Floor Joist Cantilever Table

You must use at least five framing nails to attach the rim joist to the ends of your joists.

Floor joist cantilever table. True floor joist span calculations can only be made by a structural engineer or contractor. Many building departments limit joist cantilevers to 24 maximum. Floor cantilevers constructed in accordance with table r502 3 3 1 shall be permitted where supporting a light frame bearing wall and roof only. Floor cantilever spans shall not exceed the nominal depth of the wood floor joist.

Floor cantilevers supporting an exterior balcony are permitted to be constructed in accordance with table r502 3 3 2. Floor joist span tables for various sizes and species of wood. 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 distance your joists can safely cantilever or overhang a drop beam is determined by the size of the joists the wood type and grade of the lumber and the spacing between joists.