Recent content by danvines

Ultimately, I hope to avoid replacing any decking (even where it has corroded through. I believe it was used to serve as a form deck for the concrete fill placed on top. To remove and replace it would be extremely difficult and would run the real risk of damaging the cables. Removing paint to...

The only possible mechanism for resisting uplift is the dead weight of however much “concrete” fill is on top of the metal decking. We are still hopeful that original drawings can be located. Even if they are, we are probably going to take some cores to verify the thickness and...

Hello all. I've been asked by a roofing contractor to assess an existing roof structure that is unlike anything I've ever seen. The building was originally constructed as a high-school gymnasium in metro Atlanta in the late 1950s or early 1960s. It is oval in plan and appears to be a...

Thanks everyone. For my case (really high aspect ratio and really thin plate) and the loads involved (pretty small), I decided it would be conservative to simply use tributary areas (full plate height at supported long top edge and 1/2 plate width at supported narrow sides).

Thanks. I think I just needed to hear someone else say that.

I’ve done it a myriad of ways - all of the above, plus encasing in concrete, and more. In most warehouse environments, where forklift impacts occur, replacement of the damaged section by shoring and welding in a new one is a piece of cake.

I’m at my wits’ end. There’s GOTTA be a “simple” formula or tables for the reactions on a 3-sides pinned, 1-side free rectangular flat plate. I know how to calculate maximum stress and deflection, but I need reactions under a uniform load. Please help.

For lag screws into the top of a multi-ply wood beam, must one account for the minimum edge distance of each ply i.e., must the lag hit near the center of an individual ply, or can they be placed 1.5D from the edge of the whole beam, even if that means they hit too close to the edge of a ply?

I have an opportunity to help out a contractor friend. Without going too deep into why, they need to remove the face shells from an existing reinforced jamb and replace them with ground-face block (see attached photo). The EOR is concerned that doing so will create a cold joint and prevent...

racookpe1978 - that is correct. There are no visible distortions in either the web or opposite flange in either location. And you are correct, there is a much smaller dent in the top chord photo. I was focusing on the two areas with the greatest damage.

I have a steel roof truss with top and bottom chord members fabricated from W12x96 shapes (A992 steel). After erection, but before roof decking was installed, there was a crane accident which resulted in the 1-ton overhaul ball swinging around like a yo-yo and impacting both the top and bottom...

Thanks for the input guys. We had some good solutions/ideas from both forums. I had a guy w/ a pressure grouting company come out this afternoon to give me an opinion. He agreed with my fears of using the kind of pressures typically associated with real "slab jacking" techniques that close to a...

Thanks Mike. I agree about the compaction - especially against a vinyl pool. My intent this morning, to try and get a flow rate on the water. I just don't see how it could be coming from the pool. I think I would have noticed that much water going out.

Sorry about the issue with the photos. I would edit the original post, but I don't see that I can. Here they are in order.

I'm going to post this in both my favorite home improvement forum and in my favorite engineering forum because at least 5 of you guys are going to come up with a better idea than I've though of. This is my house, so it's my nickel. See the problem...