Span Rating For 2x8 Floor Joist

2X8 12OC 2X10 16OC 2X10 16OC 2X12 24OC 2X10 16OC 2X10 12OC 2X12 16OC 2X12 16OC P 0 S T S P A C I N G BEAM SIZE 4 -2X8 3 - 2X10 3 - 2X10 3 - 2X12 4 - 2X10 3 - 2X12 4 -2X10 3 -2X12 4 -2X10 3 -2X12 4 - 2X12 4 - 2X12 4 - 2X12 4 -2X12 ENG.

Span rating for 2x8 floor joist. 15 times in feet their depth in inches. Joist span and spacing is set by your local building code. Beam and Joist Span Tables Built-Up Wood Floor Beams Supporting One Floor in a House Maximum Spans for Uniformly Distributed Loads Species and Grade Supported Built Up Beam Size Joist Length 3-2X8 4-2X8 3-2X10 4-2X10 3-2X12 4-2X12 8 9-8 11-2 11-10 13-8 13-8 15-10 10 8-8 10-0 10-7 12-2 12-3 14-2.

Ad Manufacturers and Suppliers of Floor Trusses. A 2x8 up to 12 feet. In the joist span table below the highlighted cell 10-3 indicates that a 2 grade 2 x.

12 rows Depending on various factors the maximum span for a 28 floor joist is 16 6. A 2x8 up to 12 feet. A rule of thumb is 15 times a joists depth but in feet when spaced at 16 centers.

At 16 inch spacing 15 feet 2 inches and 13 feet 3 inches at 24 inch spacing. 2x10 to 15 feet and 2x12 to 18 feet. View Joist Rafter Tables.

L720 L600 L480 L360 L240 L180. True floor joist span calculations can only be made by a structural engineer or contractor. This sample table gives minimum floor joist sizes for joists spaced at 16 inches and 24 inches on-center oc 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.

For example a double 28 beam can span 8-ft. Finest Timber Roof Trusses to Create Extra Storage Areas for Your Build Within the Roof. Code allows 12 foot with 16 inches on center but there is way to much bounce and sag with that span.