Fire-Resistant Elevator Doors in Europe EN 81-58, the official European standard since 2004, has a long history. It defines the procedures for door certification, as well as their fire-resistance classification. Each country’s fire department establishes to which class of fire resistance the doors to be installed in buildings should conform. Before the European Union, each…
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Attendants of yesteryear have given way to high-tech, automated solutions. People of a certain age may remember when automobiles were started not electronically but manually, by turning a hand crank, or when telephone calls, rather than dialed, were routed through human operators, or when elevators were operated by a trained attendant. Elevator operators, usually in…
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A new method for protection against uncontrolled ascending car movement Gravity and Otis We all know that according to the law of gravity, objects tend to fall in the down direction. We also know how to calculate the speed (velocity) of falling objects, the impact force of colliding objects and other behaviors of downward-falling objects,…
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Part One of this series (ELEVATOR WORLD, April 2014) discussed the history of development of the Code of Practice for Energy Efficiency of Lift and Escalator Installations (CoP) for elevators, escalators and moving walks in Hong Kong. The CoP is now incorporated in the combined volume Code of Practice for Energy Efficiency of Building Services…
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Evacuation time is almost always shorter, and chance of survival is almost always greater, making the practice necessary. reprinted from Liftinstituut Magazine The English translation of the impressive “Background Report: Evacuation of High-Rise Buildings with Lifts and Stairs” by J. Wijnia (Peutz), J. Wit (Deerns) and R. NoordermeerDeerns is now available at website: www.liftinstituut.com/images/pdf/backgroundreport.pdf. Commissioned…
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A new elevator and the modernization of two others show that the second generation at Louisville’s Executive Elevator can get the job done, too. In late winter 2013, Executive Elevator Co. commenced work on the Silvercrest project in New Albany, Indiana. The project consisted of the installation of a three-stop hydraulic passenger elevator and the…
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An LCL filter aids the conversion of elevator feedback energy to AC for it to be safely sent back to the grid. by Wang Yanqing, Jiang Qing, Cao Jie and Wan Jianru The energy generated in the regenerative state of elevator frequency-control systems is very impressive. This energy is transmitted to the capacitor on the…
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History, risk assessment, public safety among topics covered during “extremely worthwhile” class led by Bialy. On January 16-17, following the ASME A17 code meetings in Phoenix, Louis Bialy, PE, presented an A17.7/CSA B44.7 MasterClass. The 8-hr. session began on the afternoon of the 16th and continued the next morning. In attendance were 21 elevator-industry engineers…
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Mitsubishi Electric begins Brazilian business After a long and deep analysis of the Brazilian elevator market, the Japanese company Mitsubishi Electric Corp. acquired 90% of the shares of Brazilian manufacturer LGTECH Elevadores S.A., an elevator company located in Guaíba, Brazil. As the Palácio Piratini in Porto Alegre is the seat of the state of Rio…
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Marie McDonald looks back on blazing a path for fellow women in the elevator industry. Marie McDonald entered the world in a remarkable way and has stood out ever since. She was born in Seattle, and her mother died in childbirth. At only 10 days old, she went to live with her grandparents on their…
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