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  • Users: cpiedra23
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  1. cpiedra23

    Soil / Earth Seismic Load on Structures on Slopes

    i remember there's some code line that says something to the effect of, where structures sit on sloping grades where the grade difference between the two opposing sides is 6' or over, the structure's LFRS shall be designed for seismic forces from the soil. is this clause in the IBC somewhere...
  2. cpiedra23

    Wind Load on Trellis

    thread507-244903 i have a circular domed trellis (see attached picture. is a half circle (180 degrees) with radius of about 6'. the trellis is continuous in and out of the page. the cmu wall on the right in the picture is not continuous but only columns spaced every so often. the wall on the...
  3. cpiedra23

    Curved WT Beam

    i have an architect who would like a curved WT9x38 beam, with the flange on the outer most radius of the curve. The radius is about 5'4" and makes a half a circle. i'm worried whether this is possible with the WT beam. i see the web buckling during bending but what do i know. could make this...
  4. cpiedra23

    CMU & Concrete 'Shear Friction', Development Lengths

    hey guys. please see attached detail. http://files.engineering.com/getfile.aspx?folder=66805665-7dff-4311-b64d-6f0798f8a746&file=20160503_095833.jpg i'm checking the CMU wall anchorage for out of plan loads per ASCE 7-10, Sect. 12.11.2.1 i thought i should check the hook development length...
  5. cpiedra23

    ACI 318-11, Appendix D, D.3.3.4.3, Upset Threads and Stretch Length

    I've been studying the referenced ACI code section, specifically (a)3 and a(5), and am having a hard time understanding what exactly 'stretch lengths' are, how it's detailed, the benefits of its use. Also, I can't find a clear definition/explanation of what 'upset threads' are. I've tried...
  6. cpiedra23

    Chain Link Fence with Slats - Percent Opening

    thread507-293723 Please reference the above thread; for a typical chainlink fence (for, say, playground or other similar conditions), which has vinyl slats in them, what percent opening would be recommended for wind loading? I've used 60% in the past, but I'm hoping that's too conservative. Gulp.

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