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A lean-to shelter is a simplified free-standing version of a wilderness hut with three solid walls and a single- or, in the case of an Adirondack lean-to, offset-pitched gable roof. The open side is commonly oriented away from the prevailing weather. Often it is made of rough logs or unfinished wood and used for camping.
An automated (car) parking system (APS) is a mechanical system designed to minimize the area and/or volume required for parking cars. Like a multi-story parking garage , an APS provides parking for cars on multiple levels stacked vertically to maximize the number of parking spaces while minimizing land usage.
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Enclosure. Was the removal of common rights that people held over farm lands and parish commons. [21]It was the re-allocation of scattered strips of land into large new fields that were enclosed either by hedges, walls or fences.
Steam engines promoted automation through the need to control engine speed and power.. The introduction of prime movers, or self-driven machines advanced grain mills, furnaces, boilers, and the steam engine created a new requirement for automatic control systems including temperature regulators (invented in 1624; see Cornelius Drebbel), pressure regulators (1681), float regulators (1700) and ...
Sectional garage door Up-and-over garage door Garage Door Hardware. A garage door is a large door to allow egress for a garage that opens either manually or by an electric motor (a garage door opener). Garage doors are frequently large enough to accommodate automobiles and other vehicles. The operating mechanism is usually spring-loaded or ...
Man-made closed ecological systems which were created to sustain human life include Biosphere 2, MELiSSA, and the BIOS-1, BIOS-2, and BIOS-3 projects. [ 4 ] Bottle gardens and aquarium ecospheres are partially or fully enclosed glass containers that are self-sustaining closed ecosystems that can be made or purchased.
A single concrete block, as used for construction. Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. . Concrete is the second-most-used substance in the world after water, [1] and is the most widely used building material