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Recent content by STpipe

  1. STpipe

    Equivalent "Responsible Charge" requirements in Canada?

    Ontario seems to have something similar. The guide by PEO "Assuming Responsibility and Supervising Engineering Work Guideline" states: "[...]there may be situations where engineers are required to assume responsibility for work that has been prepared by others outside of the province. These...
  2. STpipe

    Weld Sizing - Blodgett vs. FEA

    Why not just extract the total weld force along a weld line from the FEA and use that to design the weld if the geometry is so complicated that you can't do it by hand? If you really desperate to actually do a stress analysis, then in the same vein of human909's suggestion, look at how...
  3. STpipe

    SAP2000 Modeling Question

    For something like this, I would just model it as two elements not connected to each other and overwrite the unbraced length for the design checks.
  4. STpipe

    Digitally sign Structural drawing

    I've also had colleagues have issues in FL for not having the proper digital signature with 3rd party verification.
  5. STpipe

    Digitally sign Structural drawing

    At least for us, which requires 3rd party software verification, the process is to put an image of the stamp and signature with automatic date stamp, and then digitally sign the document. The digital signature isn't a visual thing, it's an embedded code (not sure if this is the right word) into...
  6. STpipe

    Engineering Design 'Stack'

    Yes, if you purchase the requisite addon. I wouldn't call it more fleshed out, the programs are virtually identical save for one having the capabilities to model shell and solid elements.
  7. STpipe

    Engineering Design 'Stack'

    That's unfortunate. So basically those that own perpetual licenses will have to switch to the subscription to get access to the newer versions with code updates etc.?
  8. STpipe

    Engineering Design 'Stack'

    RSTAB is the exact same as RFEM, just without the shell elements, so if someone likes RFEM, they should like RSTAB as well. I'm personally a big fan of the programs and wish I had access to them. The initial price is attractive, however once you get to all the addons for design and other...
  9. STpipe

    Ontario Building Code, steel beam tables vs engineered calculation discrepency

    If you think that's bad, wait until you start considering continuous beams (a very common occurrence in residential/Part 9 construction) compared to the Part 4 calculations.
  10. STpipe

    Malone's Irregular Diaphragms

    Funny enough Bones, I tried the same thing last week. I didn't get a chance to delve too deeply into the 'why' with the lack of correlation, but what I found in the example I looked at was the model exhibited the general behaviour and mimicked the distribution of forces, however the magnitudes...
  11. STpipe

    SAP2000 Nonlinear Analysis Setup for Steel Design: Notial loads

    Definitely need to include the notional loads. The non-linear analysis (along with stiffness reduction) is what allows you to use K = 1 for the design of members, but you still need to account for destabilizing loads. With SAP2000, there should be an option to automatically generate the...
  12. STpipe

    Diaphragm Analysis with overhangs

    Conceptually, a diaphragm is just a deep beam. So assuming you have a lateral load in the N-S direction, then the diaphragm is just a beam with two simple supports with a slight overhand beyond each support. You'll end up with load reversal for your chord axial forces since you'll have both...
  13. STpipe

    All window first floor in part 9 of NBC

    I mean, that's not necessarily a bad thing...
  14. STpipe

    Are Unbalanced Snow Loads required for Single Family Residential Homes in the USA

    Check the commentary for guidance perhaps? I'm not familiar with the IRC, but the Canadian equivalent (Part 9 of the building code), you only need to consider the simplified snow load applied as a balanced snow load on the entire roof. There is a provision that states that in situations where...
  15. STpipe

    What lateral loading do I apply to a playground structure in an existing building (Space Frame)?

    This would fall under the category of an amusement structure under ASCE 7. So for seismic R = 2.5, Omega = 2.5, Cd = 2.5. I think as dik pointed out, 100 psf for your live load, and then use the appropriate fraction of that to add to your effective seismic weight as per the code. The problem...
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