There are (7) tendon groups with (3) anchorages each that are affected, so (21) total anchorages. The original design is a banded/distributed two-way flat plate and these anchorages are all in the distributed direction. I appreciate the insight and I'll look into the elastomeric coating for the...
Sorry for taking a while to get back to this thread, but I was able to get some additional observations of the tendons. It seems like they had an issue for the formwork pushing out during the concrete pour or something similar and the contractor decided to cover it up. No idea how this got past...
Agreed, it's a bit of a head scratcher.
I haven't seen this situation at the other, lower level slab edges which leads me to believe that they hopefully only screwed up this level (or elevation). The chipping back is an interesting observation. The contractor is pulling off OSB today so I...
I am working on an existing building with three levels of elevated PT slabs. The building was built circa 2000 using unbonded PT tendons. The contractor is currently completing the strip portion of a full strip & reclad and discovered some PT tendons that appear to have never been cut or at...
Thanks for sharing those articles. I've contacted some testing agencies but haven't heard back yet so figured I'd pose the question to the forum in the meantime.
Does anyone have guidance on what is a typical size for a steel testing specimen? We have a historic structure from the early 1900's and want to perform testing to determine chemical composition (to determine weldability) and strength properties. Initially we had specified 2"x2" specimens for...
It looks like those are the new pass rates. I took this snip in June 2024 so that I wouldn't have to dig to compare pass rates when the new ones came out. 55% pass rate dropping to 14% for buildings is crazy.
The worst (since 2011) vertical buildings pass rate was 26% for first-time takers and...
I personally wouldn't define this as a storage warehouse so I don't believe the 125 psf live load is required. If you look at ASCE 7-16 Table C4.3-1 there are some additional minimum uniform distributed live loads that you can use for guidance. I recently did this for a theater gridiron floor...
Looks like I was mistaken, and these are the results that I had been shown. Sorry for the misinformation all. I'm very interested to see how CBT affects these results, especially lateral forces bridges. Just looking through the last few BRPELS newsletters the pass rates have been abysmal for the...
Passing rates probably aren't updated because it's NCEES, and updating their website doesn't make them more money. My boss received some advance passing data for Washington State and there were zero passes for bridge lateral depth according to him, but I haven't reviewed it myself. Apparently...
Honestly this type of writing seems to be made for AI. When I was writing my application I also had a problem just getting started, so I prompted ChatGPT a few times with different projects and for different topics. It helped a lot because some of the application questions were pretty silly and...
Classic contractor comment. I personally had two single family projects with steel moment frames last year, and I know my boss has specified moment frames many times over the years for this exact kind of situation where you don't have any usable shear wall segments to preclude a large cantilever...
The repair is mainly sistering new joists to the old joists. We considered removing and replacing but that adds a lot of cost and disruption to tenants. The floor is all wood framed so no welding required. While shoring might not be strictly required, I want to preclude any ceiling cracking and...
Just getting back to this project, thanks for all of the replies! Reassuring to know I was going the right direction.
Turns out this load case governs for my design as well, thanks for the tip.
I'm designing a repair procedure for some deteriorated joists in an apartment building, and need to provide a shoring design for construction. It is a wood framed floor and has (2) layers of gypsum ceiling below, which will not be disturbed. The repair procedure is all done from above so that...
