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  1. dauwerda

    PLS-CADD and Memory

    Perhaps if those things are deactivated or hidden the program isn't pulling them into RAM. They are still part of the file, just aren't being accessed.
  2. dauwerda

    How is power sold directly between generator and remote user across different utility entities?

    I feel like this video from "Practical Engineering" is very relevant to this discussion (or maybe this thread was started as research for this video :)): Which Power Plant Does My Electricity Come From?
  3. dauwerda

    50 foot clear span steel beam in residential construction

    My house has a W12x45 spanning 27ft supporting a second floor bedroom and bathroom - While I wouldn't call it an issue, I have definitely felt it vibrate, if it were the living room/kitchen I would say it would be an issue. The plans for my house showed either the w12x45 beam (which is what was...
  4. dauwerda

    50 foot clear span steel beam in residential construction

    Semi trailers are allowed to be up to 53ft, so in general, anything below 53ft can be transported without any special (overlength) permits. Obviously that does not account for local conditions that phamENG brought up. We regularly ship steel up to 60ft in length but our preference is to keep it...
  5. dauwerda

    Concrete Aggregates: Crushed vs Natural(Rounded)

    You would probably get more traction in the general structural engineering forum - A lot more people frequent that one. You could put a post there with a link to this one or delete this one and start a new post. I have always been under the impression that crushed aggregate was superior to...
  6. dauwerda

    Wood Framing Methods -Hardware connectors, nails, screws

    Standard practice around here is to frame on ground (including most of the sheathing) and then stand up. No extra squaring is done other than relying on the sheathing and lining up with other framed walls. Hardware would then be added after that.
  7. dauwerda

    Anchor bolt embedment close to edge

    Thanks jjl317, you are right, I totally missed the bottom edge callout in the picture. I believe it is large ignored because it won't have an effect, or at least not one that lowers the capacity of the anchor in tension or shear. A place it does have an effect is if your anchor is also expected...
  8. dauwerda

    Design of L or J shaped concrete anchor

    As far as I know there is no testing or literature for this type anchor. My gut tells me it would reduce the capacity of the anchor in tension as you would get high stresses resulting in local concrete crushing at the bend.
  9. dauwerda

    AISC structure, double nut on connections...

    sbisteel gave you the link to the specification - it is a free download. Without looking at the spec, I know that if the outer ply is sloped (like on a channel) a beveled washer is required. Also if there is a slotted hole, a washer is required. Finally if group 150 bolts are pretensioned and...
  10. dauwerda

    Anchor bolt embedment close to edge

    This is incorrect, ACI 318 goes into great detail on the edge effects and how to account for them.
  11. dauwerda

    Snow fence needed?

    1) As you know, snow guards are to prevent accumulated snow from sliding off the roof onto people as they enter or exit the building. I don't believe they are specifically required by code, but I know I would want them on my house...
  12. dauwerda

    How far to apply non-structural loads vs structural loads (ASCE 7-16)

    Take a look at the ASCE document, "Seismic Evaluation and Design of Petrochemical and Other Industrial Facilities" https://ascelibrary.org/doi/book/10.1061/9780784415481
  13. dauwerda

    Wind loading on external pipe rack

    Yes, pipe racks typically don't consider any type of uplift from wind load. There is an ASCE document, "Wind Loads for Petrochemical and Other Industrial Facilities" that goes through this type of structure loading. https://ascelibrary.org/doi/book/10.1061/9780784411803
  14. dauwerda

    Metal Buildings - Independent Analysis

    My first guess is that it would just make PEMB suppliers no-bid your project.
  15. dauwerda

    AISC structure, double nut on connections...

    I would like to see someone get a nut all the way to the head of an A325 bolt: Surely the question is actually about washers? If so, it would be acceptable to use two as described, though generally not required.
  16. dauwerda

    Fillet weld in compression

    It is definitely something that should be considered. That said, say it does yield in compression - what happens? More bearing area is engaged and stresses go down. Remember yielding (especially in small, localized areas) does not constitute failure. 1) Yes 2) Yes, unless you are specifying...
  17. dauwerda

    Lateral design of storage containers

    The IBC does provide some direction on these now: https://codes.iccsafe.org/content/IBC2024P1/chapter-31-special-construction#IBC2024P1_Ch31_Sec3114
  18. dauwerda

    Flowable fill or 911?

    Looks like the void is less than a foot high, I would have zero worries about pressure caused by flowable fill. I'm not sure if it's a concern or not, but I know underpinning is often finished off with drypack grout as just straight concrete will shrink while curing and not provide positive...
  19. dauwerda

    Taking the PE exam before experiance

    Yeah, I'm with canwesteng on this. The test was never an "experienced based exam" It's simply an exam of your knowledge. Frankly, the exam tends to cover way more information than most engineers use in their daily job (more breadth and less depth). As a practicing Structural Engineer for a...

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