20 Ft Floor Joist Span

Bci joists are specially constructed i joists with flanges made from strong versa lam laminated veneer lumber with oriented stranded board webs and approved waterproof structural adhesives providing outstanding strength and durability.

20 ft floor joist span. This a rough guideline. 2 grade of douglas fir are indicated below. This chart is for basic reference only. True floor joist span calculations can only be made by a structural engineer or contractor.

The rule of thumb is 6 foot span with a 2 6 on 16 centers. 1 ft 0 3048 m. Dead load is the weight of the structure and any fixed items. How doers get more done.

Floor trusses 5. Floor joist span calculator. 2x10 to 15 feet and 2x12 to 18 feet. Live load is weight of furniture wind snow and more.

To use the joist span calculator below first select the species of lumber you will use for your construction project from the drop down list. 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. The illustrations one for cantilever joists and one for flush rim beam hung joists point out where joist span measurements are taken from the saddle of the ledger mounted joist hanger to the center of a dropped beam or saddle of the. Our joist span charts are for wood joists with a maximum dead load of 10 pounds per square foot and a live load of 40 pounds per square foot.

If you have any questions. A 2x8 up to 12 feet. In typical deck construction with a ledger on one side of the joist and beam on the other the size of the joists is driven by the size of the deck and based on the general maximum spans mentioned above. Next use the buttons in the table to select the maximum length in feet or metres in brackets that your floor joists must span.

Dead load weight of structure and fixed loads 10 lbs ft 2. Maximum floor joist span for no. 75 or greater in. Engineered wood products ewp span and size charts for bci joists.

Designing with wood beam span tables. Does this joist need any center support or can it span 20ft. However when running spf 2 6 floor joists into the floor joist calculator referenced above you get a maximum span of 9 feet 8 inches with a minimum bearing length of 3 inches at each end on 12 centers. 1 psf lb f ft 2 47 88 n m 2.

When making a selection below to narrow your results down each selection made will reload the page to display the desired results. Span entries are listed for 2 6 through 2 12 joists and 12 in 16 in and 24 in. 18 foot 4 20 foot 4 22 foot 2 24 foot 2 26 foot 2 28 foot 1 actual depth. Live load represents the weight of furniture snow etc.

When making a selection below to narrow.