Second Story Floor Framing Jost Spacing

Normally floor joists are spaced 16 inches apart on center.

Second story floor framing jost spacing.

I want this added floor space 2nd floor to support 23000 lbs of house hold furniture no water fixtures. See the image below for an example of joists spaced 16 on center 16 o c. Given that 2x8s are actually 1 inches wide it works out to be 14 inches between each joist. Maximum floor joist span for no.

Looking at this table you will see there is a choice in the size of floor joist 2 x 6 2 x 8 2 x 10 or 2 x 12 and there is a choice in the joist spacing 12 16 or 14. This means from the center of one upright joist to the center of the next. For 7 8 inch panels joists can be up to 32 inches on center and for 1 3 32 and 1 1 8 inch thick panels the joists can be spaced 48 inches on center. Joist spacing for composite decking.

Live load is weight of furniture wind snow and more. You should check with your local building department for construction requirements in your area. Most decking is not strong enough to support longer spans than 16. With some structures floor joists are required to be 12 or 24 inches apart on center.

Some builders reduce joist spacing to 12 on center to strengthen the deck frame or to increase maximum allowable joist spans. I have a 20 x 40 x 18 ft rv building basically 800sq ft which i want to add a second floor. Joist span and spacing is set by your local building code. 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.

1 psf lb f ft 2 47 88 n m 2. As well as human traffic. The floor joist spacing is the distance between the centers of any two installed joists. 1 ft 0 3048 m.

2 grade of douglas fir are indicated below. 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. Most decks use 16 on center spacing for joists. The walls are std concrete block.

To be storage space for 2800 cb ft of house hold.