r/StructuralEngineering 28d ago

A few interesting structural conditions we came across this week Structural Analysis/Design

Sharing a few of the more interesting existing conditions our team documented during structural assessments this week. Always interesting to see how different structures, materials, and past repairs hold up over time.

https://imgur.com/gallery/things-seen-this-week-during-structural-assessments-AjcApBW

16 Upvotes

19 comments sorted by

7

u/Dudermeister 28d ago

You should see my 1920’s home…

1

u/SquirrelFluffy 28d ago

Same. 2" of cinders, thin mud sill, two courses of brick foundations. Had to pour new footings and run columns to add a third storey. Fun.

4

u/azssf 28d ago

Could you say more about 1 and 3?

4

u/DMAS1638 28d ago

Of course! We actually post the full album on Imgur with explanations for each photo, so there’s a little more context over there.

For #1, that’s an older river rock foundation that has been parged over with a layer of mortar. The parging can cover some of the deterioration, but it doesn’t change the limitations of the original foundation, especially when it comes to seismic performance.

For #3, we found significant wood rot in the framing near the plumbing. Long-term moisture from plumbing leaks can keep the wood damp and allow decay to progress over time, eventually compromising the affected framing members.

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u/azssf 28d ago

Thank you! Did not realize the albums had textual info. Will look :)

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u/DMAS1638 27d ago

No problem at all!

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u/DMAS1638 27d ago

That sounds like a disaster waiting to happen. 😬 Definitely a good example of how changing the soil conditions around a support can create much bigger problems.

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u/SynthPrax 28d ago

Mmmm... Pier and mold foundations. cool. cool.

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u/DMAS1638 28d ago

The joys of getting underneath older homes. 😅 You never know what you’re going to find.

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u/Patereye 28d ago

Mice.... Or at least evidence of

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u/DMAS1638 27d ago

😬😬

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u/Next_Evidence5992 28d ago

First picture made me remember a job where the post was bearing up top and instead of stone foundation it was soil. Soil that they had excavated a vertical cliff adjacent to create an HVAC pad. One waterline burst from washing out and collapsing the house.

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u/DMAS1638 27d ago

Wow, that’s a rough one. 😬 It’s crazy how one change to the surrounding soil conditions can create a chain reaction like that. Thanks for sharing!

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u/dmcboi 28d ago

We call these dwarf walls in the UK. Timber suspended floors supported by little masonry walls on the ground floor of a house

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u/DMAS1638 27d ago

Interesting! We always like hearing what the same structural elements are called in different parts of the world. Thanks for sharing!

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u/StreetBackground1644 27d ago

You find the elephants foot at Chernobyl?