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Recent content by Mattman

  1. Mattman

    Problem, Dilemma and Solution??

    You must do your part to protect the public safety. The first course of action is not an option. As for Option 2, you must use your engineering judgement as to whether the x- and knee bracing is sufficient for stability. Look at it hard and decide on which side of the "borderline&quot...
  2. Mattman

    Bracing for construction

    Your system may work, but there are many varibles to consider, including soil conditions attachment to the structure, etc. It IS the usual practice for the structural engineer of record to only considered the stability in the completed structure; temporary bracing for stability during...
  3. Mattman

    Need some good FE (EIT) Review advice?

    Here is a tip that was given to me that worked great. As you know, the morning portion of the exam covers all areas of engineering, while the afternoon portion gives you the choice of a general exam or discipline-specific exams. When I took the test, all the exams were in the booklet, so you...
  4. Mattman

    specified strength in 1937

    Structural Steel (AISC 3rd Edition, 1937): 20,000psi allowable(extreme fiber tension in bending), A-9 steel. As the 3rd Edition came out in 1937, many still used the 18,000 psi allowable for A9 steel, as given in the 2nd Edition. Rebar: Fy= 40,000 psi, working stress = 16,000 to 18,000 psi...
  5. Mattman

    Structural Design Checklist?

    Rich2001 has posted a FAQ at http://www.eng-tips.com/faqs.cfm?spid=507&sfid=229 with a very good, comprehensive checklist.
  6. Mattman

    Macomber Joists attn: "Mattman"

    bhop- I'll fax you what I have in the morning. I don't have the catalog in front of me; I don't know offhand if the joists you are looking for are in there. Good luck! JAE- You're right! Maybe I should start a consulting firm exclusively dedicated to providing the Macomber catalog to...
  7. Mattman

    Metal Stud and Gyp Wall Movement

    U.S. Gypsum's "Gypsum Construction Handbook" gives this info. It requires relief joints at all columns and control joints for every 30 feet of wall. Go through the book to get the exact references. It is available directly from USG. You can order it in print or get a free pdf copy...
  8. Mattman

    Macomber joist catalog/load tables

    I have the 1972 Macomber catalog (as you may have gathered from the old thread). It includes "V-Beams" and open web girders. I will fax it to you if you send me your fax number. Good luck!
  9. Mattman

    I'm renovating a 1937 building (WPA era)

    I have the 18th edition- 1931- of the Kidder-Parker Architects' and Builders' Handbook. It has a few pages, including sketches, of the Gypsteel system, but no load tables. Here's a synopsis: The Gypsteel system consists of 2-1/2" thick precast gypsum planks reinforced with 3/16" cold...
  10. Mattman

    OSHA Anchor Requirements

    Please see the following thread: thread507-35572 it, I give links to the entire text of the OSHA regulations. With regard to the 4 bolt requirement, c2 is right; here are some more details. "Posts", which can have 2 anchor bolts, must be axially loaded or laterally restrained, as...
  11. Mattman

    Temporary wind loads

    There is now a national standard for Taro's original question: ASCE 37-02, "Design Loads on Structures During Construction." I would recommend picking it up. Although it is a slim volume (36 pages), it covers the topic of well. As for wind loads, it does allow a reduction. Similar...
  12. Mattman

    Galvanizing "Grades"

    US Steel has a good web page for galvanizing grade reference: http://www.usx.com/corp/sheet/coated/hotapp.htm A60 and A40 are ratings for galvannealed steel. This is a hot-dipped process where the steel is heated after coating with zinc, converting the zinc coating into a harder zinc-iron...
  13. Mattman

    f'c

    f'c is the specified compressive strength of the concrete.
  14. Mattman

    roof diaphram

    Whoa there, whyun. From franklewis3's posts here and in thread507-33808, it does not appear that the contractor feels there is a problem. He is not "knowingly omit(ting) something that he feels should be present." He is a contractor, not an engineer, and it sounds as if he does...
  15. Mattman

    roof diaphram

    There isn't much detail in your post, but if it is not in the plans the contractor shouldn't build it. He is not an engineer; he should not be determining what is required for the diaphragm. He does not have the knowledge. If you are the engineer and know what is needed for this particular...
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