Tji Roof Spans

Tji joist specifier s guide tj 4000 july 2019.

Tji roof spans.

Bci joists are specially constructed i joists with flanges made from strong versa lam laminated veneer lumber with oriented stranded board webs and approved waterproof structural adhesives providing outstanding strength and durability. 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. Walls are 8 made of 2 x4 16 oc with double top plate. 9 16 tji 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.

The link below provides additional information and span tables for tji joists in ceiling applications. Their dimensional stability helps resist the warping twisting and shrinking that can lead to squeaky floors. Tj 9001 installation guide for floor and roof framing with tji 110 210 230 360 and 560 joists. Also available for the android os.

Span calculator for wood joists and rafters also available for the android os. The joist sit on top of 2 x 4 walls nailed to rafters. Tj 9006 installation guide for deep depth tji 360 560 and 560d joists. 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.

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 wl4 2 el 2 67 wl2 d x 105 for tji 560 joists δ 22 5 wl4 el 2 29 wl d x 105 material weights include tji weights in dead load calculations. Engineered wood products ewp span and size charts for bci joists. Rafters are 2 x 6 24 oc set on 2 x 8 ridge board notched on to walls. The roof has 7 12 pitch.

Fire safe construction 3 floor performance and tj pro rating 4 5 section 1. I would like to use the loft as a lounge possably adding a dormer on one side of the roof. Tb 824 ceiling joist.