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Today's, elevators are designed and built
under strict supervision of the Building Codes. Model Codes which are the
standard in most US jurisdictions require compliance with the American
Society of Mechanical Engineers' (ASME) standards for the installation,
maintenance, and inspection of elevators.
Elevators are generally sold in prepackaged components which are inherently
non-proprietary. All of the four major manufacturers sell proprietary
microprocessor controls. Each manufacturer provides similar product designs,
and the overriding issue for purchase is usually price and availability. In
the case of renovations, the use of non-proprietary controls has become a
large part of that business because it allows the owner to offer the
maintenance contract to multiple bidders rather than accept a single
manufacturer for the life of the elevator which can be more than 30 years. In some large campus type properties, the use of non-proprietary equipment
in new construction has replaced the standard prepackaged product. |
ELEVATOR
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