Floor Joist Sizes & Span in Residential Home Building (Complete …
I-Joist - APA – The Engineered Wood Association
I-joists are used extensively in residential floor and roof framing. They are ideal for long spans, including continuous spans over intermediate supports. Because I-joists are straight and true, it's easier for builders to avoid crowning and …
I-joist at Lowes.com
What Is a Floor Joist? Overview, Span, Size, and More - The Spruce