2x6 For Loft Floor Joists

2 grade of douglas fir are indicated below.

2x6 for loft floor joists.

Find 2 in x 6 in joist hangers at lowe s today. With only a 5 6 width of the platform i think you will have tight work area up there considering a desk on the wall. Also available for the android os. Dead load weight of structure and fixed loads 10 lbs ft 2.

The span table for a 30 psf live load 10psf dead load floor indicates a required fb value of 1 315 and a minimum e value of 1 800 000. In this case your joists are adequate to support a 30 psf live load and 10 psf dead load. 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.

Span calculator for wood joists and rafters also available for the android os. But larger is not always better when builders are constructing a home or adding a room addition. In the example the joists have a spacing of 16 inches and a span of 11 feet 2 inches. In this video i show how i cut my my joists make packer plates get the joists from the garden up int.

This is part 2 in my series of loft conversion videos. 1 psf lb f ft 2 47 88 n m 2. Sistering is the process of adding a new joist next to each existing joist. Live load is weight of furniture wind snow and more.

You will likely experience some bounce using a 2x4 joist even when on 12 centers. I would suggest 2x6 on 12 centers for a nice solid platform floor. 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. If the desk is on the long wall i say you have a non starter situation.

Joist span and spacing is set by your local building code. 1 ft 0 3048 m. If the attic joists are not adequate one way to strengthen the floor for live loads is to sister the old joists.