The roof - day 2

Well, to connect with the last post: I did get an idea for the four big columns.

 Instead of individual small peaces of cariolas, I connected three full 3" cariolas  to make one long piece.  Then, we were able to place this long piece onto all four columns, while they are still on the ground.With four strong men, and a fifth one ready with the welding machine, we then lifted the four colmns in place. The welder connected a rebar crossing from column A that we just lifted, with column B on top of the wall, and the large column B with the little column A on top of the wall. This criss-crossing of rebars held the columns quite stable in place.

In the next step, two guys lifted the truss on top of the three columns and welded it all together. Then repeated the same for the other three trusses.

With all the trusses in place, we lifted the prepared 18m (60ft) long, 1.2m (4 ft) wide 6-fold H of 4" cariolas in place, secured them with straps, ensured there was the same overhang on both sides, and welded them in place. 

The final stop to finish the structure, which will hold the sheet-metal, was then really simple. Just weld the 18m long 4" cariolas at a distance of about 1m from each other form the top to the bottom.

After the 6-fold H was in place, the masons returned to putting plaster onto the walls, and the second roofing crew went back to the other side of the roof, adding more sheetmetal onto the structure that was completed yesterday.

By the time the evening of day 2 came, the eastern half of the roof had 5 of the 18 sheet metals installed! Yeay! And the western half of the structure was completed as well.

A very productive day! And the part that I was most concerned about - aside of installing the main cavallo - was taken care of, and turned out to be relatively easy!