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The Arnold Lava Tube System (or Arnold system) is series of lava tubes in Deschutes County, Oregon, in the United States. It is located several miles southeast of the city of Bend . The system starts in the Deschutes National Forest on the northern flank of Newberry Volcano , heads northeast onto BLM land before finally terminating on private ...
Schlotzsky's is an American franchise chain of restaurants, specializing in sandwiches and pizza. The company is headquartered in Atlanta, Georgia . Schlotzsky's has over 310 franchised and company-owned locations throughout the United States. [ 1 ]
The cavatappi shape is perhaps best described as a ridged tube extruded into a helix shape through a small number of rotations. The number of turns is commonly in the range of one to three [citation needed] (with less than one full turn, the shape degenerates into a twisted version of elbow macaroni).
Street elbows are available with bend angles of 90°, 45°, and 22.5°. They can be used in many plumbing applications, including water supply, drainage, sewers, vents, central vacuum systems, compressed air and gas lines, heating and air conditioning, sump pump drains, and other locations where plumbing fittings would be used to join sections of pipe.
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A tube can be bent in multiple directions and angles. Common simple bends consist of forming elbows, which are 90° bends, and U-bends, which are 180° bends. More complex geometries include multiple two-dimensional (2D) bends and three-dimensional (3D) bends. A 2D tube has the openings on the same plane; a 3D has openings on different planes.
Knob-and-tube wiring (sometimes abbreviated K&T) is an early standardized method of electrical wiring in buildings, in common use in North America from about 1880 to the 1930s.
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