Engineered Floor Joists Span Table

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.

Engineered floor joists span table.

Fire safe construction 3 floor performance and tj pro rating 4 5 section 1. 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. With these factors the lightest joist will have a maximum span of 17 feet 8 inches. This is the most common as the typical span is 15 feet.

So our house would look like the picture below with all floor joists 2 x 8. Floor joist span tables for various sizes and species of wood 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. Tji joist specifier s guide tj 4000 july 2019. Reading the table you ll see that 2 x 8s installed 16 apart on center can span 12 4.

Engineered wood products ewp span and size charts for bci joists. 9 16 tji joists design properties 6 floor span and load tables 7 8 tips for preventing floor noise 8 allowable holes 9 cantilevers 10 11 roof span and load tables 12 13 framing connectors 14 15. Span refers to the length of the i joist. Bci joists are specially constructed i joists with flanges made from strong versa lam laminated veneer lumber with oriented stranded board webs and approved waterproof structural adhesives providing outstanding strength and durability.