6.3 Suspended Ceiling Design Process - Bilkent University

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7. CASE STUDY 2: ELEVATOR DESIGN 7.1 Introduction In order to explore the research questions posed in Chapter 1 and to expand more on integration of the proposed model with existing methods, another case study was undertaken. The objective of this case study is to apply the proposed method to a building design problem which is complex in itself unlike the previous suspended ceiling design example the complexity of which results only from interactions at system level. Another objective is to demonstrate how parameter-based DSM can be integrated with Industry Foundation Classes (IFC)s as was proposed in Chapter 5. The case study presented in this chapter analyzes an elevator design process. The system architecture is first explained to familiarize the audience with elevator systems. Then, elevator design process is briefly outlined. Finally, the research process and the results are explained. Since many methodological and practical aspects of this type of research have already been discussed in Chapter 6, these are not repeated in this chapter. 7.2 Elevator System Architecture There are two general groups of elevators according to their type of drives; namely, electric traction elevators and hydraulic elevators. An electric traction elevator is a powered elevator to which energy is 153
applied by an electric driving machine. This type is used exclusively in tall buildings and in most low buildings. A hydraulic elevator is a powered elevator to which energy is applied by a liquid under pressure in a cylinder equipped with a plunger, or piston. This type is used for low-rise freight service and may be used for low-rise passenger service where low initial cost is desired. For an electric elevator, the car is raised or lowered along its guides by wire ropes controlled by the drawing machine. For a hydraulic elevator, the car is seated on the plunger, which moves up and down under the control of hydraulic pressure. The main components of an elevator system are hoistway, car, machine room and landing as shown in Figure 7.1. 154
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REPRESENTING INFORMATION FLOW IN BU
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ABSTRACT REPRESENTING INFORMATION F
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ACKNOWLEDGEMENTS Foremost, I would
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2.2.3.4 Types of Information Models
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5.3.3.1 Classification According to
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8.3 Suggestions for Further Researc
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LIST OF FIGURES Figure 1.1: A Gener
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Figure 6.13: Initial Parameter-base
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in many building projects. This is
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process modeling method for buildin
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educational approaches, studies of
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2. COLLABORATIVE DESIGN RESEARCH IN
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graphical interface to the Internet
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member are not agreed to by other m
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There is also considerable interest
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models are interdependent and they
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5. Incomplete, uncertain, and untim
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2.2.3.3 Advantages of the Informati
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process development effort is highl
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emerge at the early 1970s, moved aw
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the GDCPP. From the point of view o
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3.2.1 Network Models Network models
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interpreted as resources. The idea
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(1999) applied these concepts to a
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Input Figure 3.5: A Generic IDEF0 D
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world with an independent existence
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Figure 3.7: A Generic UML Activity
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side indicating the scheduled start
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4. DESIGN STRUCTURE MATRIX METHOD T
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need to be made. No optimal method
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aim is to move the above diagonal m
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is built, it can serve as a platfor
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4.2.1 Component-based DSM System en
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epresenting them as connections bet
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Kusiak, 1996). While the DSM can be
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since high-level processes sometime
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(a) (b) Figure 4.6: A Parameter-bas
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2. Importance ratings: A scale can
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Besides adding extra attributes to
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versions of the model a binary info
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problem without the framework model
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select a task for decomposition and
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developed such as interaction chart
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contracts. In current practice for
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completed. The former is called une
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Browning, 1998) found that addition
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A parameter-based DSM may provide i
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5.2.2 Process Integration The situa
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Figure 5.1: Two Coupled Activities
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Although representing parameter val
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5.3.1 Assumptions and Scope of the
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In order to develop the IFC specifi
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object must support a variety of AE
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Figure 5.6: Four different Views of
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countries which have a classificati
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process integration. Therefore, in
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technical terms. Furthermore, some
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the DSM and to denote the performan
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Page 123 and 124: Figure 5.12: A Workflow Proposal fo
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Page 181 and 182: Figure 7.2: The Context Diagram of
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Page 211 and 212: Karhu, V. (2001). A Model based App
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Page 215 and 216: Suh, N. P. (1998). Axiomatic Design
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A.1 Classification of Building Part
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• Time (aesthetic service life)
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B.1 Suspended Ceiling Design Parame
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Panel Acoustics NRC: Noise Reductio
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B.2 Elevator Design Parameter Defin
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Floor Area: The areas of the floors
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UpPeak Interval: The interval betwe
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C.1 A Computer Program For Building
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Figure 3. Unpartitioned Matrix The
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'fill in matrix titles For counter
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4. Open the sheet “partitioned DS
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End With For i = 1 To n Cells(i + 2
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End If Next j total_row(i) = k 'ass
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