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  1. CodeQuandary

    heating an aluminum can

    I'm curious, but ill-equipped to analyze: if I have an aluminium can, let's say 12 oz volume. I fill it with water and nitrogen, to create a 2 Atm internal pressure so it is structurally robust (i.e. can be stacked). My understanding is that the can is capable of withstanding 6 Atm of pressure...
  2. CodeQuandary

    Batting linestyle problem

    I'm brand new to Draftstyle (first day: pretty impressed), and am just using it for some very simple arch details right now. I want to use the Batting linestyle to add insulation to my details. It works reasonably well in model space, but fails on Sheets: vs. The problem is one of scale...
  3. CodeQuandary

    Minor loads on substandard buildings: residential solar

    I'm hoping to get some opinions. Very short summary: Assume existing, older, small, flat residential roofs with framing that don't meet modern code by a significant margin. Should it be generally allowable to add solar to them (on the order of 4 psf) without engineering (which, as explained...
  4. CodeQuandary

    Brick wall uplift connection

    I have to look over engineering analyses of uplift of beams attached to the top of a brick wall. The wall is 12" wide multiwythe unreinforced solid brick, the uplift force is typically between about 300 and 1000#. I'm not an engineer but my physics background helps me follow the reasoning and...

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