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Panic Bar
A crash bar (also known as a panic exit device, panic bar, or push bar)American National Standards Institute, ANSI/BHMA A156.3-2001, American National Standard for Exit Devices is a type of door opening mechanism which allows users to open a door by pushing a bar. While originally conceived as a way to prevent crowd crushing in an emergency, crash bars are now used as the primary door opening mechanism in many commercial buildings. The device consists of a spring-loaded metal bar which is fixed horizontally to a door that swings in the direction of an exit. Depressing the bar unlatches the door, allowing occupants to quickly leave the building. Modern fire standards often mandate that doors be fitted with crash bars in commercial and other occupancies where mass evacuation may be slowed by other types of door openers. They are sometimes intended solely for emergency use and may be fitted with alarms. However, in many buildings the crash bar functions as the primary mechanism f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Set Of Crash Bar Doors
Set, The Set, SET or SETS may refer to: Science, technology, and mathematics Mathematics *Set (mathematics), a collection of elements *Category of sets, the category whose objects and morphisms are sets and total functions, respectively Electronics and computing *Set (abstract data type), a data type in computer science that is a collection of unique values ** Set (C++), a set implementation in the C++ Standard Library * Set (command), a command for setting values of environment variables in Unix and Microsoft operating-systems * Secure Electronic Transaction, a standard protocol for securing credit card transactions over insecure networks * Single-electron transistor, a device to amplify currents in nanoelectronics * Single-ended triode, a type of electronic amplifier * Set!, a programming syntax in the scheme programming language Biology and psychology * Set (psychology), a set of expectations which shapes perception or thought *Set or sett, a badger's den *Set, a small tuber ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Guardian
''The Guardian'' is a British daily newspaper. It was founded in 1821 as ''The Manchester Guardian'', and changed its name in 1959. Along with its sister papers ''The Observer'' and ''The Guardian Weekly'', ''The Guardian'' is part of the Guardian Media Group, owned by the Scott Trust. The trust was created in 1936 to "secure the financial and editorial independence of ''The Guardian'' in perpetuity and to safeguard the journalistic freedom and liberal values of ''The Guardian'' free from commercial or political interference". The trust was converted into a limited company in 2008, with a constitution written so as to maintain for ''The Guardian'' the same protections as were built into the structure of the Scott Trust by its creators. Profits are reinvested in journalism rather than distributed to owners or shareholders. It is considered a newspaper of record in the UK. The editor-in-chief Katharine Viner succeeded Alan Rusbridger in 2015. Since 2018, the paper's main news ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fire Alarm
A fire alarm system warns people when smoke, fire, carbon monoxide or other fire-related or general notification emergency, emergencies are detected. These alarms may be activated automatically from smoke detectors and heat detectors or may also be activated via manual fire alarm activation devices such as manual call points or pull stations. Alarms can be either motorized bells or wall mountable sounders or horns. They can also be speaker strobes which sound an alarm, followed by a voice evacuation message which warns people inside the building not to use the elevators. Fire alarm sounders can be set to certain frequencies and different tones including low, medium, and high, depending on the country and manufacturer of the device. Most fire alarm systems in Europe sound like a siren with alternating frequencies. Fire alarm electronic devices are known as horns in the United States and Canada and can be either continuous or set to different codes. Fire alarm warning devices can al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Failure
A power outage (also called a powercut, a power out, a power failure, a power blackout, a power loss, or a blackout) is the loss of the electrical power network supply to an end user. There are many causes of power failures in an electricity network. Examples of these causes include faults at power stations, damage to electric transmission lines, substations or other parts of the distribution system, a short circuit, cascading failure, fuse or circuit breaker operation. Power failures are particularly critical at sites where the environment and public safety are at risk. Institutions such as hospitals, sewage treatment plants, and mines will usually have backup power sources such as standby generators, which will automatically start up when electrical power is lost. Other critical systems, such as telecommunication, are also required to have emergency power. The battery room of a telephone exchange usually has arrays of lead–acid batteries for backup and also a socket f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electromagnetic Lock
An electromagnetic lock, magnetic lock, or maglock is a locking device that consists of an electromagnet and an armature plate. There are two main types of electric locking devices. Locking devices can be either "fail safe" or "fail secure". A fail-secure locking device remains locked when power is lost. Fail-safe locking devices are unlocked when de-energized. Direct pull electromagnetic locks are inherently fail-safe. Typically the electromagnet portion of the lock is attached to the door frame and a mating armature plate is attached to the door. The two components are in contact when the door is closed. When the electromagnet is energized, a current passing through the electromagnet creates a magnetic flux that causes the armature plate to attract to the electromagnet, creating a locking action. Because the mating area of the electromagnet and armature is relatively large, the force created by the magnetic flux is strong enough to keep the door locked even under stress. Typical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Strike Doors
Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Various common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of an electric charge, which can be either positive or negative, produces an electric field. The movement of electric charges is an electric current and produces a magnetic field. When a charge is placed in a location with a non-zero electric field, a force will act on it. The magnitude of this force is given by Coulomb's law. If the charge moves, the electric field would be doing work on the electric charge. Thus we can speak of electric potential at a certain point in space, which is equal to the work done by an external agent in carrying a unit of positiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hex Key
Hex keys of various sizes Socket head screws of various sizes A hex key (also, hex wrench, Allen key and Allen wrench) is a simple driver for bolts or screws that have heads with ''internal'' hexagonal recesses (sockets). Hex keys are formed from a single piece of hard hexagonal steel rod, having blunt ends that fit snugly into similarly-shaped screw sockets. The rods are bent to 90º, forming two arms of unequal length resembling an "L". The tool is usually held and twisted by its long arm, creating a relatively large torque at the tip of the short arm; it can also be held by its short arm to access screws in difficult-to-reach locations and to turn screws faster at the expense of torque. Hex keys are designated with a socket size and are manufactured with tight tolerances. As such, they are commonly sold in kits that include a variety of sizes. Key length typically increases with size, but not necessarily proportionally so. Variants on this design have the short end inse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mortise Lock
A mortise lock (also spelled mortice lock in British English) is a lock that requires a pocket—the mortise—to be cut into the edge of the door or piece of furniture into which the lock is to be fitted. In most parts of the world, mortise locks are found on older buildings constructed before the advent of bored cylindrical locks, but they have recently become more common in commercial and upmarket residential construction in the United States. The design is widely used in domestic properties of all vintages in Europe. History Mortise locks have been used as part of door hardware systems in the US since the second quarter of the eighteenth century. In these early forms, the mortise lock mechanism was combined with a pull to open the unlocked door. Eventually, pulls were replaced by knobs. Until the mid-nineteenth century, mortise locks were only used in the most formal rooms in the most expensive houses. Other rooms used box locks or rim locks; in contrast with embedded mor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pullman Latch And Keeper Diagram
Pullman may refer to: Places in the United States *Pullman, Chicago, Illinois *Pullman, Michigan *Pullman, Texas *Pullman, Washington *Pullman, West Virginia * Pullman Lake, a lake in Minnesota * Pullman neighborhood, in the city of Richmond, California Surname * Alberte Pullman (1920–2011), theoretical and quantum chemist, wife of Bernard *Alfred Pullman (1916–1954), a British soldier and airman * Bernard Pullman (1919–1996), theoretical and quantum chemist, husband of Alberte * Bill Pullman (born 1953), American actor * George Pullman (1831–1897), founder of the Pullman Company * Joe Pullman (1876–1955), Wales international rugby union player * Lewis Pullman (born 1993), American actor * Philip Pullman (born 1946), English writer * Simon Pullman (1890–1942), violinist and founder of the Warsaw Ghetto Symphony Orchestra Transport Road * Humber Pullman, a large automobile manufactured in central England between 1930 and 1954 * Mercedes-Maybach S600 Pullman Guard, Ger ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exit Door Latching Configurations
Exit(s) may refer to: Architecture and engineering * Door * Portal (architecture), an opening in the walls of a structure * Emergency exit * Overwing exit, a type of emergency exit on an airplane * Exit ramp, a feature of a road interchange Art and entertainment Comics and magazines * ''Exit'' (comics), a French comic by Bernard Werber and Alain Mounier * ''Exit'' (magazine), a British photography magazine Film * ''Exit'' (1986 film), a Canadian film directed by Robert Ménard * ''Exit'' (1996 film), an American film with a screenplay by Joe Augustyn * ''Exit'' (''Nöd ut''), a 1996 Swedish short film starring Geir Hansteen Jörgensen * ''Exit'' (2000 film), a French film directed by Olivier Megaton * ''Exit'' (2006 film), a Swedish film starring Maria Langhammer * '' Exit: una storia personale'', a 2010 Italian film by Massimiliano Amato * ''Exit'' (2011 film), an Australian-Canadian film directed by Marek Polgar * ''Exit'' (2019 film), a South Korean action disa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Building Code
The International Building Code (IBC) is a model building code developed by the International Code Council (ICC). It has been adopted for use as a base code standard by most jurisdictions in the United States. The IBC addresses both health and safety concerns for buildings based upon prescriptive and performance related requirements. The IBC is fully compatible with all other published ICC codes. The code provisions are intended to protect public health and safety while avoiding both unnecessary costs and preferential treatment of specific materials or methods of construction. However, a 2019 ''New York Times'' story revealed a secret agreement with the National Association of Home Builders that allowed the industry group, which represents the construction industry, to limit improvements in the code that would make buildings more environmentally sustainable and resistant to natural disasters, prompting a congressional investigation. The ICC, in response to a Congressional inquiry, v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Fatal Crowd Crushes
This is a list of notable crowd collapses and crushes. Many such accidents are also in the list of accidents and disasters by death toll. (The term "stampede" is often misused in popular media since it refers specifically to panicked flight from danger. Most of these events were crowd crushes, caused by poor event management.) India has had the most documented notable human stampedes and crushes with 28 individual incidents. The deadliest human crush of all time, with an estimated 10,000 deaths, was alleged to have occurred during the First Jewish–Roman War in AD 66. The deadliest modern incidents both belong to Saudi Arabia during the annual Hajj pilgrimage, with the 1990 Mecca tunnel tragedy claiming 1,426 lives and the 2015 Mina stampede claiming 2,400. Before the 18th century *In AD 80, the Roman-Jewish historian Josephus recorded that in AD 66, near the beginning of the First Jewish–Roman War, a Roman soldier mooned Jewish pilgrims at the Jewish Temple in Jerusalem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
