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T-beams are similar to double tees but can be used for span ranging from 30 feet (9.1 m) to 100 feet (30 m). Joists and planks are combination of using prestressed joists with prestressed planks. Keystone-shape joists can be used for up to 36-foot (11 m) spans and tee-shape joists can be used for up to 60-foot (18 m) span.
1940 - During World War II, bitumen paint-protected iron cladding was used in the UK; 1954 - Lou Fisher observed the bitumen coating process. 1957 - The first Fisher tile was manufactured in Auckland. (The world's first steel roof tile) 1964 - 10-Pan Harvey tile was developed. 1967 - 'Improved' interlocking profile developed.
A box gutter, internal gutter, parallel gutter, or trough gutter is a rain gutter on a roof usually rectangular in shape; it may be lined with EPDM rubber, metal, asphalt, or roofing felt, and may be concealed behind a parapet or the eaves, or in a roof valley. [1] [2] Box gutters are essentially placed between parallel surfaces, as in a valley ...
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Section view through a house roof drawing showing names for parts of the structure. [clarification needed] (UK and Australia). Ctrs. means centers, a typical line to which carpenters layout framing. Domestic roof construction is the framing and roof covering which is found on most detached houses in cold and temperate climates. [1]
Metal roofs are 100% recyclable and can be made from other recycled products. Asphalt shingles are petroleum based with other chemicals making their recycling process more toxic, most shingles are not recycled and 20 billion pounds (9.1 million tonnes) are sent to landfills every year and take hundreds of years to decompose.
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Heatherwick's scheme takes the analogy of how a strip of paper can be twisted, and does the same to the slate roof finish. He uses the brick sheds as a base, and constructs the plastic form of the roof from steel tubing. [11] The result is an additional glazed space, in the roof, two storeys high that adds 20,000 square feet (1,900 m 2) of
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