Tji Roof Rafters

Tj 9001 installation guide for floor and roof framing with tji 110 210 230 360 and 560 joists.

Tji roof rafters.

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. Tj 9510 installation guide for floor and roof framing with tji s31 s33 and s47 joists east canada. These materials and construction methods make a strong and straight roof under normal conditions. Conventional framing the first thing to understand is how a roof framed with wood i joists differs structurally from a traditional stick framed roof.

Design of a bending member such as joist header or rafter. I d like to fasten a layer of osb under the the 11 7 8 tji rafter flanges. The next morning the students set up three stations to cut the different size rafters. Engineered wood products ewp span and size charts for bci joists.

The gable roof has two different pitches the front is a 12 12 and the rear is a 6 12. Tj 9006 installation guide for deep depth tji 360 560 and 560d joists. For concentrated vertical load transfer capacity see 1d. The rafters to the left of the lvl extend the roof above a larger room below on the first floor.

First they made i joist cross cutting jigs from osb scraps and made a few practice cuts. The 12 12 will be mostly open to below. It s 1 1 2 stories and the second floor will have a flat vented insulated ceiling likely cellulose blown to r60 under the 6 12 pitch. By the end of the class about 90 minutes they had two thirds of the tji roof rafters cut and ready for installation.

As roof design gets more complex with longer rafters and multiple peaks you can be confident that timberstrand lsl has the strength and stability to meet your needs and accommodate creativity. In a typical roof framed with dimension lumber the rafters rest on the exterior wall top plate at the lower end and bear against a ridge board at the top.