Residential Floor Joist Span Table

Of bearings and is based on uniformly loaded joists.

Residential floor joist span table.

Residential structural design vertical structural forces we were about to start learning about floor joist span tables. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. The maximum span is measured o c. View joist rafter tables.

Design properties 16 floor span and load tables 17 allowable holes 18 roof span and load tables 19 cantilevers 20 21. Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size. Continuing on from part 1. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12.

Joist span table use these tables to determine floor joist spans based on grade of lumber size of joist floor joist spacing and a live load of 30 lbs ft 2 or 40 lbs ft 2 these tables can also be used to determine deck joist span. Low pitch 6 12 or less 14 15 roof span tables. Floor joist span tables for various sizes and species of wood. Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall.

Apa performance rated i joists pris are manufactured in accordance with pri 400 performance standard for apa ews i joists form x720 this performance standard provides an easy to use table of allowable spans for applications in residential floor construction allowing designers and builders to select and use i joists from various member manufacturers using just one set of span. While most residential construction uses 2x8 joists with 16 inch spacing there are many other factors you need to consider when determining the proper joist span length. Joists design properties 6 floor span and load tables 7 8 tips for preventing floor noise 8 allowable holes 9 cantilevers 10 11 roof span and load tables 12 13 framing connectors 14 15 section 2. High pitch 6 12 to 12 12 16 17 load bearing cantilever tables 18 21.

True floor joist span calculations can only be made by a structural engineer or contractor. Using floor joist span tables. The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel. Don t worry you won t need to do a lot of calculations in determining the size and placement of the structural framing within your house design.

For i joists we combine laminated veneer lumber lvl lp solidstart i joists have been evaluated by ccmc for. The spans are based on simple span joists. This sample table gives minimum floor joist sizes for joists spaced at 16 inches and 24 inches on center o c 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.