Floor Joist 2 X 10

2 grade of douglas fir are indicated below.

Floor joist 2 x 10.

Maximum floor joist span for no. Spaced o c species grade 30 lb ft 2. 2 x 8 joists spanning only 8 feet is more than enough. 1 psf lb f ft 2 47 88 n m 2.

But larger is not always better when builders are constructing a home or adding a room addition. Find 2 in x 10 in pressure treated lumber at lowe s today. However with this type of situation the heavier the better so you will have a very stable and secure platform with the use of 2 x 10 s. 1 ft 0 3048 m.

Common joist spacings for 2 by 10 joists and other dimensional lumber sizes are 12 16 and 24 inches. Live load is weight of furniture wind snow and more. 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. 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.

This product is third party certified signifying sourcing from renewable and environmentally managed forests. The maximum span distance for 12 inch spacing is greater by as much as 30 percent compared to 24 inch. Joists that are closer together can support more weight which allows the joists to span a longer distance than joists spaced further apart. For example in the joist span table below the highlighted cell shows that 2 x 8 southern yellow pine joists that have a grade of 2 and are spaced 24 apart can have a maximum span of 10 feet 3 inches 10 3 if designing for a live load of 40 lbs ft 2.

Depending on the length of the home and the number of floor joists the additional cost for the heavier floor joists may not be very substantial.