Raised Tie Roof Truss Calculator

Roof layout and pitch as per plan.

Raised tie roof truss calculator.

Trusses can be constructed with smaller sized lumber than rafters and often their cost is not significantly higher than normal rafters. Our roof rafter calculator tools are handy for calculating the number of rafters needed rafter length calculator lineal feet of rafter board feed in ridge and sub facia and the total board feet in the roof. Enter your existing heel size or rafter size enter two of the span height pitch fields. To use the truss form existing roof dimension calculator.

Use of manufactured roof trusses can dramatically cut labor costs when framing a gable roof compared to building rafters. Engineered raised tie truss utilising hydraulically press plated treated timber with trusses set at centers in accordance with building regulations and structural engineer s calculation. Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal. The tool will calculate the missing field.

It will use the current cost of wooden rafters based on the average price found at home improvement stores. The important point to keep in mind when you use your truss calculator is that every truss calculation is completely unique and is based on the size of your roof and its specific dimensions. Consult irc table r802 5 1 for rafter span adjustment factors for rafter sizing with raised ties l rafter span w load on rafter l x rafter spacing x roof design load h height of ridge above plate h distance between tie and ridge t tie force w 2 x h h x run rise.