No elevators are not building materials. they are a system that is fabricated elsewhere and installed in a building.
Becasue they ELEVATE you to different stories in a building! i hope that helps. :P
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stairs
elevators
The north, and the south tower had 99 elevators each.
elevators.
The invention of steel skeletons and elevators made building skyscrapers possible
6500 windows, 73 elevators in the Empire State Building
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Elevators transport people from one floor of a building to another.
Elevators, the choice of each individual to have a comfortable movement between the floors of any building without going through the difficulty of climbing the stairs. Thus, the installation of elevators in any building has reached a great boom and almost all buildings today are built with the characteristic of elevators. Elite Elevators are one of best home elevators company in India. We are providing home lifts, Residential Lifts, Domestic Lifts, Hydraulic Lifts for all type of homes.
STEEL! Elevators Telephones Efficient pumps