**E Joist Span Tables**. For example, floor joists that are 16 inches on center (16″ o.c.) will have maximum spans of 23’3″ if using 2×12 douglas fir dimensional lumber. A wood joist span table is basically a complete and thorough table that shows the exact measurement on each wood joist for each room in a house.

For example, floor joists that are 16 inches on center (16″ o.c.) will have maximum spans of 23’3″ if using 2×12 douglas fir dimensional lumber. Commonly, the table doesn’t only show you the joist span measurements but also the rafters for a complete and detailed reference. It shows how much load the joist could and should take.

### For Example, Floor Joists That Are 16 Inches On Center (16″ O.c.) Will Have Maximum Spans Of 23’3″ If Using 2×12 Douglas Fir Dimensional Lumber.

Steel joists and joist girders are key components of today’s roofing and flooring systems. It shows how much load the joist could and should take. Floor joist span tables table notes 1.

### Cater For Any Larger Spans In The Floor Area Using The Wider Flange Options Of Corresponding Depth.

Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2×4 thru 2×12. Joist spans are based on 50 ksi for the 54, 68 and 97 mil thicknesses, and 33ksi for thinner members. E tables are not suitable as a design tool.

### For 2×12 Southern Pine, The Maximum Span Is.

Listed are 46 tables based on common loading conditions for floor joists, ceiling joists and rafters. View joist & rafter tables. 49 rows the floor joist span tables are based on the loadings given in the amended version of.

### Table Notes Spans Are Based Upon Continuous Support Of Compression Flange Over The Full Length Of The Joist.

Options range more options for more economical floor joist layouts select the economy section (hj240 45, hj300 45 & hj360 63) of appropriate depth to accommodate the spans of the main area of the floor. Spans are based on continuous lateral support of the compression flange. Span tables for joists and rafters 1 american forest & paper association explanation of tables 1.

### How To Use The Span Tables.

A wood joist span table is basically a complete and thorough table that shows the exact measurement on each wood joist for each room in a house. Commonly, the table doesn’t only show you the joist span measurements but also the rafters for a complete and detailed reference. Steel joists & joist girders.