Floor Joist Table Span

Residential structural design vertical structural forces we were about to start learning about floor joist span tables.

Floor joist table span.

Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. Dead load weight of structure and fixed loads 10 lbs ft 2. 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.

Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size. Engineered wood products ewp span and size charts for bci joists. 1 psf lb f ft 2 47 88 n m 2. You need to measure the complete span of your floor joists together with the distance between them the centres and the size of the timbers.

Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. View joist rafter tables. The maximum span is measured o c. Of bearings and is based on uniformly loaded joists.

If your old joists do not meet the requirements set by the table they are either supported. Using floor joist span tables. 2 grade of douglas fir are indicated below. Maximum floor joist span for no.

Don t worry you won t need to do a lot of calculations in determining the size and placement of the structural framing within your house design. 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. This should be compared to the table. 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.

Live load is weight of furniture wind snow and more. The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel. 1 ft 0 3048 m. The spans are based on simple span joists.

Continuing on from part 1. Floor joist span tables for various sizes and species of wood. True floor joist span calculations can only be made by a structural engineer or contractor.