6.3 Suspended Ceiling Design Process - Bilkent University

After deciding the access and evacuation strategy, the elevator type in
terms of the method of powering the elevator is selected. The number
of floors that an elevator is intended to serve is the main parameter that
affects this decision. The amount of space that can be allocated for
machine room is another factor to be considered; since electric
elevators require machine rooms positioned at the top of the hoistway
while for hydraulic elevators, the machine room is placed next to the
hoistway at the lowest level.
The car and landing details such as size of elevator cars and car
grouping are determined according to the chosen elevator type and the
access strategy. Car size directly depends on the traffic analysis and is
decided to provide satisfactory service at peak intervals. Car grouping is
an important parameter for deciding hoistway details and as a part of
the whole circulation system in the building, it is designed by the
architect.
Deciding hoistway details involves the architect, the structural engineer,
the elevator provider, and the services engineer. Allocating adequate
space for a hoistway is an important early design consideration. If the
early scheme is not flexible enough, this may create serious conflicts at
the later phases. Other hoistway related parameters include type of
guide rails, guide rail fixing positions, and machine room and pit details.
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