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Roofing material is the outermost layer on the roof of a building, sometimes self-supporting, but generally supported by an underlying structure. A building's roofing material provides shelter from the natural elements. The outer layer of a roof shows great variation dependent upon availability of material, and the nature of the supporting ...
Metal roofs can last up to 100 years, with installers providing 50-year warranties. [citation needed] Because of their longevity, most metal roofs are less expensive than asphalt shingles in the long term. [10] Metal roofing can consist of a high percentage of recycled material and is 100% recyclable. [11]
In the structure of this HOF, each 4,4',4'',4'''-tetra(4,6-diamino-s-triazin-2-yl)tetraphenylmethane unit connected with eight other units by N–H···N hydrogen bonds. [3] Due to certain structural flexibility, the framework was able to uptake C 2 H 2 up to 63.2 cm 3 /g while the adsorption amount of C 2 H 4 was 8.3 cm 3 /g at 273 K, showing ...
From 1905 to 1988, The Paraffine Paint Co. of San Francisco had Malthoid as a trademark for waterproof and weatherproof building and roofing materials made of paper and felt in whole or in part. [13] However, it had become well known before that. [14] About 1913, Paraffine promoted its Malthoid roofing materials with a 16-page booklet. [15]
Roofing with large elements includes sheet metals, profiled metal or plastic trays, and corrugated fiber-cement sheets. Their waterproofing principles may involve overlapping, stapling, the application of elastomer seals, etc. Some traditional roofing materials, such as thatch or green roofs, do not fit into these two categories.
In May 1976, J-W Power Company fabricated its first compressor package, an Ariel JGM/2 compressor driven by a Witte engine rated 18 BHP at 1400 RPM, in a small shop in Longview, TX. Needing a place to test his ideas for improving gas compressor packages, Mr. Westerman constructed a larger plant in January 1978 on the outskirts of Longview, TX ...
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Roofing materials (1 C, 41 P) R. Roof gardens (1 C, 14 P) Roof structures by Vladimir Shukhov (1 C, 10 P) ... Metal roof; Mokoshi; Monitor (architecture) O. Oculus ...
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