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Working notes on the engineering, written to be useful whether or not you ever hire us. Every formula carries its clause and every catalogue value its table.

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A bridge span being lifted into place.

Designing a lifting lug: AISC 360 or ASME BTH-1?

A padeye carries a whole member in a position nobody designed it for. The proportions AISC 360 requires before its equations apply, the…Steel structuresLifting designASME BTH-1

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