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Shotcrete, gunite (/ ˈ ɡ ʌ n aɪ t /), or sprayed concrete is concrete or mortar conveyed through a hose and pneumatically projected at high velocity onto a surface. This construction technique was invented by Carl Akeley and first used in 1907. [1]: 7 The concrete is typically reinforced by conventional steel rods, steel mesh, or fibers.
The National Register is a federal register for buildings, structures, and sites of historic significance. This is intended to be a complete list of the properties and districts in Columbus. There are 360 properties and districts listed on the National Register in Franklin County , including 3 National Historic Landmarks .
The steelwork was encased in gunite, a sprayed dry mix concrete, the process of which was based on an invention in the United States at turn of century to spray plaster of paris in the reconstruction of skeletons of prehistoric animals. Between 1904 and 1909 this method was modified to spray sand and cement using a machine known as a Cement- Gun.
A basement wall is thus one kind of retaining wall; however, the term usually refers to a cantilever retaining wall, which is a freestanding structure without lateral support at its top. [2] These are cantilevered from a footing and rise above the grade on one side to retain a higher level grade on the opposite side.
The district is significant for its architecture, landscape architecture, and community planning. The houses are of the early 20th century, using stone, brick, and stucco. [2] The land was originally part of a large tract owned by a single family, but in 1902, 75 of those acres were sold to the Columbus Zoological Company.
Reinforced autoclaved aerated concrete (RAAC) is a lightweight form of concrete that was used in schools, colleges and other building construction from the 1950s until the mid-1990s, according to ...
Gutters and downspouts are used to catch rain water as it falls and to discharge it away from houses and buildings. When gutters are clogged or downspouts are broken, rainwater is absorbed by the soil near the foundation, increasing hydrostatic pressure. Weeping tile is a porous plastic drain pipe installed around the perimeter of the house ...
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