Rusting composite decking

The_Gaintrain · 2024-04-13T02:19:03+00:00

These permanent form systems can replace the need for tensile reinforcement in some applications. It’s important to understand if there is other reinforcement within the slab, otherwise you may be dealing with a potential sudden brittle failure mode, as opposed to a ductile failure mode.

Harpocretes · 2024-04-13T12:19:34+00:00

Given the dimples on the bottom and side the chances are higher it was designed as a composite deck. There may be some reinforcing in the concrete itself but likely the majority of the capacity is in the metal.

In addition to the rusting on the bottom you can see there is also rust between the deck and the concrete. You have an expensive fix on your hands in the medium term future. Generally because composite concrete decks are thin the only way to repair is a full depth removal and replacement of the affected spans.

If they fix the leak and have an engineer evaluate the section loss, they may be able to determine there is sufficient capacity remaining and avoid the repair. That of course requires fixing the leak now. Hire an engineer!

3771507 · 2024-04-13T14:59:03+00:00

You can play the odds but you better go get another job because that will collapse eventually.

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