Ceiling Joist Span Tables

These 46 tables are based upon design values for visually graded southern pine dimension lumber that became effective june 1 2013. For each application a pdf download is available. Span calculator for wood joists and rafters also available for the android os.

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Table r802 4 1 ceiling joist spans for common lumber species uninhabitable attics without storage live load 10 psf l δ 240.

Ceiling joist span tables. Click on a span to generate a full calculation you can adjust the exact span. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. Ceiling joist spans for southern yellow pine douglas fir and eastern spruce.

Tables such as those for rafters floor joists and ceiling joists require the spacing of members to be known or selected in order to obtain the required size for a given span. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. Joist span tables use these tables to determine lengths sizes and spacing of ceiling joists.

Joist and rafter span tables. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. Tables listing maximum spans for southern pine joists and rafters are detailed below.

View joist rafter tables. If this is the case with your structure use the floor joist table to determine maximum joist length load. These span tables are for 16 o c.

Also available for the android os. Plain ceilings are sized at 10 lb loads while the ceilings with storage are sized for 20 lb loads. It covers 2 common lumber species and sizes at 20 pounds per square foot load.

Applications using southern pine. For other grades and species and for other loading conditions refer to the awc stjr. Spans for ceiling joists shall be in accordance with tables r802 4 1 and r802 4 2.