Friday, December 18, 2009

Hoisting the rafters

This was the fastest part. The rafter pre-assembly meant they could do this in an hour. The preassembled trusses were stacked beside the house and Francois was responsible for attaching the crane straps to the assembly and sending it up to the crew working on the house. The crew nails it down to the rafter plate temporarily and later drill holes into the rafters and pounds in pegs to hold them in place permanently.

Note that every other rafter is held together by a collar tie; the others are held together by a temporary tie used to keep the trusses together while they are being hoisted. We like the collar ties a lot. They not only strengthen the roof assembly, but the will make the upstairs loft more cozy, bringing down the ceiling a little. Lats (2 x 1) hold together the rafter assembly temporarily. They are nailed to the outside of the rafters, as the outside of the rafters face outward and will not be visible once the roof is on.

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