Raised Floor In the U.S., underfloor air distribution is becoming a more common way to cool a building by using the void below the raised floor as a plenum chamber to distribute conditioned air, which has been done in Europe since the 1970s. In data centers, isolated air-conditioning zones are often
Electric Fence A fence charger places an electrical pulse from ground to the wire about once per second. The pulse is narrow and usually around 5-20 kV. Animals receive an uncomfortable but harmless shock when contacting the wire, and learn to stay away from it.
Related accidents Doors : Door safety relates to prevention of door-related accidents. Such accidents take place in various forms, and in a number of locations; ranging from car doors to garage doors. Accidents vary in severity and frequency. According to the National Safety Council in the United States, 300,000 injuries are
Raised Floor Design The USGBC (United States Green Building Council) states that 40-48% of new nonresidential construction is green. Because the flooring tiles are rarely removed once equipment has been installed, the space below them is seldom cleaned, and fluff and other debris settles, making working on cabling underneath the flooring
Pocket door : A pocket door is a sliding door that disappears, when fully open, into a compartment in the adjacent wall. Pocket doors are used for architectural effect, or when there is no room for the swing of a hinged door. They can travel on rollers suspended from an overhead
Synthetic Fence A variant, sometimes called vinyl rail or strap fencing consists of two or more vinyl-encased wires with vinyl or other synthetic between them to create a rail that is anywhere from 1 to 10 centimetres (0 to 4 in) wide. Some forms may be electrified by use of a
Glass as a flooring material is used in both residential and commercial structures. Special hollow glass blocks known as glass pavers are often used in combination with a metal frame. Glass floors are often lit from below with natural or artificial light, or may be treated as ordinary floor surfaces
Wire Fences Other than in a truly desert climate, use of rot-resistant wooden posts or steel posts is advised. In the United States, wood with natural rot resistance, such as oak and juniper, was often used until it became in short supply in the 1950s. Then, chemically treated pine and spruce
Suicide door : A suicide door is the slang term for an automobile door hinged at its rear rather than the front. Such doors were originally used on horse-drawn carriages, but are rarely found on modern vehicles, primarily because they are widely perceived as being unsafe. Popularized in the custom car trade,
Door types There are many types of door hinges. The main types include: Spring hinge a spring-loaded hinge made to provide assistance in the closing or the opening of the hinge leaves. A spring is a component of a hinge, that applies force to secure a hinge closed or keep a hinge opened. Barrel
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