place trusses

We began to set up trusses two weeks ago,I'll write how to do it in sequence.

Steps to set up trusses:
1.Erecting scaffolding;
2.Trusses are delivered to site,hang them on top plate in correct order,bracing them on the floor temporarily;
3.Reading the plan of setting up trusses;
4.Marking trusses space;
5.Position gable end truss.Mark centre of building width, also mark centre of bottom cord. These two marks will align the truss to the centre position.Temporary brace and plumb both gable trusses
6.String a line between the two apexes,one is the front,another is the second truss from back;
7.Position intermediate ( common ) trusses.Position each truss according to the markings along the top plates,align the apex of each truss with the string line ( gable-gable );
8. Nail ceiling runner at the centre along these trusses and fix brace on both gable trusses.
9.Fix purlins on the trusses.150mm from the apex to the lower side,spacing is 600 mm and 500 mm.The lowest is flush with the edge of rafter;
10.Fix outriggers to gable trusses and fix fly rafters to outriggers;
11.Fix strap bracing at front area and back area;

We haven't finished it yet,we'll continue do it next week.