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  1. gbuell

    Switched from ASD to LRFD for anchor design

    I work for a company that makes lots of standardized steel structures, and our design method is currently ASD. We have loads of calculation templates that use ASD for design. We have historically used post-installed epoxy anchors to attach our columns to concrete, but we are now running into a...
  2. gbuell

    Being Charged as a Subcontractor for Electronic Files

    Also, I don't think it really has anything to do with IP theft. They are also asking us to sign an NDA-type form for the files, which we're quite willing to do. And there is a specific stipulation in the spec that the fee does NOT cover future drawing revisions.
  3. gbuell

    Being Charged as a Subcontractor for Electronic Files

    We don't actually NEED the AutoCAD files, I can recreate the few details I need by looking at the PDFs we have, but of course that takes more drafting time. Probably less than $100 per sheet worth though. If we had to do a lot more integration, it would probably be worth it to pay for the files...
  4. gbuell

    Being Charged as a Subcontractor for Electronic Files

    My company designs and manufactures greenhouses, and we often end up subcontracting with architects or general contractors to design and provide a greenhouse that attaches to a larger building project. We've just gotten a new contract, and we asked for some CAD files from the architect in order...
  5. gbuell

    Base Plates/Anchorbolts

    The same table appears in AISC Steel Design Guide 1 for base plates and anchor rods, but there they are called "Recommended" hole sizes, not "Maximums".
  6. gbuell

    AISC Steel Design Guide 1 Errors and Question - Base Plates

    Thanks nutte!
  7. gbuell

    AISC Steel Design Guide 1 Errors and Question - Base Plates

    Whoops, I think I've answered my own question. Y only simplifies to Pr/qmax at the boundary between large and small moment base plates - any moment larger than that boundary results in an e value larger than ecrit, so the quadratic equation for Y should use e instead of ecrit. Duh!
  8. gbuell

    AISC Steel Design Guide 1 Errors and Question - Base Plates

    I'm working through the large moment base plate design procedure in AISC Steel Design Guide #1 2nd Edition for anchor bolts and base plates, and I'm having some issues. The example problem given for this procedure contains some calculation errors that render the results meaningless, and when I...
  9. gbuell

    Snow depth calculation in metric in ASCE 7-05

    Well, I suppose if you say "p.f or p.s", it could confuse people with sloped roofs, because they would have calculated values for both p.f and p.s and they wouldn't necessarily match. So to eliminate confusion, even if you just have a flat roof, the new sentence is telling you to go ahead and...
  10. gbuell

    Snow depth calculation in metric in ASCE 7-05

    Wait, why do you retract your last post? It makes sense to me that they should include both p.s and p.f in that sentence.
  11. gbuell

    Snow depth calculation in metric in ASCE 7-05

    I'm not surprised this has slipped through the cracks for so long, cause I really MIGHT be the first person to calculate snow loads in metric (using the ASCE 7 anyway)! I'll consider adding the thing about pf/ps, it is really strange that they removed pf from the 05.
  12. gbuell

    Snow depth calculation in metric in ASCE 7-05

    I don't think the black bar means that it's been addressed in an errata. My understanding is that the black bar means the section has been changed since the last code. In the ASCE 7-02, that sentence says "p.f (or p.s)", while in the ASCE 7-05, that sentence says "p.s". I think that is the...
  13. gbuell

    Snow depth calculation in metric in ASCE 7-05

    Well, I figured it out. The 102 factor should not be in the ASCE 7-05. I looked at the ASCE 7-95 to compare, and in the 95, they define gamma as kg/m^3 for SI. When you convert kg to kN, you have to multiply by 102 (which is (1000 kN/N)/9.8m/s^2). So the conversion factor is correct in the ASCE...
  14. gbuell

    Snow depth calculation in metric in ASCE 7-05

    In ASCE 7-05 Section 7.7.1, at the bottom, it says to determine the snow depth (h.b) by dividing the snow load (p.s) by the snow density (gamma). This is all fine and good, makes perfect sense. But then in parentheses there is this note: "In SI: also multiply by 102 to get the depth in m.) This...
  15. gbuell

    Faster way to drag "area" line?

    Thanks pstuckey. That's a good tip. I also realized that you can drag-select it and hold the down arrow key to move it down - it's slightly quicker than dragging it down, and easier to do for a long period of time.
  16. gbuell

    Faster way to drag "area" line?

    This might be hard to explain, but here goes: In Mathcad 14, Insert > Area gives you two lines that you can use to collapse areas of your Mathcad sheet. You can drag the two lines up and down to surround your equations as needed. However, you can't cut, copy or paste these lines. If you want to...
  17. gbuell

    Add the values in an array

    That's great, I didn't know about the vec function, that's exactly what I wanted.
  18. gbuell

    Add the values in an array

    I have a 2x9 array and I want to have Mathcad 14 sum up all the elements. I've gone through the different types of summations in Mathcad and I haven't gotten any of them to work. I did manage to get what I want by turning each column of the matrix into a vector using the column command (M<> in...

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