6.3 Suspended Ceiling Design Process - Bilkent University

7.5 Results and Discussion
The following observations were made about the elevator design
process.
Although the DSM represents the whole process, it is possible to divide
the process into two phases: planning elevators (A21 in the IDEF0
model, and the parameters between the 6 th and the 52 nd in the initial
DSM) and detail design (A22 in the IDEF0 model, and the parameters
between the 53 rd and the 78 th in the initial DSM). The former phase
includes 47 parameters except 5 system level parameters presented in
beginning of the parameter list of the initial DSM. The latter stage
contains 26 parameters (Figure 7.7)
The DSM analysis revealed considerable differences in these two
general stages. In the partitioned DSM, it was observed that the most
problematic phase of elevator design process is planning elevators
(Figure 7.8). This phase contains three overlapping loops. 28
parameters are in these loops. This means that approximately 60% of
the parameters in the planning phase are included in one or more
information cycles. However, there is no cycle in the detailed design
phase.
The “Analyze Elevator Traffic” activity creates the largest cycle, which
contains 16 parameters, in the process. The critical parameters in this
cycle are uppeak interval, contract speed, time consumed when
stopping, with gearing, floor cycle time, average passenger transfer
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