crane onto top of wall framing in position of how they going to be fix. Nail a piece of timber on these trusses and braced onto the timber flooring to prevent falling off. Tags nail a piece of timer over top of all trusses to hold time together and un-tag each truss when fixing. Mark out position of each individual trusses on top plate at both side of the building, each truss are spaced at 890mm center to center. Mark out position of perlins before the truss pack is open up or the conveniences when fixing in future

Starting fixing trusses from both end of the roof and brace up with timbers on to the timber floor, level end trusses and tag nail pieces of timber on face wall framing. set string line on the ridge on both trusses (the end with a lower truss design for fixing outrigger has to set form the second one in which is same to all other trusses), use dogger block and pack under string line on both end then use it as a mark for setting other roof trusses