ACI 350-06 7.12.2.2 requires #4 minimum bar size for shrinkage and temp reinforcement. That is pretty much everything IMO - main bars may not be controlled by temp and shrinkage but they are acting to resist it. Chapter 19 on shells and plate members requires #4 for everything (19.2.7). ACI 350...
https://drive.google.com/file/d/13TNfWE-CQx54UHx0LCKIGxs_yJKqSHWo/view?usp=drive_link
I would not count on pedestal bars that are farther away from the anchor rods than 1/3 hef regardless of the theoretical ld from the intersection of the breakout cone. A lot of movement would need to occur to...
Thanks. I did find the chart equation. I had presumed it was more of a complicated step function. I was lazy and added a goal seek macro and button. Sometimes the solution is out of bounds, but resetting K to 1 gets it back to a reasonable re-solution.
-Mac
Has anyone ever tried turning the alignment chart into an excel spreadsheet that allows direct calculation rather than graphically drawing a line between ΨA, ΨB, and K?
RAM concrete does not automatically account for p-delta in concrete columns. This necessitates a hand calc check on whether...
I agree we are protecting the 1% chance. But, it is about risk not just probability. Our contractor scope is limited to edge protection and cutting tendons. Another sub is handling shoring and demo. Not a fan of this but we are not running the show. We are at a preliminary stage till our client...
Does anyone else specify bent plates at live tendon anchors to control blow out during de-tensioning? I proposed it to a demo contractor and they liked the concept. 16" long x 1/8" thick 6063-T6 channel shape bolted top and bottom with total of four HUS-EZ screws. We were going to use ballistic...
Bones - Yikes. I hate the stiffness of that "base plate". Not sure if it is helping to absorb energy or hurting by causing serious second order forces on the fasteners.
-Mac
We design these systems as part of major facade remediation and roofing replacement projects. The major hurdle is convincing owners to have a permanent system installed. You seem to have made it past that difficult part, though it is not clear to me what your role is - EOR, component designer...
Here is my opinion, which will not be well-received by some individuals on this site. The obsessive haste to provide armchair engineering assessments is wholly unprofessional and inappropriate. Additionally, the act of promoting this type of pseudo-expert analysis through monetized YouTube...
I have received unit pricing within the last month of $400 cu/yd for 250 cu.ft of EPS-12 (Baltimore). Also, the price is very volatile as I was told by the contractor. Good idea to present conceptual alternates for pricing before taking a design all the way with EPS.
-Mac
