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Construction of the Roof Truss System

Bob explains the procedure as roof trusses are erected on the Roxbury House in Boston.
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Construction of the Roof Truss System

  computer-generated transcript - may not be 100% accurate

" Look up this is what we're talking about in terms of a roof truss system. We're in the process of putting the shingles on already -- This is a two by four truss system that went up very quickly let's watch him. On this project -- using a structurally engineered trusses them for our roof. From the architect's plans rafter segments are constructed based on the -- and a load of the roof. The pre fabricated trusses are delivered to the job site ready for installation. The crew -- each thrust onto the roof and moves it into position. These trusses are constructed from two by -- Ordinarily two by four's are too small for use as roof rafters. But the engineered construction of each truss allows the use of smaller dimensional lumber in this application. Each -- attack that took place do you create and maintain the then these engineered metal braces are placed between the trust this time the try to system together. These joint plate as a private trust pieces in place and are the key thing that system. The trust their temporarily held in place with bracing until the sheathing is applied to the roof. Assembling the roof structure with this system is very fast and a -- about half a dozen workers can raise the truss system and -- the roof with plywood. In a single day. Well once we got all the plywood sheeting and place we're ready to bring the shingle crew aboard and as you can see they've got a good start on the job."

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