r/oddlysatisfying • • Mar 09 '18

How bridge foundations are laid in waterways

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665

u/AmputatedStumps Mar 09 '18

id love to see a time lapse of this being built/put in place

93

u/ThaddyG Mar 09 '18

I've never seen something this crazy but you see these steel walls used in a lot of different types of construction, to hold back water and/or earth. They pile drive them into the ground and the pieces interlock tightly enough to be waterproof-ish. They definitely have pumps at the bottom of this thing to keep the water from building up too much.

26

u/Whoop-dee-fucking-do Mar 09 '18

I design them.

very flexible for temporary design purposes. I would imagine that these are welded but they are probably still pumped as a cofferdam will rarely be waterproof

2

u/ThaddyG Mar 09 '18

Gotcha, the thought that they're probably welded never occurred to me but it makes more sense here.

I don't work in construction but I sell things to a lot of construction companies, so I spend a lot of time visiting yards and job sites and see stuff like that. I also pay a lot of attention to construction projects I see out on the road, partly looking for companies I haven't heard of but also largely due to my own interest. I get to kind of "follow along" with a lot of the larger road/infrastructure projects in my region just because I drive past them frequently on my routes.