Technical bulletin tb 805 shows a detail for reinforcement of tji joists slope cut to match a rafter pitch.
Tji roof rafters.
Conventional framing the first thing to understand is how a roof framed with wood i joists differs structurally from a traditional stick framed roof.
The tji rafter run is 18 feet.
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.
This detail is intended to reinforce the tji j oist end and not to transfer thrust loads at the rafter heel.
One more important detail.
Engineered to provide strength and consistency ilevel trus joist tji joists are a key part of our silent floor system.
The second floor flat ceiling will tie into the tji at 12 feet hence the need for a vented assembly.
The applicability of this detail is based on the joist reaction at the support.