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.
Floor joist span.
Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.
Floor joist span tables for various sizes and species of wood.
The spans are based on simple span joists.
Maximum floor joist span for no.
Engineered wood products ewp span and size charts for bci joists.
View joist rafter tables.
1 psf lb f ft 2 47 88 n m 2.
The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel.
Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.
Of bearings and is based on uniformly loaded joists.
The maximum span is measured o c.
Live load is weight of furniture wind snow and more.
While most residential construction uses 2x8 joists with 16 inch spacing there are many other factors you need to consider when determining the proper joist span length.
Continuing on from part 1.
Joist span and spacing is set by your local building code.
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.
Span calculator for wood joists and rafters also available for the android os.
Using floor joist span tables.
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.
True floor joist span calculations can only be made by a structural engineer or contractor.
Dead load deflection is limited to l 360 and total load deflection is limited to l 240.
Dead load weight of structure and fixed loads 10 lbs ft 2.
1 ft 0 3048 m.
2 grade of douglas fir are indicated below.
Also available for the android os.