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  • Users: YC611
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  1. YC611

    ASCE 7-16 Figure 30.4-1 Shaded C&C Wind Pressures

    It couldn't be since I believe all ASCE 7-16 wind load are in strength level. So if he's pulling the values from the tables, he needs to convert them back to ASD, for which he did not. And if the final values are converted to ASD, those values will still be less than the 10 psf required for...
  2. YC611

    ASCE 7-16 Figure 30.4-1 Shaded C&C Wind Pressures

    I appreciate your help here! Perhaps others will be able to clarify it for me. I just cannot wrap my head around if they were mistakes, given that so many people praise this book. And why ASCE 7-16 doesn't shade the negative pressures in the table!
  3. YC611

    ASCE 7-16 Figure 30.4-1 Shaded C&C Wind Pressures

    This is what I read as well. As the note mentioned, final values shall not be less than the 16 psf. And that the negative values were not shaded at all. For this, he actually got it from interpolating between the values in Figure 28.5-1. With hmean = 15.5 ft. I am not required to design in...
  4. YC611

    ASCE 7-16 Figure 30.4-1 Shaded C&C Wind Pressures

    Hi all, I have recently picked up a copy of "Design of Wood Structures" by Breyer, and I saw something in the Example 2.10 that does not look right to me. The final inward pressures for some zones are less than 16 psf (which should be the minimum C&C wind pressure). So, I checked the ASCE...
  5. YC611

    SE Practice Exam Vertical Forces Breadth #26

    I agree and I believe most still stick with ASD for masonry. Below is the screenshot of the strength illustration from the PE handbook.
  6. YC611

    SE Practice Exam Vertical Forces Breadth #26

    The PE handbook has a section that gives those formulas.
  7. YC611

    Cold-formed steel column platform framing detail

    That’s very fair. Though I probably won’t see this kind of load in my projects. Most of the lowest floor stud in my project is at 6-7 kips and built-up post by stair at 15-16 kips.
  8. YC611

    Cold-formed steel column platform framing detail

    For #1, the top of columns and top track should already be connected by screws on front and back sides as shown on your sketch. The 1 angle I showed was to connect beam to column. For #2, I agree with you, I will reconsider this on my design, but for most of my projects, I do not see a that big...
  9. YC611

    Cold-formed steel column platform framing detail

    My pleasure to give back to this community. I see a total of 8 angles by the side of the boxed beam that are trying to secure the beam at its location with column and concrete slab on metal decking. Is there a reason why you do that? To create some kind of fixed connection?
  10. YC611

    Cold-formed steel column platform framing detail

    See below the details I typically use. The angle thickness and # of screws changes depending on the actual loading.
  11. YC611

    Steel Beam Supported by Load-Bearing CFS Wall

    Thanks all for the great input! This is very me! Especially this is a residential project and I want things to be in their place.
  12. YC611

    Steel Beam Supported by Load-Bearing CFS Wall

    Dik, I was more curious about the choice of top track above triple stud.
  13. YC611

    Steel Beam Supported by Load-Bearing CFS Wall

    This is a 4-story building with a penthouse, I have to limit the unbraced length of the column at its weak axis. Thanks! This is close to what I imagined. Any reason you use welds at the bottom flange with a track instead of bolts with a plate? Money?
  14. YC611

    Steel Beam Supported by Load-Bearing CFS Wall

    XR250, The beam is connected to the column at one end, and the other end is sitting on top of the load-bearing cfs wall. Please see the sketch below. I was also wondering if I could get away with replacing this beam with a double c box girder and consider the column restrained at that level.
  15. YC611

    Steel Beam Supported by Load-Bearing CFS Wall

    driftLimiter, I have been avoiding the steel to cfs wall connection until now. But the client is pretty adamant about keeping them all cfs studs. Thanks for the reference. I will try to convince him again and see how that goes.
  16. YC611

    Steel Beam Supported by Load-Bearing CFS Wall

    Hi all, Does anyone have connection details of the I-beam supported by the load-bearing CFS wall? The end reaction is very minimal in this case. My initial thought is to have a built-up post using 3 or 4 studs, a top plate over the post and welded to the post, I beam on top of the top plate...
  17. YC611

    Foundation Frost Line

    If the diesel generator is not moving due to some vertical movement, I would say you are fine without going down the frost line. Or you could provide the rigid insulation in accordance with ASCE 32. Check out the IBC Section 1809.5.
  18. YC611

    Edge Beam Support Condition

    Kootk, thanks for the sketch, and I agree with you. I thought about that when I asked about the support conditions. This is a residential building in NYC, a typical 20' width building. Currently, the main load is the CMU wall itself and the window dead weights. The beam size is at W12x30 now...
  19. YC611

    Edge Beam Support Condition

    Hi Kootk, unfortunately, the contractor is up to the 3rd floor now and the client wants this to happen so they could have a huge corner window like the one below. I was just informed of this yesterday, so I have to come up with a solution to control the damages. I have told the contractor to...
  20. YC611

    Edge Beam Support Condition

    I am happy to include the missing information. The 7'-0" wall is one of the shear wall which will deal with the in-plane loads itself with rebar. Rebar will run through the beam flanges to reach the development length. The cantilever beam is only at the and 4th floor, the lower floor has longer...

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