Residential Floor Joist Span Tji Span Tables

Residential structural design vertical structural forces we were about to start learning about floor joist span tables.

Residential floor joist span tji span tables.

It shows the standard span tables for tji s. Joists for use in residential framing applications fall into two different categories. Tree sawed and engineered. 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 page focuses on the tree sawed variety. The tables look overwhelming but they are actually pretty simple to use. 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. They are organized by two main tables one for live load deflections of l 360 and one for l 480.

Tb 813 trus joist tji joist residential bonus room span tables tb 125 wind uplift design for trus joist tji roof joists tb 827 wall tension tie connectors for tji joists. 1 used under dry conditions with lumber moisture co ntent less than 16 percent at time of installation. True floor joist span calculations can only be made by a structural engineer or contractor. 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.

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. Using floor joist span tables. 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. Types of floor joists.

03 01 2014 page 1 of 2 8 9 footnotes. 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. Continuing on from part 1.