Books > Professional & Technical > Technology: general issues
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Discovery Miles 11 460
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Please note that the content of this book primarily consists of
articles available from Wikipedia or other free sources online. A
roof is the covering on the uppermost part of a building. A roof
protects the building and its contents from the effects of weather.
Structures that require roofs range from a letter box to a
cathedral or stadium, dwellings being the most numerous. In most
countries a roof protects primarily against rain. Depending upon
the nature of the building, the roof may also protect against heat,
against sunlight, against cold and against wind. Other types of
structure, for example, a garden conservatory, might use roofing
that protects against cold, wind and rain but admits light. A
verandah may be roofed with material that protects against sunlight
but admits the other elements. The characteristics of a roof are
dependent upon the purpose of the building that it covers, the
available roofing materials and the local traditions of
construction and wider concepts of architectural design and
practice and may also be governed by local or national legislation.
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