6.3 Suspended Ceiling Design Process - Bilkent University

such formulas than suspended ceiling design does. This is
probably due to the mechanical nature of elevator design.
2. Some parameters create constraints for other parameters. In
other words, they bring limitations on the choices for other
parameters. For example, in suspended ceiling design, hanger
spacing puts limitations on maximum weight of lighting fixtures
and air diffusers that can be carried by the suspended ceiling
structure.
3. The design professionals use preferences to decide on a
parameter value when no other parameter dictates a choice.
These preferences can be measured with an ordinal scale.
Preferences with a higher value are considered more important
(e.g. lowest cost). This is often the case when decisions are
made on finishes. Parameters related to finishes are mostly not
dependent on other parameters (although they depend on each
other to ensure compatibility in design), but based on client‘s
and/or designer’s preferences.
4. When a design problem occurs, for example, if a violation of a
constraint indicates that a rework is needed, the designers use
fixes to modify the design. Each fix affects specific parameters
that are depended on the changed parameter. Parameter-based
DSM is very useful to track the parameters affected by such
changes.
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