Also available for the android os.
Max floor joist span.
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.
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.
Dead load weight of structure and fixed loads 10 lbs ft 2.
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.
2 grade of douglas fir are indicated below.
1 psf lb f ft 2 47 88 n m 2.
True floor joist span calculations can only be made by a structural engineer or contractor.
Floor joist span tables for various sizes and species of wood.
1 ft 0 3048 m.
Span calculator for wood joists and rafters also available for the android os.
Joist span and spacing is set by your local building code.
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.