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However, traction elevators still require additional space above the elevator roof to accommodate the components required to raise and lower the car. Shaftless home lifts consist of a rectangular elevator cabin positioned on a rail. The lift travels on the route from the lower floor to the upper floor and back.
Holeless hydraulic elevators were developed in the 1970s, and use a pair of above-ground cylinders, which makes it practical for environmentally or cost-sensitive buildings with two, three, or four floors. Roped hydraulic elevators use both above-ground cylinders and a rope system, allowing the elevator to travel further than the piston has to ...
Schindler introduces the 330A hydraulic elevator, capable of four (4) stops with hole-less application in 2001; Schindler introduces Next Generation of Destination-Based Elevator Technology, Schindler ID® 2008; Schindler introduces the PORT in 2010 or 2011; Schindler introduces the 3300 traction elevator for low and mid-rise application
The Kone EcoSpace elevator is a machine-room-less traction elevator designed for low-rise buildings from 2 to 4 stories as an energy-efficient alternative to hydraulic elevators, and can fit in an existing hydraulic elevator hoistway. Maximum speed is 150 feet per minute (0.76 m/s). [16]
The tower is among Houston's most visible buildings as the 4th-tallest in Texas, and the 51st-tallest in the United States. The Williams Tower is the tallest building in Houston outside of Downtown Houston, [3] and is the tallest skyscraper in the United States outside of a city's central business district. It has been referred to as the ...
The Energy Corridor is a business district in Houston, Texas, located on the west side of the metropolitan area between Beltway 8 and the Grand Parkway.The district straddles a 7-mile (11 km) stretch of Interstate 10 (the Katy Freeway) from Kirkwood Road westward to Barker Cypress Road and extends south along Eldridge Parkway to Briar Forest Drive.
The economy of Houston is based primarily on the energy industry, particularly oil.However, health care, biomedical research, and aerospace also constitute large sectors. In 2021, the gross domestic product (GDP) of the Houston–The Woodlands–Sugar Land metropolitan statistical area (MSA) was 537 U.S. dollars billion, the fourth-largest of any metro area in the United States. [1]
The word traction from Latin, being the agent noun of trahere "to pull" in the sense of "drawn" [1] [2] [3] was used for the naming of traction engines developed circa 1870. [4] The first experimental electric traction motor tramway of 1875 was rapidly developed internationally for city use.