6.3 Suspended Ceiling Design Process - Bilkent University

y using elevator hoistways for structural purposes. The hoistways can
serve as load-bearing supports for floors and roofs and as shear walls
for resisting lateral forces from wind and earthquakes. Thus, correct
assumptions about the hoistway dimensions are also critical from the
structural design point of view. This large cycle in the process creates
an “iteration-in-iteration” situation which has also been addressed by
the other researchers (Mascoli, 1999; Dong, 1999).
The banded DSM of elevator design process shows that while there are
18 bands in the planning stage, detailed design stage consists of only 4
bands (Figure 7.9). This suggests that early parameter decisions of
elevator design process tend to be either sequential or coupled;
however, decisions at the detailed design phase are mostly parallel.
Therefore, detailed design does not require a strict order of decisions.
Some parameters such as structural frame and landing clearances are
already available at the start of the process, since they are determined
by strict standards. Thus, they can be placed at the beginning of the
parameter decision sequence. In the partitioned matrix, they are placed
next to the related parameters in order to show where they fit in the
process (Figure 7.8).
When the initial and partitioned matrices of elevator design process are
compared, it is observed that except a few changes in the sequence of
parameters, the order of parameter decisions almost the same, while
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