are smaller than anything available in HSS so I was going to use Pipe but Pipe is different than HSS (yield 35...
  9. ILoaThePats

    spiral (helix) metric reinforcement

    Sister companies so it backfired this time!
  10. ILoaThePats

    spiral (helix) metric reinforcement

    Thanks for the input. I found the bolts explicitly referenced as "hold down" bolts in another drawing so I'm sure that what it is. Cog is an odd word on a drawing in the states so I am going to change that to '4 in. hook' instead of 'Cog 100 Bolt' While we're at it what does the...
  11. ILoaThePats

    spiral (helix) metric reinforcement

    Yes it is designed in Australia. That is about what I suspected, thank you. Since it seems you are familiar with Australian design practices, I hope you can clear up a couple other things. The anchor bolts for this structure are M12 Gr.4.6/S H.D. bolts. In some cases this can refer to bent...
  12. ILoaThePats

    spiral (helix) metric reinforcement

    I tried searching for his but did not find anything. I am performing a conversion of a design from metric to english/imperial and I cannot find anything to explicitly tell me the bar size of spiral/helical reinforcement in a cylindrical footing. The callout is as follows: 4-N16 vertical R6...

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