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The primary grid types are "Standard 1" (15 ⁄ 16-inch face), Slimline (9 ⁄ 16-inch grid), and concealed grid. In the United States and its neighboring countries, the cell size in the suspension grids is typically either 2 by 2 feet (610 mm × 610 mm) or 2 by 4 feet (610 mm × 1,220 mm), and the ceiling tiles, light fixtures, and fluorescent ...
Stripboard is the generic name for a widely used type of electronics prototyping material for circuit boards characterized by a pre-formed 0.1 inches (2.54 mm) regular (rectangular) grid of holes, with wide parallel strips of copper cladding running in one direction all the way along one side of an insulating bonded paper board.
Quadtrees are a specialised form of grid in which the resolution of the grid is varied according to the nature and complexity of the data to be fitted, across the 2-d space. Polar grids utilize the polar coordinate system, using circles of a prescribed radius that are divided into sectors of a certain angle. Coordinates are given as the radius ...
The company filed for reorganization December 6, 2000 [4] and it emerged from Chapter 11 reorganization on October 2, 2006. [5] Its stock began trading on the New York Stock Exchange October 18, 2006. The Armstrong World Industries, Inc. Asbestos Personal Injury Settlement Trust in 2006 held approximately 66% of AWI's outstanding common shares. [6]
The primary grid pattern is of quarter sections (1 ⁄ 2 mi × 1 ⁄ 2 mi (800 m × 800 m)). In U.S. land surveying under the Public Land Survey System (PLSS), a section is an area nominally one square mile (2.6 square kilometers), containing 640 acres (260 hectares), with 36 sections making up one survey township on a rectangular grid. [1]
The Armstrong Whitworth A.W.16 (or A.W.XVI) was a single-engine biplane fighter aircraft designed and built by the British aircraft manufacturer Armstrong Whitworth Aircraft. It was a single bay biplane with wings of unequal span braced with N -type interwing struts, and bore a close family resemblance to the A.W.XIV Starling Mk I, though with ...
Steel frame structure Rectangular steel frame, or "perimeter frame" of the Willis building (at right) contrasted against the diagrid frame at 30 St Mary Axe (at center), in London. Steel frame is a building technique with a " skeleton frame" of vertical steel columns and horizontal I-beams , constructed in a rectangular grid to support the ...
A hollow structural section (HSS) is a type of metal profile with a hollow cross section. The term is used predominantly in the United States, or other countries which follow US construction or engineering terminology. HSS members can be circular, square, or rectangular sections, although other shapes such as elliptical are also available.