I have purchased the entire historical series of ACI 318 building codes to understand what were the provisions back in 1970s. And there were a lot of things that have stayed pretty much the same since we started understanding structural engineering and mechanics. The only problem is it is in a...
Btw unbalanced moments are significant on columns that are supporting different length of slab bays. So in the image above, the slab span adjacent to the circled columns are 20' and 30'. This difference creates a significant moment transfer to the column below and a part of this moment transfer...
Buildings do shake in general when there is a construction going on at a site nearby. Currently I am living in an apartment right next to a construction site so there were periods of intense shaking, but that doesn't not affect a building's performance significantly because the buildings are...
I would second there. I do understand he finds a lot of information, but from engineering standpoint he hasn't made a lot of sense personally speaking. I watched one of his video where he said "I don't know what these guys on YouTube calls Puking shear or something." And that's when I stopped...
I think you are talking about me here. So first to clarify, I have been making hard core engineering videos on and off for 2 years now. I have a blog for about 8 years, written 600 answers on structural engineering with calculations in a lot of cases. For “ZERO” money. My YouTube channel isn’t...
I think this is where Bifurcation analysis of column buckling instability can help understand the timeline. So a lot of engineers don't know about this because it is hardly ever taught in colleges or have to wonder about in practice (I was surprised to know about this analysis mainly because I...
I have thought about it for quite some time. Like why the creaking noises and why on the wall. Because the walls are just partition walls and these could very well be just dry walls since the building was built in 1980. I am not sure of cold formed steel existed back then. Again I have not grown...
Charlie,
I completely agree, every structure is supposed to exceed the building code requirements, not just meet the requirements. But a lot of engineers have their hands tied because some developers / architects push the engineers to either reduce the member size or reinforcement tonnage. Again...
I agree. It is not like water will add another 64.4 lb/ft3. A soil saturated with water just has air pockets filled with water and this depends on the void ratio of the soil. Good clarification there.
Hey Nukeman, thanks for sending that link over, and yes I have joined that close group, interesting that we met here again. I have not discredited his findings, what I am trying to explain to everyone in that group is not to panic and question everything about buildings they are living in...
Hey Nukeman, hi! I did try reaching him out couple of times and couldn't do it successfully. I am not sure if I have questioned his findings anywhere else. Also, I am not bad mouthing him, so far what he had done was a really good job at explaining people. And again his latest video does have...
Hey Charlie, are you talking about this image? BTW how do you guys quote someone else's response? https://files.engineering.com/getfile.aspx?folder=b1da8cde-3814-44b0-bd13-d282fe4d9b9b&file=Slab_Column_Joint.jpg
On the point of pool deck last minute changes, here is something interesting. Even if that change wouldn't have been made, just 15' next to those beams that were removed, the deck was still under designed. So regardless of the change, the design of pool deck in general had some issues and would...
Also, I think they structural engineer could have provided bigger column instead of 16x16 columns, but I doubt if the structural engineer even imagined anything like this remotely happening. The high % of reinforcement in the splice region that BI is talking about is definitely a "small"...
Hi Charlie, so about point 2 again, he does mention in his video that the reinforcement was just barely enough to handle the slab's own weight, when someone mentions (in structural engineering community especially) just about the self weight of the member, we consider the member weight only. So...
Hey, this is Jinal and I am new to this forum. But I am pretty sure everyone has seen Building Integrity's video on engineering failures. I have have few comments on it along with a part of incorrect information they may be sending to the user.
1. When he talks about high reinforcement of...
