Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations waross on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. codySTR

    NDS Toenail Conx. Subject To Lateral and Withdrawal Loads

    pham: Right. To clarify, I was not thinking I'd need to find the angle of the toe-nail itself, but rather the angle of the resultant relative to _____. Is (blank) the vertical stud axis parallel to the uplift force, the horizontal sill plate axis parallel to the applied lateral load, or ...
  2. codySTR

    NDS Toenail Conx. Subject To Lateral and Withdrawal Loads

    I've dug myself into a deep hole of confusion on a topic that is probably very routine and simple: How do you apply the NDS equations to check a toenail connection subject to both withdrawal loading and lateral loading? Instead of a sketch of this situation, refer to to the 3D image in figure 1...
  3. codySTR

    OK to Ignore Portion of Diaphragm?

    Good point there, KookK. Agreed about the lack of instruction in school on load path and connections (of any material, in my opinion). I missed my chance to take a wood design course as an undergrad when it was actually offered. Sadly, wood wasn't even offered by the time I was in grad school...
  4. codySTR

    OK to Ignore Portion of Diaphragm?

    Koot, here is a 3D view focused on the curved portion. The elevation view is pretty wacky to look at. The highlighted area is the first level of wood framing above a PT concrete podium. There are 3 additional levels above this (2 floors + roof) all with matching layouts.
  5. codySTR

    OK to Ignore Portion of Diaphragm?

    Thank you all for your input thus far! I do tend to get bogged down by trying to figure things out the "PhD" way. Bad habit. I should point out that there is not an exterior wall actually along the curved corridor. In the image below, the yellow highlighted portion is all open-air corridor...
  6. codySTR

    OK to Ignore Portion of Diaphragm?

    Pham and BA: Both of your suggestions seem reasonable to me. I suppose I'm leaning towards what you're thinking, BA. That is ignore the complex stuff, satisfy equilibrium with the lesser number of diaphragms/collectors, and get conservative shears in the elements I am accounting for. And like...
  7. codySTR

    OK to Ignore Portion of Diaphragm?

    I am determining the lateral force distribution through a wood-framed apartment building. Hardly any of the shear walls align across the central corridor. Also, there is a geometric irregularity that I haven't seen discussed anywhere: the corridor curves. So, my main question is really: Is it...
  8. codySTR

    NDS Group Action Factor - 1 Row of Bolts Perp To Grain

    NDS2015 Steel-to-wood bolted connection Background/problem description: I'm calculating the capacity of a connection for a steel beam framing into the side of a glulam beam. It is a simple connection with an angle bolted to the end of the steel beam using (3) 3/4" diameter bolts and the...
  9. codySTR

    Pullout Capacity - Steel Handrail Embedded in Concrete

    Ah, I follow you, JLNJ. In this particular application, it'll be OK by inspection. The pipe CL is 6" from the closest edge of concrete with 8" embedment. There will also be a #5 longitudinal bar enclosed by #4 stirrups to resist breakout. I don't think concrete pullout will happen before the...
  10. codySTR

    Pullout Capacity - Steel Handrail Embedded in Concrete

    Ron, thanks. Do you have a source for that? Also, as an update (especially to my response to JLNJ): I checked M/S when I should have checked M/Z. TLDR: the pipe is OK in bending.
  11. codySTR

    Pullout Capacity - Steel Handrail Embedded in Concrete

    dhengr, interesting suggestion! If I could change the design, I'd slap a cap plate on the end and weld a headed stud to the cap plate. Embed that in grout. Either that or weld an oversized plate to the end of the pipe (like a cap plate) to achieve some bearing if someone tries to pull up on the...
  12. codySTR

    Pullout Capacity - Steel Handrail Embedded in Concrete

    Retired13, that was my initial idea... the problem is that this detail has already been implemented on the project. Pullout is only a concern in the sense that I don't want some jack-knob to decide he/she wants to "test the pullout strength" because it seems fun and incidentally yanks the post...
  13. codySTR

    Pullout Capacity - Steel Handrail Embedded in Concrete

    Exhibit A: A 1.5" I.D. steel pipe is used as a handrail and as the vertical posts connected to the handrail). Per the Landscape Architect's detail, said handrail posts are to be embedded X inches into my reinforced concrete stair slab / beam. The concrete base will be core drilled, the steel...
  14. codySTR

    Woodworks Shearwall - Floor Openings

    Does anyone know how to model a floor opening in Woodworks Shearwall? My office recently purchased the design suite from Woodworks. The suite includes "Shearwall", a program used to analyze and design wood shear walls. I have watched tutorials and tinkered with some models, but so far I've been...
  15. codySTR

    AISC DG-02 Applicability to HSS Beams

    Can AISC design guide 02 be used to design and check web openings in a HSS member? I just finished using AISC DG 02 to evaluate a WF beam that is needing to be hole-punched through its web to allow a roof drain to pass through. As similar condition exists at an adjacent beam, but the adjacent...
  16. codySTR

    Wood Stud Capacity - Weak Axis Lateral Support

    To anyone still following this thread: Something that occurred to me that may be an important consideration in stud-wall design is construction sequence. Originally, I thought: "Oh, man! NDS2015 A.11.3 says I can get way more capacity out of this wall if I assume the strong axis buckling...
  17. codySTR

    Wood Stud Capacity - Weak Axis Lateral Support

    Darn. Thanks for pointing that CF factor out. I set up my calcs using SYP (CF doesn't apply for the sizes I'm considering) and forgot to add in the CF input. Now that you mention the 5 psf pressure, I'm more in favor of keeping that as a minimum. Maybe a little text reminder can be added to...
  18. codySTR

    Wood Stud Capacity - Weak Axis Lateral Support

    Celt: I finally got it up and running. Thanks for your help! TME's post made me realize that I needed to create a Github account first before I could see/use the download button he pointed out. First thoughts about your program: 1) Wow. Good job. I wish I could make such a robust tool. 2) I...
  19. codySTR

    Wood Stud Capacity - Weak Axis Lateral Support

    Celt and TME: Thanks for your responses! I'm hoping I can learn a lot more about this python stuff in the future; I really enjoyed some short spurts of programming for school-related projects and some extra-curriculars. For now, I'd really like to simply open the program and poke around a...
  20. codySTR

    Wood Stud Capacity - Weak Axis Lateral Support

    Celt82 (or anyone who can help): Do you have a link to help me understand how to "open" your program? Or could you roughly explain how I can go about that? I've downloaded pythonxy, but I have almost no idea how to get from the little python(x,y) home window (the tiny window/box with tabs...

Part and Inventory Search