2nd Floor Floor Joist Span Chart

Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.

2nd floor floor joist span chart.

Beams of more than one ply must be fastened together with either nails or bolts. Live load is weight of furniture wind snow and more. Floor joist size span and spacing table. The 2012 irc code calls for a minimum of a 32 o c.

Article may contain affiliate links. So the house dimensions will now be 24 x 13. But larger is not always better when builders are constructing a home or adding a room addition. 2 grade of douglas fir are indicated below.

Let s expand our house beyond that 17 2 span capability to 24 feet wide. Anything 5 and above we always at least double cripple. 1 ft 0 3048 m. On longer spans the beam may require much more bearing space as indicated by this table.

View joist rafter tables. Dead load weight of structure and fixed loads 10 lbs ft 2. Floor joist span tables for various sizes and species of wood. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.

When building a house or even a deck it is important to confirm you have the correct joist sizes spans and spacing before you get started. The widest span in the floor joist span table in part 2 of this tutorial module showed that floor joists can span 17 2 if they are 2 x 12s spaced 12 o c. The table excerpt above is simply a sample and may not be valid for your region. 1 psf lb f ft 2 47 88 n m 2.

The extra two inches of vertical distance when a floor is framed with 2 x 10 joists rather than 2 x 12s can be quite important for example. Roof rafter span use this table to determine the maximum lengths of roof rafters based on species and grade of lumber spacing dimensions load and slope. Douglas fir larch lumber species no. Maximum floor joist span for no.

Floor joist span use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size. Staggered pattern with at least a 3 x 120 nail. Common sense tells you that large floor joists can carry more load and spacing joists closer together also increases the load bearing capacity of a floor. Thu sep 13 2018.

Also available for the android os. As an amazon associate i earn from qualifying purchases. Span calculator for wood joists and rafters also available for the android os.