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I'm trying to use a piece of composite decking as a filler between a CFS 16 gage (54 mil) stud and a steel ledger angle. A metal stud wall is covered with a 5/8" thick sheathing - non-structural type material. The idea is to cut out a small 2" x 4" piece of sheathing at each stud and then...

Hot spot in Santo Domingo full of people and the roof suddenly comes down. Story here: https://nypost.com/2025/04/08/world-news/at-least-13-dead-when-roof-collapses-at-popular-dominican-republic-nightclub/ Quick Instagram video of the collapse here:

I’m sure a lot of you have heard about the significant flooding occurring in northwest Iowa, Minnesota and South Dakota recently. I came across this photo of a house that had been significantly undermined by the flooding. We’ve discussed here in the past about how we structural engineers love...

Videos show a several buildings not fully collapsed but only severely leaning.

The Times building (Flatiron) in NY - 1903

Directly under a large office building - tunneling being performed nearby. https://www.youtube.com/watch?v=Ui_OYgYjchk

Micro-burst storm and heavy rain - then an upper block-brick wall collapse (probably due to high C&C wind concentrations at the end of the building). Looks like an old apartment building with unreinforced block masonry walls...

A printed house in Iowa was being built in Iowa and the test cylinders apparently came in at >5,000 psi compressive strength. However, upon testing the concrete in place it wasn't that strong so they decided to tear it down and start over....an engineering failure of sorts...

Here's a news link. https://apnews.com/article/mexico-tamaulipas-church-roof-collapse-fa4f4a42499533ee8d3517f349ae5d14

Looks like poor roof joist bracing during erection. 6 workers rescued after construction site collapse in Glendale, CA.

We have a case where we are trying to "fine tune" a weld of a structural member to a plate such that the weld will fail at a specific load...truly fail. The reason is we don't want any of the adjoining connections or members to fail first...just the weld. This is somewhat like seismic design...

A continuation of our discussion of this failure. Best to read the other threads first to avoid rehashing things already discussed. Part I thread815-459166

Large sinkhole opens up beneath mobile home in Florida Link

I have a situation where I am being asked to design an in-ground concrete sump pit to house a sump pump. The pit is fed via an underground pipe from a rail car pan system that is intended to collect chemical spills from rail cars should an accident happen. The chemicals for different pits...

Supposedly a micro-burst knocked out an end wall and part of the end bay of roof while kids were playing basketball inside. A news report of the event: https://www.youtube.com/watch?v=Tw6MplxjSqs A video of post-storm damage: https://www.youtube.com/watch?v=EEc87_nHpgU From the videos: 1...

We recently came across an question in steel weld design and forwarded this to AISC for their response. I thought I'd post it here to see what others think: We are trying to design a beam-to-column connection using a seat under the beam. The concept is to also include a top flange clip angle...

A continuation of our discussion of this failure. Best to read the other threads first to avoid rehashing things already discussed. Part I thread815-436595 Part II thread815-436699 Part III thread815-436802 Part IV thread815-436924 Part V thread815-437029 Part VI thread815-438451 Part VII...

In downtown - nice "cutaway view" of the below-grade utilities. Link to City of Pittsburgh Twitter - video there of them hoisting out the bus ENR's short news article on it: Pittsburgh Twitter Link

A continuation of our discussion of this failure. Best to read the other threads first to avoid rehashing things already discussed. Part I thread815-436595 Part II thread815-436699 Part III thread815-436802 Part IV thread815-436924 Part V thread815-437029 Part VI thread815-438451 Part VII...

Is it just us or are the roof C&C wind charts a complete mess? The charts show a scale value on the left side but then dictate an equation based on THETA (roof slope) that when plugged in to the equation don't come even close to the value of the line on the chart scale? (Section 30.3 for...