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Chapter 16 Review CON252

Chapter 16 Review CON252 - By varying the amount of the...

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Chapter 16 Review 1. Low-slope roofs have a simpler geometry than steep roofs; they can cover buildings of any horizontal length, and can cover habitable outdoor space. They drain water relatively slowly, they are much more prone to problems with standing water. They must also utilize one-piece, impervious membranes; they are susceptible to membrane rupture. Steep roofs drain quickly; they can be roofed with shingles, which are not susceptible to the problems associated with low-slope roof membranes. Shingles are easy to install and repair, adjust easily to movement, vent water vapor and can be attractive to the eye. 2. A built-up roof membrane is created on the roof surface by overlapping layers of felt.
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Unformatted text preview: By varying the amount of the overlap, any roof can be created. A single-ply membrane is brought to the building site in the form of sheets of synthetic rubber, plastic, manufactured to the desired overall thickness; these sheets are joined at the edges with heat, a solvent, or an adhesive to form an impervious membrane. 3. Cedar shingles are cut from logs, while cedar shake is just wood chips. 4. Sheets of copper, lead, steel or stainless steel are used to create meal roofs. Lead roofs oxidize in time to a white color. Copper turns to a beautiful blue-green in clean air, and a dignified black in an industrial atmosphere: various chemical treatments can be used to obtain a certain color....
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