Method to construct roof truss for building involves forming component outside building with two parallel purlins and roof beam fixed under purlins, which is set on building with rafters

摘要

The method involves forming a component (13) outside the building with two parallel purlins (1,2) and a roof beam (3) fixed under the purlins. The component and rafters are set onto the building. The rafters are fixed to a ridge beam (6), the purlins, and inferior purlins arranged on the building. The ridge beam is preferably fixed to the roof beams of the component outside the building, using studs (14). An Independent claim is included for a component for constructing a roof truss.