Roof Truss Raised Tie

The roof design was made incredibly complicated as a result of the skewed wall along the boundary line maximising the building footprint.

Roof truss raised tie.

The raised tie roof truss imposes a horizontal load onto the wall plate and wall when loaded. The requirement for a vaulted ceiling combined with icf insulated concrete form wall construction added additional design difficulties. Unlike the conventional truss which is fully triangulated by virtue of its bottom chord fixing the top chords together the raised tie roof completes its triangulation at the flat ceiling to sloping ceiling intersection. 400mm cellulose insulation to sloped portion of truss.

Vcl airtight membrane to achieve 3 0 ac hr. 25mm ceiling service cavity batten counter batten roof membrane extra over option. Raised tie truss roof 0 11 w m2k u value. This is a picture of another way of framing a roof a heavy timber truss at very wide spacing.

400mm cellulose insulation to flat portion of raised tie truss. Unlike other trusses which support on the ceiling tie the bottom chord raised tie trusses are supported partway up the lower end of the rafters. As the rafter tie is raised it puts a bending load on the rafter at the point of connection the rafter needs to be deeper as the tie is raised. A raised tie roof truss is a truss where the bottom chord making up the triangle shape moves towards the top of the triangle.

The raised tie roof truss design can go up against different style that when nitty gritty right can ooze a cutting edge feel.