I need some good used steel I-Beams

Really, call the steel distributors in your area and check the new prices. For that volume they might be willing to give you a pretty decent price, not much more than used, and just what you want with little rust.

GWE

Besides checking the steel yards, I'd also call the companies advertising complete steel buildings. Erector Sets for adults.

They might be able to sell you a complete building kit for less than the cost of materials and fasteners, welding up columns and braces to hold those I beams up, the sheetmetal to cover them, and all the engineering and architect time you'd have to pay for to get a set of plans past the building inspectors and pull permits.

(The sentence structure of that last paragraph sucks eggs, and I'm not going to waste time trying to fix it. So there. Nyah.)

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