Residential Floor Joist Span Tji Span Tables

1 used under dry conditions with lumber moisture co ntent less than 16 percent at time of installation.

Residential floor joist span tji span tables.

03 01 2014 page 1 of 2 8 9 footnotes. Using floor joist span tables. Within each of those two tables the information is divided again into to sections one section for a dead load of 10 pounds per square foot psf and one for 20 psf. True floor joist span calculations can only be made by a structural engineer or contractor.

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. Tji 360 joists 3 8 25 117 8 14 16 1 tji 560 joists 7 16 3 117 8 14 13 w uniform load in pounds per linear foot l span in feet d out to out depth of the joist in inches el value from table above for tji 110 210 230 and 360 joists δ 22 5 wl 4 2 el 2 67 wl 4 d x 10 5 for tji 560 joists. Joists for use in residential framing applications fall into two different categories. The tables look overwhelming but they are actually pretty simple to use.

Table r502 3 1 1 shall be used to determine the maximum allowable span of floor joists that support sleeping areas and attics that are accessed by means of a fixed stairway in accordance with section r311 7 provided that the design live load does not exceed 30 pounds per square foot 1 44 kpa and the design dead load does not exceed 20 pounds per square foot 0 96 kpa. 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. 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. It shows the standard span tables for tji s.

Design properties 16 floor span and load tables 17 allowable holes 18 roof span and load tables 19 cantilevers 20 21 framing connectors 22 23. Types of floor joists. They are organized by two main tables one for live load deflections of l 360 and one for l 480. Residential structural design vertical structural forces we were about to start learning about floor joist span tables.

Continuing on from part 1. Span tables building division 5510 overland ave suite 110 san diego ca 92123 858 565 5920 888 336 7553 http www sdcpds org pds 415 rev. The floor joist span chart and building code requirements are based on data from the 2012 international residential code using number 2 lumber.