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  1. AELLC

    Combined actions - Bending and Shear, Bending and Compression, etc

    1) That is easy, I input all point loads on my Excel analyzers. 2) That is a matter of using Beamanal or similar excel spreadsheet to analyze, just a little more work than simple support. 3) Struct. steel and concrete columns that are part of moment frames, etc., you need at least RISA-2D to...
  2. AELLC

    UBC 1976 Chapter 33

    Let me know if you found it on the Web, I have the ***original*** here. The first Code I used. The definition of a structural engineer: overdesign by a factor of 1.999, instead of the usual 2.
  3. AELLC

    Factor of Safety Calculation

    The dead load of the earth above the heel of an ordinary retaining wall footing is always considered as restoring, but the vertical component of the applied overturning force is a matter of judgment - for instance, RetainPro gives you the choice. The definition of a structural engineer...
  4. AELLC

    Classic and/or Good Textbooks?

    IDS - I studied that but go nowhere because I don't understand VBA. My old Structural Analysis book makes no mention of Macualay's method, so I haven't a clue there. The Beamanal seemed more suited for my purposes, and I have a "temporary system" I devised in my Excel design workbook that...
  5. AELLC

    Classic and/or Good Textbooks?

    Pirate, you are studying too much, it is Sunday. I work at home, so it's not so bad. Last time I took that kind of test, it was 1983, I don't want to do it again. The definition of a structural engineer: overdesign by a factor of 1.999, instead of the usual 2.
  6. AELLC

    Classic and/or Good Textbooks?

    I can't find any free Microstran - can you please upload it to here? My Excel 2010 should be able to convert it from OpenOffice. I want to see if it works better than Beamanal The definition of a structural engineer: overdesign by a factor of 1.999, instead of the usual 2.
  7. AELLC

    Classic and/or Good Textbooks?

    Yes I am working, a "medium-difficulty" 2-story custom house. I take frequent 10 minute breaks, will you allow me that , huh? (j/k) It's not like I am 22 yrs old, grrrrr. The definition of a structural engineer: overdesign by a factor of 1.999, instead of the usual 2.
  8. AELLC

    Classic and/or Good Textbooks?

    I just want the "Matrix for Dummies" version. I know I understood it - sort of - back at University, but I haven't used it in Real World since. I tried to "reverse engineer" the Beamanal Excel spreadsheet, but it eludes me, and Beamanal doesn't have the cantilever span option. I have to...
  9. AELLC

    Classic and/or Good Textbooks?

    Is there any book that will clearly explain how to set up a matrix (stiffness) analysis for a simple portal frame or continuous beam with option of cantilever span at one or both ends? I have "Matrix Computer Analysis of Structures" (1966) by Moshe F. Rubenstein, but I don't understand it...
  10. AELLC

    Classic and/or Good Textbooks?

    "Pirate: I have found "Foundation Engineering" by Peck, Hanson, and Thornburn (second edition, copyright 1974) to be an excellent reference for the analysis and design of foundations. The book is comprehensive and practical." I have the exact book, one owner (me) - $17.50, bought 1974. But it...
  11. AELLC

    looking for rafter straps

    You've already answered your own question, use Simpson H2.5A with the recommended screws, I believe SD8x1.5" There is another method using one screw thru the roof deck, down thru the middle of the rafter thickness, into the double top plate, but that will not make sense because you say there is...
  12. AELLC

    Collecting a fee

    I still haven't gotten the check from this deadbeat - despite his promise. The definition of a structural engineer: overdesign by a factor of 1.999, instead of the usual 2.
  13. AELLC

    Classic and/or Good Textbooks?

    LOL, all my college textbooks have the original prices stamped on them, mostly all under $20 a pop. The definition of a structural engineer: overdesign by a factor of 1.999, instead of the usual 2.
  14. AELLC

    Masonry Design LRFD vs. ASD

    Hokie, Thanks, very useful. Those Excel sheets I posted above were all based on 0.33*f'm comp in CMU and 24000 psi tension in rebar. The definition of a structural engineer: overdesign by a factor of 1.999, instead of the usual 2.
  15. AELLC

    Masonry Design LRFD vs. ASD

    My guess is that when CMU was allowed to be designed by LRFD, the Code writers didn't "calibrate" the factors to result in approximately the same end result, comparing ASD to LRFD, as they did in wood, concrete, and steel. The old masonry design methods may have been way over conservative. The...
  16. AELLC

    Masonry Design LRFD vs. ASD

    Sorry, wrong file. Use this instead. The definition of a structural engineer: overdesign by a factor of 1.999, instead of the usual 2.http://files.engineering.com/getfile.aspx?folder=dc834de2-87a4-41da-8b9c-cec07b431432&file=CMU_WALL.pdf
  17. AELLC

    Masonry Design LRFD vs. ASD

    Here is a wall design for wind perpendicular to wall, and the #6 @ 16" vert seemed to work fine by ASD. This is an old UBC Code method, probably UBC 1997. The definition of a structural engineer: overdesign by a factor of 1.999, instead of the usual...
  18. AELLC

    Masonry Design LRFD vs. ASD

    Are you sure the uniform gravity load is 12 KLF? That looks unusually large. Give me the dead load and snow loads separately. Unfortunately, this old ASD method includes only the rebar at the very end of the wall, which is ridiculously conservative. At= 0.44 in^2, for one #6 bar. The tension...
  19. AELLC

    Masonry Design LRFD vs. ASD

    When you say 30-40 overstress (ASD) vs 10% extra capacity (LRFD) did you mean allowable shear only, or allow shear, allow compression in CMU , allow tension in rebar, whichever controls? I find that the smallest difference between ASD and LRFD methods is in the calculation of tension rebar...
  20. AELLC

    Worst Workmanship - Deficiencies - Terrible Detail (&/or interpretation) - Crazy Fixes - ETC...

    I wish I had a pic. It was about 1983, near Santa Fe, NM Homeowner was having custom home built - no engineer, unlicensed contractor. She came to the company where I was working to get an Expert Opinion for her lawsuit. House was about 90% constructed of salvaged-from-the-scrapyard materials...

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