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[–] PsyOp 0 points 2 points (+2|-0) ago  (edited ago)

Why are they using expensive steel when they could be using prefab concrete?

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[–] aria_taint 0 points 3 points (+3|-0) ago 

Infrastructure. You can truck in steel and there's no expiration time on it. Concrete plants would need to be built close to the job site, infrastructure built for the plants including power and water, also non stop trucks bringing in aggregate or even train track built to supply it. Massive logistic issue over prefabbed steel which is absolutely cheaper and the wall can go up 10x faster.

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[–] PsyOp 0 points 1 point (+1|-0) ago 

Prefab concrete wall systems are far cheaper to produce than steel walls of the same height...and they can be shipped from preexisting factories.