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Or composite rebar. Basalt fiber is sometimes used. Way cheaper than stainless and just as rust proof
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Fiberglass rebar is comparable in cost, stronger, and not subject to water/salt damage. Rusting steel expands and cracks concrete from the inside, id want to avoid that. I’m actually building a pool right now using it instead of steel.
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‘a little more costly?’ Lulz.

316 is an order of magnitude more expensive than the crap used in rebar.

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In project budgeting the material cost difference may well be relatively insignificant
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Sure, but that’s not what was said.
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