Ceiling Joist Span Chart

Prostud limiting height charts new clarkdietrich itools structural stud lookup tool interior wall heights w structural framing interior. 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. Ceiling joist spans for common lumber species uninhabitable attics without storage live load 10 psf l δ 240 check sources for availability of lumber in lengths greater than 20 feet.

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Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.

Ceiling joist span chart. There are six choices. This ceiling joist span table is based on the 2012 irc for uninhabitable attics with limited storage. While every effort has been made to insure the accuracy of the information presented and special effort has been made to assure that the information reflects the state of the art neither the west coast lumber inspection bureau the american wood council nor its members assume any responsibility for any particular design prepared from this online span calculator.

Span exceeds 26 feet in length. Allowable limiting heights spans contact clarkdietrich technical services at 888 437 3244 for any questions on tables below. Interior framing use iprostud in clarkdietrich itools to quickly lookup the interior framing system you need.

Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. Sixteen inch oc spacing of ceiling joists made from 2 southern pine allows for a maximum 13 inch span length. It covers 2 common lumber species and sizes at 20 pounds per square foot load.

2 x 12 s are not listed because you can span pretty much whatever you want. Floor joist span use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size. The spans for joists according to the code is far more than we find acceptable.

Large room joist spacing. We have engineered this calculator to provide spans which will produce a solid built house with no bounce in the floors or any swags in the ceiling. If this is the case with your structure use the floor joist table to determine maximum joist length load.

Ceiling joists of the first floor of a two story structure often serve as floor joists for the second floor. The lowest is a plain ceiling joist with no storage 10. Joist span tables use these tables to determine lengths sizes and spacing of ceiling joists.