Tim Uhler

Uniformity and length. I-joists are manufactured in 60-foot lengths, so there is no upcharge as the lumber gets longer. Each joist is exactly the same depth and width — no wane, no hook, no defects. And we can order I-joists in 1-foot increments, which cuts down on waste.

Engineered strength. To span long distances with solid-sawn lumber, we can decrease the on-center spacing, upsize to a deeper piece of lumber, or install intermediate support to reduce the span. But I-joists are manufactured with several possible strength ratings for each joist depth, which means we can usually keep the on-center spacing the...

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