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Recent content by jhnblgr

  1. jhnblgr

    Tube to Tube Moment

    Look at cantilever sign structures for guidance, the loads would be similar in nature. What they found is fatigue typically controls connections so keeping stress low is key. AASHTO code overhead signs and luminaries
  2. jhnblgr

    Client requesting full Professional Liability Policy

    Typically unless you are working from a government agency then people requesting it got their money from suing people even if you do nothing wrong. I had a client request all sorts of insurance, their accountant was the one making the request. In the end they requested that I provide insurance...
  3. jhnblgr

    Another wood knee braced frame thread

    Lateral loads and stability
  4. jhnblgr

    Modeling question in etabs, What does a ribbed shell means?

    https://civiltoday.com/structural-engineering/227-ribbed-waffle-slabs
  5. jhnblgr

    Another wood knee braced frame thread

    How realistic is the base pin connection? Wouldn’t it more realistically need to be able to be fixed?
  6. jhnblgr

    Roof without flat ceiling - how to resist thrust?

    How much deflection occurs in the weak axis from the truss thrust?
  7. jhnblgr

    Contractor Stealing My Plans

    Unlike other fields civil engineering and architecture is site specific design and as such each new site needs to be evaluated to ensure the design is adequate. Also the owner does not retain a civil engineer for the mass production so the owner only has permission to use the drawings for a...
  8. jhnblgr

    Is the IDEA Statica Connection Library actually free?

    very poorly run company from my experience. They have a great product but lack customer service and good guidance on how to use their software for non standard designs.
  9. jhnblgr

    Help need for weight ditribution assessment

    Cut out floor and follow the manufacturer recommendations. If you can’t do it right don’t do it at all.
  10. jhnblgr

    Roof without flat ceiling - how to resist thrust?

    I would recommend looking at the window and door headers to check for deflection laterally. If the truss is stiff enough there should be limited thrust. Most of my clients refuse to use truss roof systems.
  11. jhnblgr

    Roof without flat ceiling - how to resist thrust?

    Run a ridge beam with two cross beams like a king post. Make the structure something people look at instead hiding it.
  12. jhnblgr

    Need help in design of purified water generation system

    What’s the water for? What is the reason for treatment? What’s the demand and required pressure? What’s the treatment capacity? What contaminants exist? Are there any health departments involved?
  13. jhnblgr

    Contractor Stealing My Plans

    Talking about liability and IP is two different items. A AE is liable for all the work bearing their seal. The AE industry, and architects or engineer can only be held accountable for design errors or omissions, the contractor or owner can only be accountable for construction defects or...
  14. jhnblgr

    Contractor Stealing My Plans

    This is a civil engineering case and not mechanical which has entirely different legal protections. And operating under industry exemption is typically not allowed.
  15. jhnblgr

    Reinforced Steel Yield Stress

    Look at fatigue area in AASHTO for signs and luminaries. NYS DOT has standard details for hand holes in their BD sheets.

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