2x4 Ceiling Joist Span

So what i m really asking is this.

2x4 ceiling joist span. Haldi gave good advice about adding the 2x6s. Simplified span tables for southern pine lumber and glued. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.

Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. The 2x4 s have no structural value in carrying the drywall but are still holding the wall in place. If this is the case with your structure use the floor joist table to determine maximum joist length load.

2 x 12 s are not listed because you can span pretty much whatever you want. Ceiling joists of the first floor of a two story structure often serve as floor joists for the second floor. I have a garage with a open ceiling height of 16 and i m building an office 10 by 10 with a ceiling height of 10 feet.

For other grades and species and for other loading conditions refer to the awc stjr. Joist span tables use these tables to determine lengths sizes and spacing of ceiling joists. The space on top of the ceiling will be used for storage.

Table r802 4 1 ceiling joist spans for common lumber species uninhabitable attics without storage live load 10 psf l δ 240. This will support a room ceiling that is 10 feet long on one side as in 10 foot by 15 foot or 10 foot by 17 foot rooms which is a standard dimension for many rooms in residential construction. This ceiling joist span table is based on the 2012 irc for uninhabitable attics with limited storage.

Sixteen inch oc spacing of ceiling joists made from 2 southern pine allows for a maximum 13 inch span length. View joist rafter tables. Span calculator for wood joists and rafters also available for the android os.