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  1. jimmytwotimes

    Canadian firm doing work in the US

    I'm a Canadian citizen living in Canada. I've got no current ties to the US; the only exception being I am licensed in a few US states (in addition to an Ontario license). As I get more experience I see the appeal in trying to go out on my own. However, based on my experience, I don't think it...
  2. jimmytwotimes

    Buckling of a beam with tension side braced

    Does anyone have any recommendations/guidance for the buckling of a beam if the tension side of it is fully braced against buckling?
  3. jimmytwotimes

    Coating on embed plate

    Consider an embed plate with headed studs being installed into the face of a concrete floor slab on an office building. Additional steel components will be welded to it for facade supports so hot dip galvanizing the embed plate would cause trouble. In service the face of the embed plate does...
  4. jimmytwotimes

    Headed stud vs. deformed bar as an anchor

    Here is a related former thread that I couldn't extract a clear answer from: https://www.eng-tips.com/viewthread.cfm?qid=243978 Here's a link to illustrate my question: https://imgur.com/a/BrR3i6n On the left is a headed stud that we can say is governed by concrete tension breakout. On the...
  5. jimmytwotimes

    Shear Flow Thought Exercise

    Here is a graphic to frame my question: https://imgur.com/a/uhSYLph This is a cross-section showing two tubes being screwed together through their top flange. Let's say the inner tube (red) fits perfectly within the outer tube (black) on 3 sides, except at the bottom, where there is a small...
  6. jimmytwotimes

    Fasteners to connect aluminum parts

    Corrosion potential due to the use of dissimilar metals is a common concern in the cladding industry. There are lots of factors: interior vs. exterior exposure, anodized vs. painted aluminum, prime painted vs. galvanized steel vs. stainless steel, steel fasteners vs. stainless fasteners, etc...I...
  7. jimmytwotimes

    Building Drift and Glass Fallout/Facade Serviceability

    Curtain walls are required to withstand the lateral story drift of the building. The ultimate limit state is the glass in the curtain wall can not fall out. ASCE 7-10 13.5.9.1 requires Δfallout ≥ 1.25 * Ie * Dp Therefore, the curtain wall needs to accommodate 1.25, 1.56, and 1.875 times the...
  8. jimmytwotimes

    Steel Exposed to High Temperature for Short Term

    I am reviewing a 1/2" diameter steel flatbar hook. It is used to drop another material into an oven, and thus is exposed to 1500 degrees fahrenheit for a quick second. My question is if anyone can point me in the direction of some resources which will give me an indication of how this heat...

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