The torsional capability of the W21 isn't as much of my concern if only because technically the specified beam is capable of withstanding the torsion, and the joist hanger does have an uplift capacity that would be more than sufficient, but I can understand looking at that its not so much the...
Not a problem at all, here's a better section view of what I was expecting, the loads were provided in the figure in the original post's screenshot:
The idea would be the all-around web on the outrigger would apply the moment directly to the steel beam, then as the beam begins to rotate as a...
Very similar here with corner framing decks and a lot of glass, not to mention a full height basement close to the groundwater table and low soil quality; certainly challenging in multiple aspects so far. Less so an architectural "this is too much" as much as an ambitious homeowner with a lot...
In my own brain storming the rest of the day I was coming to something not too far off from this, effectively just making it one rather large & complicated cross section to act as a single member on its own. I will say the client has been more than open to introducing most steel in the effort of...
So in my mental image of this situation, the steel outriggers would have a fully rigid & welded connection to my steel beam, while my framing joists were going to be put on top-mounted joist hangers with an uplift capacity that are welded to the top flange of the steel beam. If I were to use...
For lack of better word not without it being impractical; plus as the W section gets heavier the increase in material thicknesses only saves maybe an inch and a half for a massive difference in weight/material cost
I did bring up that this would be the ideal scenario, but they don't want to...
Looking for some thoughts on solving a free body diagram after adding in a few variables. For context, this is a home with a cantilevering deck at the second floor that is then being placed over a full glass wall (minus some small 8" wall cavities for HSS columns for a moment frame), with a deck...
My apologies, I didn't even realize I posted in the wrong forum; chalk it up to the new forum layout I suppose
Though yes FBD was short for free body diagram
I posted this in the wrong forum, though I'm unsure how to fully remove it from the website; I've reposted it here:
https://www.eng-tips.com/threads/worries-about-torsion-framing-of-a-cantilever-deck.524107/
Apologies for the mistake.
DW, the plan was for the framing to be dropped to be aligned with the concrete foundation wall (i.e. top of joist matches the top of wall), so that should be in line with what you were saying yourself. I think more what I was thinking of/fearful of is the idea that TJI's are not meant to be...
Looking for a second opinion on something - I have a basement wall that's retaining 12ft of soil for a basement, with the first floor being an 11 7/8" TJI floor system and the basement slab being present at 11.5ft below grade. Now, whenever I specify TJI joists, I don't consider them being...
Hello all, looking for some thoughts regarding applied soil weight & pressures in a retaining wall design.
I began designing reinforced concrete retaining walls from "Design of Reinforced Concrete" by Jack McCormac, which I was recommended by a peer of mine, and I've been following a similar...
Looking for some guidance as someone who is in unfamiliar territory; I have a situation where a client is looking to install a tiered retaining wall in their residence backyard to replace a currently failing wall. They're looking to use a tiered wall design, and rather than poured concrete are...
driftLimiter,
Yes a drag strut is exactly what I was looking for in this case; I had a feeling there was some fundamental solution to my problem and that I was just missing the piece. That ensures the lateral load essentially treats that portion of the building as a shear plane. My thanks to...
Pham & driftLimiter,
Thank you for your responses; the thought of using a nailer certainly simplified my approach when it came to my load path and connection analysis; certainly an easier way to go.
I come to you with a different question for the same building, one that I'm sure is just me...
Pham,
See attached sketch, a bit crude but should get the point across as to what my initial thoughts were before reading your response; the moment frame beam is parallel to the direction of the ceiling joists, and originally my goal was to have the top of the moment frame (T.O.S.) match the...
Looking for some guidance from those who have more experience then myself. I have a case for a one story building design where I need a moment frame to pick up an approximately 7k lateral load with 17ft of wall length with a rather large door/glazing opening leaving me with too little full...
Hey all, just looking for some general information/guidance as I look into some information regarding timber piles. I have a client who's building a home near the coast with poor soils from grade to approximately 17 feet below grade, and groundwater present around 10-12ft below grade as well...
I'm currently reviewing a situation where my GC needs to put up a temporary wood guardrail around a balcony area as a means of fall protection/so that they can store materials outside. The framing is already installed to the contract drawings, and will be able to handle the expected live loads...
Looking for some general information from those much more educated on the topic than myself: I have a job site where we have poor quality soils, so we're using helical piles to support the building load. The piles were expected to only go down to about 20 ft before reaching their intended sandy...
