Agree with releases and support idealizations. Disagree that neglecting gravity is the move.
Parametrize the brace locations but keep them at 45s.
Lateral: shifting braces towards posts generates very high axial brace forces and vice versa.
Gravity: opposite of lateral.
Sweet spot should...
I could see a clash where the rim-board-as-header is strapped for continuity. Give thought to how much space you’ll need on the inboard face of the rim board to dedicate to straps relative to the truss hangers.
Not uncommon to use rim board as header for full-height openings. I can’t weigh in on the truss bit, as I’ve never dealt with this situation, which is basically a rim board at the roof instead of at the floor.
Your computed axial shortening is at midspan, at the point of maximum moment, right? Maybe I’m just tired from work, but I feel that the axial chord force would be zero at the ends, as the moment is zero. Apologies if I’ve missed something obvious; I should do as you did and convince myself with...
I’d like to expound on this by sharing that some state boards explicitly crack down on what could be construed as “teaching” structural engineering to lay persons. We had that issue in Texas, specifically. Their reasoning: it’s dangerous to give someone only 2 of the 2,000,000 tools they need to...
Advice to other practitioners is free; opinions to lay persons bear risk and therefore cost money.
I suspect there’s a very good reason for that. Engineers should command a fee for their services, wouldn’t you agree?
If you can, then use anchor reinforcement, which transfers load from the anchors to the structure. Anchor reinforcement precludes concrete breakout completely. Refer to 17.5.2.1 of ACI 318-19(22); you're just developing steel with 70 kips on either side of the breakout plane.
Supplementary...
Doesn’t OSHA require 4 anchor bolts minimum per column?
Anyway, your post reminded me of this video @ 26:07.
1. Guy up the frame until it aligns. Presumably, your design accounted for initial imperfections and resultant secondary stresses.
2. Nothing conceptually wrong with encasing with...
Giving OP some grace: Anything can be made to work, but I still prefer the first detail. I haven't seen the second detail, either, and it presents a couple of questions. Are both columns stressed equally enough that a crack won't develop through the reentrant corners? Are the bearing pressures...
Disclaimer: I know absolutely nothing about aviation.
That little photo caption at the end implies that this happened because a private jet cut the plane off. It felt shoehorned in there; it’s not addressed in the body of the article. Is Fox diminishing that fact?
https://www.aisc.org/steel-solutions-center/engineering-faqs/5.3.-other-general-information/#9570 cites DG 21 as a source of knowledge for lamellar tearing.
"Who would you rather have step on you?" :ROFLMAO:
We designed some formwork a few years ago and just used hydrostatic pressures. Dunno that I agree about the pressures being the same. Force of pure liquid acting up on lid at top-right corner is 0, as the liquid wants to drop on the right and...
