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  • Users: PE_JRM
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  1. PE_JRM

    20 psf minimum roof live load

    This a pretty basic question so please forgive me for asking but my area of expertise doesn't include buildings. I am renovating an old building that I own and I would like to check what the contractor proposes for the roof system and its effect on the rest of the structure against code...
  2. PE_JRM

    Thoughts on subgrade modulus determination needed

    I own a small cabin North of Atlanta, GA that is built on a 4" unreinforced slab. Structurally the slab details aren't good but it has survived almost 60 years with no cracking. There is no gravel below the slab and the slab doesn't have thickened edges to spread the edge load. The slab is...
  3. PE_JRM

    Question - Existing slab on grade analysis

    I am renovating an old cabin (DIY for myself) and having some trouble determining if the existing slab is adequate to support what I want to do. The existing slab was not well implimented. The existing slab is 4" thick, old enough (1965) to be only 3000 psi, probably unreinforced, no thickened...
  4. PE_JRM

    vaulted roof load path

    I am renovating a small very old cabin (for myself) and am spinning my wheels on the issue of wind loads. The place is 680 sf (34x20) and has a 3:12 roof slope. I would like to put a vaulted ceiling in the great room to enhance the feeling of it being spacious even though it isn't. I'm...
  5. PE_JRM

    help needed - reinforced slab overlay on an OLD unreinforced slab

    First, if anyone can tell me how to contact an admin. for this website I'd appreciate it. I mistakenly signed up as a civil/environmental but I'm actually a structural engineer since 1981. About 10 years into my career I went back to school and focused on aerospace structures. SOOOO, I havent...
  6. PE_JRM

    Upgrade old slab ideas needed

    I could use some help from people who design concrete structures every day. I am retired structural engineer and have had an interesting career that was widely varied in nature (marine, oil & gas, research, aerospace, nuclear) but I never did much concrete design work. The current problem I am...

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