Tuesday, February 24, 2009

steps of making a truss roof

to start off doing a truss roof the first step was

1. we put the girder trusses up first because they hold the weight of the other types of trusses.










2. then we put in the hip trusses which go from the corner of the house and meet up at the apex




3. then the jack trusses are put in, one goes in line with the apex and the others go on the bottom cord of the t.g against the hip truss.



4. to finish off the hip end we put in the creeper trusses.

5. now we marked out our standard trusses at 600 centers and stood the 2 end ones up and clamped them to a post, then from the apex we ran a string line across the roof. that was where the rest of the apex's had to go for the other trusses.

6. we now started to stand up the trusses while temperary bracing them off as we went.

7. the next step was to put in the saddle trusses.

8. then from the hip apex we came down the valley and put valley boards on both sides of the valleys.

Monday, February 23, 2009

DAY 2

this morning we got back into it and stood up the rest of our trusses, as we stood each one up we braced it 600mm from the truss befrore it that had been leved up. we then put the saddle trusses in and started to put the valley boards in place.

DAY 1

Truss & Roofing

today we started to erect our truss roofs. first we listened to a speech which explained the do's and dont's about truss roofing. we then filled out a job sheet on what we had to do and what some potential hazards out on the site could be and how to remove or control it. then we went out to the site and set up our scaffold and started building. the first truss to go up was the t.g because that is needed to support the other trusses, once the t.g and standard girders had been screwed into place we then filled in the creeper trusses. just before time ran out we got the main trusses up and braced at each end of the roof and set a string line across the apexs so tommorow we can fill in the rest of the trusses.