2x12 Floor Joist Span

Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.
2x12 floor joist span. True floor joist span calculations can only be made by a structural engineer or contractor. Maximum floor joist span for no. 1 ft 0 3048 m. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.
We ve included 2x6 2x8 2x10 and 2x12 joist spans and more. 2 grade of douglas fir are indicated below. This sample table gives minimum floor joist sizes for joists spaced at 16 inches and 24 inches on center o c for 2 grade lumber with 10 pounds per square foot of dead load and 40 pounds of live load which is typical of normal residential construction. 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 these tables can also be used to determine deck joist span.
Also available for the android os. See our complete chart of floor joist size span and spacing requirements before you build. Dead load weight of structure and fixed loads 10 lbs ft 2. View joist rafter tables.
Live load is weight of furniture wind snow and more.