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  • Users: mmarlow
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  1. mmarlow

    Beam on Elastic Foundation

    Hello, I have a project where a customer wishes to tear down and existing boat house and build a new one on its foundation. With limited information we are assuming that the concrete foundations have the same width at the bottom as they do the top (2'-0") and that it is reinforced. We know the...
  2. mmarlow

    Construction Guardrail

    Hello, I'm sure someone has posted about this before, but I'm having trouble finding it. I'm designing a temporary construction platform out of wood. The contractor is proposing 2X4 posts at 4' O/C (in the weak direction). I've seen this on construction sites before, but am unable to get this...
  3. mmarlow

    Reinforcing Existing Joist Girder web members with intermediate connectors

    Hello, Im in the process of analyzing an existing Joist Girder for the loads of new RTU's. The Web members are double angles and are 20-30% over stressed. Which does seem strange because the chord members appear adequate. These web members have no intermediate connectors. Is it reasonable to...
  4. mmarlow

    Modifying Existing Roof Beam

    Our Customer has an existing roof beam in their garage that they would like to modify to allow a larger piece of excavating machinery into the Garage. I have attached a sketch of the existing beam, and the area that they would like to remove (6" x 14'-0). I've done some field work and found the...
  5. mmarlow

    Damaged W-Beam Flange

    Excuse the poor title, I wasn't sure how to phrase it.. Im doing some work at a local college where facility workers noticed concrete haunches were cracking and spauling. Assuming that rusting steel on the inside of the haunch was causing this, I asked them to remove some of the hunch to expose...
  6. mmarlow

    Concrete Compression test results

    I am an EIT and the firm I work for is having issues with a job they had done 4 years ago. We designed an elevated slab for a paper mill using a high early mix because they had to shut down their process to do the pour, and they could only afford to be shut down for for a couple of weeks. This...

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