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  1. AdamJSR

    Support Types in Truss Model - Engissol

    Just wondering what support types you guys use when modeling roof trusses? I've been using fixed/roller when solving by hand, but is there a more realistic, or accepted method when using software to model? Thanks so much for the help.
  2. AdamJSR

    Truss analysis loads to consider concurrent

    Service Limit States.. Will do.
  3. AdamJSR

    Truss analysis loads to consider concurrent

    So, when a truss designer goes out to design a truss he will also take the load combo's, or would that be the job of the engineer/architect specifying the truss? For instance, if I tell them that we are in a 60psf GSL area, would they reduce that snow load for the pitch of the roof? Would I...
  4. AdamJSR

    Truss analysis loads to consider concurrent

    Thank you for the input.
  5. AdamJSR

    Ideas to Get additional capacity out of Fink Truss

    YEs, hanging from the top chord, but not even tied to every truss member, about every other or every three. There is also four laterals running on each side that is fairly rigid and only supported from the mail trunk and at the drywall ceiling as it enters the ceiling below.
  6. AdamJSR

    Ideas to Get additional capacity out of Fink Truss

    Bending. Buckling seems to be ok.
  7. AdamJSR

    Truss analysis loads to consider concurrent

    Quite sure I know what I am doing. I am a bit new to trusses, but I am trying to learn. I am a PE, but work under another PE with a great deal of experience. IT is always more beneficial to learn on my own, as opposed to just being told how to do it. So I go and run some numbers, think of...
  8. AdamJSR

    Truss analysis loads to consider concurrent

    Another quick Question.... When I plug-in my loads in the load combinations provided in ASCE-07 I am a bit unsure of how to apply. For instance, 2.4 Load combination number 1 = D + F. Since I am trying to analyze a truss that has top chord DL, and a bottom chord DL, would I just sum the DL's...
  9. AdamJSR

    Truss analysis loads to consider concurrent

    Ok. That's what I thought. I just seemed to think that it was different for the analysis of existing members, as opposed to design of new members. I am basically using the load combination in the ASCE-7 and analyzing from there. Thanks
  10. AdamJSR

    Ideas to Get additional capacity out of Fink Truss

    Charlie... I am actually calculating the actual snow load (based upon ground snow load in our area, and then reducing it for pitch), adding in the DL of sheathing, etc, adding the DL from the HVAC installation and then determining web stresses. Both the bottom chord and top chord are...
  11. AdamJSR

    Engissol Analyze Attic Truss (frame)

    Thanks for the input. Will it actually solve for member forces in indeterminate frames/trusses as well as simple determinate trusses? Thanks again
  12. AdamJSR

    Septic Design Build?

    In NY it is a "Design Professional", and that is typically an engineer. Most muni's require and interpret that to mean engineer here. I am more concerned with any conflicts that might inherent in a design build scenario where I design, and manage the construction activities by hiring...
  13. AdamJSR

    Truss analysis loads to consider concurrent

    Let me explain a bit better. If I want to analyze an existing truss for a rooftop installation I find the snow load, wind load, and dead loads. Then I find member loads and stresses, compare them with the lumber type used in each member. Would I take the governing loads (typically the snow...
  14. AdamJSR

    Truss analysis loads to consider concurrent

    Well. That's why I was asking. I know in design that they are considered with factors, but for analysis I thought I read differently.
  15. AdamJSR

    Truss analysis loads to consider concurrent

    Writing this from phone. Please excuse mistakes.... When analyzing a truss what loads are considered concurrently? I thought that I had read for analysis of roof loads we don't have to consider them concurrent, but I can't find hard reference in any codes (or I'm just not looking in right...
  16. AdamJSR

    Engissol Analyze Attic Truss (frame)

    Any of you out there use the Engissol 2D Frame Truss analysis software package? Seems reasonably priced for the 2D package. Was thinking about using it for some truss analysis. More specifically I was looking to use iot for the Attic Trusses, and other truss configurations that are a bit more...
  17. AdamJSR

    Truss Plate Stress vs Member stress

    Do you more experienced members have any tricks on how to determine who manufactured trusses you might be trying to analyze? Most I see barely have grade stamps on them.
  18. AdamJSR

    Septic Design Build?

    Do any of you ever perform Design & Build Septic systems? I have the opportunity to partner with a small construction company to start expanding some septic design builds. Just wondering if any of you have self performed the construction and design in the past? Thanks
  19. AdamJSR

    Ideas to Get additional capacity out of Fink Truss

    Sorry. Supported, yes. Long day yesterday!
  20. AdamJSR

    Truss Plate Stress vs Member stress

    Just got done analyzing a metal plate connected truss. By the grade of lumber used (S-P-F 1650f 1.5E) the member combined stresses are very low (around .3-.4) with my assumed loads (around 60psf total). I don't have a good way to analyze the metal plates. Ideas? I can't imagine they would...

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