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  1. RobLauder223

    CMU control joint spacing

    I am designing a commercial building in Northern Nevada, 90' x 180' x 24' tall, with 8" lightweight CMU. What should spacing/size of expansion joints/control joints be? Is there an industry reference? what is a common delta-T for temp. differential - 100 degrees F.? Does that control the...
  2. RobLauder223

    ASCE 7-05 Figure 6-20 Solid free-standing walls and signs

    The tables in the figure require interpolation to find exact values for the coefficients. Is there a spreadsheet (Excel or Mathcad) that solves these tables given the variables B, s and h?
  3. RobLauder223

    IBC 2003/ASCE 7-02 wind loads vs. UBC

    Understood. Don't blame you one bit. Do you work in Excel and/or Mathcad? Most of the stuff I do is pretty unsophisticated, i.e., I wouldn't call myself a programmer. What I would have to offer is pretty tame stuff - beams, footings, reinf. concrete, columns, etc. that I expect you already have...
  4. RobLauder223

    IBC 2003/ASCE 7-02 wind loads vs. UBC

    Hmm... are you willing to share your spreadsheet?
  5. RobLauder223

    IBC 2003/ASCE 7-02 wind loads vs. UBC

    Your last sentence said it all - IBC is WAY too comprehensive and laborious for most purposes. And I think you undestood my point - if you look at UBC Method 1 vs. Method 2, Method 2 is very conservative at least as far as horizontal oading goes.
  6. RobLauder223

    IBC 2003/ASCE 7-02 wind loads vs. UBC

    I think I'm ok because I multiplied the table (1609.6.2.1(1)) values by the factor from Table 109.6.2.1(4), which for this Exposure C case is 1.21 (structure is only 14' high). It seems odd that the Zone B and D values are negative - I'm sure that's why my overall windload is less than UBC...
  7. RobLauder223

    IBC 2003/ASCE 7-02 wind loads vs. UBC

    I'm looking for feedback about the 2 codes. For the simplified procedure in 2003 IBC/ASCE 7-02, it appears the loads you come up with (using table 1609.6.2.1(1) and 1609.6.2.1(4))are significantly less than what you get using UBC. comments?
  8. RobLauder223

    Wood deck design 97 UBC

    FYI, I have sent an email to Eldorado County building dept. to get their take on this question, but I know Carson City, NV has interpreted it to require p.t. or redwood. when I hear from them I'll let you know.
  9. RobLauder223

    Wood deck design 97 UBC

    Thanks for the quick response!
  10. RobLauder223

    Wood deck design 97 UBC

    Is there a requirement for structural members exposed to weather (deck joists, girders and posts) to be pressure treated or naturally resistant to decay? Project is in Lake Tahoe area.
  11. RobLauder223

    Roof x-bracing

    I'm looking for typical connection details for rod or cable x-bracing for metal roofs (over 2x wood purlins over wood trusses)with unrated shear capacity for lateral loads. Bay spacing is 16'. Dwg, dxf, or pdf format details would be great. Roof pitch is 3:12. Trusses are 8' o.c. so rods will...

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