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  • Users: EngDM
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  1. EngDM

    Digital Seal and Signature

    Can I hold a free seminar explaining by Manitoba does not require Seismic design and have them adopt this? I should try this... maybe I will buy everyone Applebees. I agree that this is probably what happened, as our AHJ even recommended a program to use...
  2. EngDM

    Digital Seal and Signature

    Could you flatten your stamp into the page after applying digital signature and certification?
  3. EngDM

    Drifting Snow from Multi-level roofs

    Thank you for the detailed response. I've got a few followup questions regarding some of your points: 1. For the N/S direction where you have two identical buildings, is there a way to capture the fact that there are indeed these two source areas? I am wondering if just using the plan direction...
  4. EngDM

    Drifting Snow from Multi-level roofs

    I'll look into ASCE 7, but I don't think we have something similar. As far as snow being shoveled, would you take the sum of the snow from balcony 1, and attribute it to balcony 2 but only in the area not covered in overlap? Like if balcony 1 has a 100psf drift, calculate the total lbs of that...
  5. EngDM

    Drifting Snow from Multi-level roofs

    Hey all, I'm curious what the typical approach would be for calculating snow loads where you have multiple different levels of source areas, some of which already have drifts. The situation I've got is a building with balconies/terraces at every floor, but the balconies increase in overhang as...
  6. EngDM

    NBCC 2020 SLS Load Combinations

    Thanks, that's what I figured.
  7. EngDM

    NBCC 2020 SLS Load Combinations

    ...It just seems really odd for me to go from 2010 code which had no SLS combinations, to 2020 code where wind as a companion load is taken as 0.75*0.3 = 0.225, or 22.5% of the applied wind load for serviceability cases. Again, I'm 99% postive that you do, just the NBCC document doesn't have a...
  8. EngDM

    Cantilever Plate bending with UDL

    If the UDL is perpendicular to the fixed edge, and the plate is much longer than the UDL extending away from support, I don't see why you'd use a unit width. If the UDL was running parallel to the fixed edge, then the bending would be uniform about the support, but in the case illustrated by...
  9. EngDM

    Slab on grade on High Density Foam

    The document linked earlier in the thread shows the psi values being for 5% deflection, so you're right.
  10. EngDM

    T-Bracket Beam Analysis

    You bet
  11. EngDM

    Slab on grade on High Density Foam

    Thanks for the references. Since the foam is relatively uniform, would it be accurate to say that the subgrade modulus is of little effect and it's more of just a bearing check?
  12. EngDM

    Concrete exposed to both chlorides and sulphates

    Interesting, and I guess it makes sense since they are different adatives.
  13. EngDM

    Slab on grade on High Density Foam

    Hey all, I am needing to check an existing slab for a new mezzanine line load, but the slab is on a HD40 (psi) foam insulation and I'm not sure what to take as the subgrade reaction modulus since that is in pcf. My thought is that I'd need to check the HD40 to support the load, and then check...
  14. EngDM

    Concrete exposed to both chlorides and sulphates

    Are you saying that you'd write it out as C-1/S-2 in your concrete notes? I've never seen drawings with a dual-type called up like that; I've always just picked the one with more severe constraints.
  15. EngDM

    Do you guys defer steel connections? Should it be on the contact?

    We don't generate models as EOR, aside from 2D CAD files. The only models I get are from our steel fabricator clients when they retain us to do calculations; they model it in Tekla and give me the .ifc.
  16. EngDM

    Beam Reinforcement Calculation

    If the beam is being loaded by UDL applied to the top flange, doesn't the weld from top and bottom of the reinforcing plates need to be sized for Q, similar to how you'd do it if you were reinforcing with a T as BA drew? Otherwise how does the side plate go along for the ride if it's not...
  17. EngDM

    HSS to HSS connection

    Even if you reduce the branch member as you've described, there are still limits to length of weld on the branch member face such that you cannot rely on the entire branch face that is perpendicular to chord span direction. See table K5.1 of AISC 15th ed manual. Could also check out Table K4.2...
  18. EngDM

    Beam Reinforcement Calculation

    Perhaps a calculated example (not software) would clarify the difference between though processses here.
  19. EngDM

    Beam Reinforcement Calculation

    This is how I've always understood it as well. You're only using the area past where you are trying to find the q value for.
  20. EngDM

    Max Shims under Steel Beam Bearing Plate

    Could the contractor not just keep the beam down at plate elevation, and add nailers to the top of the beam instead of shimming the underside?

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