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  1. jhnblgr

    Using a backpressure regulator to maintain a minimum pressure

    It just seems overly complicated for a simple problem. If you could explain the design requirements and reasoning maybe a real solution could be provided. Anytime anyone add things to a pump system like this is asking for issues, use the KISS system. I had a guy once had a prv then wanted to...
  2. jhnblgr

    Existing Slab w/ new basement retaining wall addition

    How do you plan on not undermining the garage slab? You will have live load surcharge on the wall backside potentially. Likely little to no real impact on design due to shallow height but figure the font axle to hood and verify the angle to the wall. Best idea is to rip the garage slab out and...
  3. jhnblgr

    Load Wind on a structure

    I would look at aashto, is has coefficients for flat faces for wind loads. Also ice loads if that applies.
  4. jhnblgr

    Evaluating the stability of a single I beam

    So in short you want fixed ends? Like an integral abutment? The shear studs them would need to go on an end plate similar to a column base plate, but I would imagine the forces to be quite large at the ends, this might prove challenging.
  5. jhnblgr

    Evaluating the stability of a single I beam

    You need to provide a sketch of what you are proposing. Shear studs should be used if you plan to use concrete to provide bracing however yet again this isn’t clear how this is being implemented.
  6. jhnblgr

    Sole proprietor as engineer or business man.

    Corporate veil in engineering isn’t as difficult as you might think, especially if you’re the only Professional.
  7. jhnblgr

    Projects in other Cities, states or provinces than your own

    Typically building departments send inspectors out to ensure compliance, unless the engineer is retained by the homeowner separately. Obviously countries differ on this I’m sure. Most home owners are too cheap to spring for paying an engineer to do site visits.
  8. jhnblgr

    Sole proprietor as engineer or business man.

    That and in some countries/states only Professional Engineers can be board members of the business. Also likely an ethics violation on top.
  9. jhnblgr

    Residential Addition Detailing

    while having done similar work to this concept, the existing truss connection and the span seems like this could be problematic and then throwing valleys into the mix. What’s the snow load like and what’s the footing size for the columns?
  10. jhnblgr

    Projects in other Cities, states or provinces than your own

    What is it you expect to see from a site visit prior to any excavation? Short of doing soil borings or test pits walking the site would not yield much information beyond blatant fill material or swampy ground. Best off looking at historical aerial images and wetland or soil maps to see what you...
  11. jhnblgr

    Flange plate moment connection

    Check design guide 39 AISC I think that would really depend on the weld type
  12. jhnblgr

    Moisture content of subgrade/subbase for next layer

    I wouldn’t call it pavement, it’s subgrade, unless the soil is over saturated what would be the purpose of drying it out? Settlement concern would mean you failed to reach compaction prior. The frost heave concern would be a result of using incorrect material for the area, non frost susceptible...
  13. jhnblgr

    Load Wind on a structure

    AASHTO Structural Supports for Highway Signs, Luminaires and Traffic Signals Or ASCE 7 maybe
  14. jhnblgr

    Using a backpressure regulator to maintain a minimum pressure

    What is the purpose of this? Why not just let gravity do the work? If you need variable flow rates use a vfd. So far this sounds like a really bad idea and not fully developed or understood
  15. jhnblgr

    QA/QC Process Structural Engineering Firm

    Typically my review consists of verifying calculations are correct, references provided and confirm the assumptions are correct and codes correctly applied. Plan review consists of review for constructability, match the calculations and sufficient details provided QC isn’t the issue, it’s a...
  16. jhnblgr

    Elevated Floor Slab and Moisture Infiltration Concern

    Shouldn’t a good sealer or epoxy floor coating provide protection?
  17. jhnblgr

    Joining footing and slab

    I’d be more worried about the pretty drawings you bought than that footing. Do you have a frost depth or is that not a concern. Really should have a competent person review your building prior to building. It’s cheaper to do it right once that do a bunch of repairs. Just because building codes...
  18. jhnblgr

    Joining footing and slab

    Did you have actual plans?
  19. jhnblgr

    Sawcut control joints in formed concrete?

    How long is the wall, how thick is and how reinforced is it? And most importantly how cheap is the home owner.
  20. jhnblgr

    Dispersion Line for Padstone

    I would limit it to the inside face of the block, the distribution would still likely be 45 but as you say it’s are is limited due to the depth. But I don’t agree with the load distribution for the lintel since the block thickness isn’t great enough and the load isn’t centered. A high likelihood...

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