I had an interesting call today and I am looking for some help and opinions.
Background:
This is in regard to the construction of a substation, so lots of cantilever columns with 4+ anchor rods. These structures are installed without any grout under the baseplate, instead they are installed...
As many on this forum know, there are a couple of previous threads that address the debate of anchorage vs development length for rebar that KootK has done a great job of spearheading. Here are a few of them:
thread507-401855
thread507-379988
What I didn't know is that ACI 318-19 now addresses...
This happened to the building I work at two nights ago in a wind/thunder storm. It happened at night while no one was here so no one was hurt. It's certainly not a good situation (could have been a lot worse), but I can't help but nerd out on reviewing the structural damage and see the failures...
According to the story, this section of the line was built in 2012.
https://www.cnn.com/2021/05/04/americas/mexico-subway-collapse-intl-hnk/index.html
The very beginning of this video shows the collapse via security camera footage...
First, I know that there have been many threads on the various structural analysis programs in the past, and I have read many of those. That said, these programs are ever changing and adding new features (and bugs) and I would like to hear people's current thoughts, specifically about RISA-3D...
I just ran across these and am curious to see if anyone has seen or used them yet?
https://www.tstud.com/
https://www.youtube.com/watch?t=140s&v=mxDSulcLpAE
It is essentially a truss that uses 2x3's as the cords and wood dowels as the webs (5.5" depth). It is sold both bare as well as with...
AISC Design Guide 24 presents a connection design example of a beam over HSS column connection (Example 4.1 in section 4.5). My question is: Would there be any change in the cap plate design (thickness determined to eliminate prying) if the cap plate has a center hole cut out to allow for...
I am curious about people's experience using threaded rebar (14J and 18J) as anchors for transmission towers.
Do you specify the use of 14J and/or 18J threaded rebar for anchors? If so, have you had any push back from suppliers. My experience has been that these are getting harder and harder...
I have an equipment foundation that needs to be frost protected. In this case, the frost depth is 48".
In section 4.2 of ASCE 32 it states, "Foundations placed on a layer of well-drained, undisturbed ground or fill material that is not susceptible to frost shall have the thickness of such a...
