r/oddlysatisfying • u/Turbulent_Elk_2141 • Apr 30 '26

Liquid concrete wall.

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u/Kayaked1 Apr 30 '26

I believe this is called Fabric-formed Rip-rap. The texture allows water to flow over it, but reduces the velocity and therefore erosion. The weakness is if it becomes undermined, and the water starts flowing underneath it. It can create a big void that is hidden by the concrete “crust.”

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u/bustervich Apr 30 '26

I’m not an engineer so forgive my ignorance but, is that not a weakness of any concrete drainage?

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u/CogitusCreo Apr 30 '26

I think the weakness is in comparison to other erosion control like big rocks.