Engineered Floor Joists Span Table

This performance standard provides an easy to use table of allowable spans for applications in residential floor construction allowing designers and builders to select and use i joists from various member manufacturers using just one set of span tables.

Engineered floor joists span table.

These tables can also be used to determine deck joist span. Engineered wood products ewp span and size charts for bci joists. Lp solidstart i joists are a building material with built in environmental benefits made of engineered wood substrate a renewable resource with a reduced environmental impact raw material procurement targets small fast growing trees in lp s manufacturing process no part of the log goes. Since the example house we are designing for is 12 feet wide we need to find in the floor joist span table a joist size and centering that can span 12 or wider.

With these factors the lightest joist will have a maximum span of 17 feet 8 inches. Spans in floors ceilings and roofs. Apa pris are recognized through icc es esr 1405. The l 480 table with a 40 per square foot live load and a 20 per square foot dead load with a depth of 11 7 8 inches will give you spans according to joint weight.

This is the most common as the typical span is 15 feet. Span refers to the length of the i joist. Reading the table you ll see that 2 x 8s installed 16 apart on center can span 12 4. Joist span table use these tables to determine floor joist spans based on grade of lumber size of joist floor joist spacing and a live load of 30 lbs ft 2 or 40 lbs ft 2.