Download - Construction Virtual Prototyping- Ho

THE HONG KONG POLYTECHNIC UNIVERSITY

DEPARTEMENT OF BUILDING ESTATE

BSc (Hons) in Building Engineering and

Management

BRE 488 Dissertation

Construction Virtual Prototyping –

Case Study of Ho Tung Lau Development

Author: CHAN KANG YUEN (03510381D)

Year of submission: 2006

Construction Virtual Prototyping – Case Study of Ho Tung Lau Development DECLARTAION

i

DECLARTAION

I declare that this dissertation, entitled Construction Virtual Prototyping –

Case Study of Ho Tung Lau Development represents my own work, expect

where due acknowledgement is made, and that it has not been previously

included in a thesis, dissertation or report submitted to this University or other

institution for a degree, diploma or other qualification.

________________

CHAN KANG YUEN

Construction Virtual Prototyping – Case Study of Ho Tung Lau Development ACKNOWLEDGEMENT

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Acknowledgement

I would like to express my gratitude to everyone who has offered me valuable

information and advice in this dissertation.

First, I would like to take this opportunity to express my sincere thanks to my

supervisor, Prof. Heng Li, Professor at the Department of Building and Real

Estate in the Hong Kong Polytechnic University, for his advice and guidance.

I would like to devote my special thanks to Mr. Stephen Kong, Mr. Michael

Chan and Mr Ting Huang, the Project Associate, the Research Assistant and

PhD Candidate respectively who teach the application of CATIA V5 in

Department of Building and Real Estate in The Hong Kong Polytechnic

University, provide precious opportunities for me to participate in various

virtual prototyping projects and share their valuable experiences.

Besides, I would like to thank Mr. Shu Xian Wang, the project manager at the

China State Construction Engrg. (Hong Kong) Ltd., who attend my interviews

in this construction virtual prototyping project with his tight schedule.

At last, I would also like to express my thanks to my family members and

friends for their generous support and efforts.

Construction Virtual Prototyping – Case Study of Ho Tung Lau Development ABSTRACT

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Abstract

Construction Information Technology (IT) is a hot and new topic in local

construction industry in recent years as Information Technology makes a great

impact on construction industry all over the world, specially Virtual

Prototyping.

Virtual Prototyping can provide a capacity to “construct in the computer”.

After the information is input, it creates a three-dimensional model and

simulation environment that is capable to simulate the production, fabrication

and assembly of construction components, including the associated operational

processes in the computer.

The case study of Virtual Prototyping comes from The China State

Construction Engrg. (Hong Kong), Foundations and Railway Depot Works for

Ho Tung Lau (Site A) Development project. The CATIA system is applied in

this project as it equips the functions of 3D model and simulation process to

allow the team to have a whole picture of the work.

Construction Virtual Prototyping – Case Study of Ho Tung Lau Development TABLE OF CONTENT

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Table of content

DECLARTAION ......................................................................................... i

Acknowledgement .................................................................................. ii

Abstract .................................................................................................. iii

Table of content ..................................................................................... iv

List of Figures .......................................................................................viii

List of Tables ......................................................................................... xii

CHATPER 1 - Introduction......................................................................2

1.1 Introduction......................................................................2

1.2 Problem Statement ............................................................2

1.3 Research Objective ...........................................................3

1.4 Research Methodology .....................................................4

1.4.1 Literature review ..............................................................4

1.4.2 Use of CATIA V5 Mechanical Design..............................4

1.4.3 Use of DEMLIA V5............................................................4

1.4.4 Interview ...........................................................................5

1.5 Dissertation Organization ...............................................6

CHATPER 2 - Literature Review .............................................................8

2.1 Information Technology (IT) .............................................8

2.2 Construction and Computers .........................................10

2.3 Overview of Construction Applications......................... 11

2.4 Computer Aided Design..................................................14

2.5 Virtual Prototyping ..........................................................14

2.6 The Background of CATIA ..............................................15

2.6.1 Boeing 777 .....................................................................15

Construction Virtual Prototyping – Case Study of Ho Tung Lau Development LIST OF CONTENT

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2.6.2 Walt Disney Concert Hall ..............................................16

CHATPER 3 - CATIA V5 Environment ..................................................18

3.1 Introduction......................................................................18

3.2 Workbench .......................................................................18

3.2.1 Product Structure ...................................................18

3.2.2 Part Design ............................................................18

3.2.3 Assembly Design ..................................................19

3.2.4 Sketcher .................................................................19

3.3 CATIA V5 Document Types .............................................19

3.4 The CATIA V5 Standard Screen Layout .........................20

3.4.1 Start Menu ......................................................................20

3.4.2 The Standard Windows Tool bar ..................................21

3.4.3 The Specification Tree...................................................26

3.4.4 Plane representation .....................................................27

3.4.5 3D Compass ...................................................................27

3.4.6 Current Workbench .......................................................27

3.4.7 The Tools Toolbars ........................................................27

3.4.8 Power Input Mode..........................................................27

3.4.9 Mouse Control (Viewing tools) .....................................28

3.5 Conclusion .......................................................................28

CHATPER 4 - Case Study of Ho Tung Lau Development ...................30

4.1 Introduction......................................................................30

4.2 The background information of the site ......................30

4.3 The location of the site..................................................31


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4.4 Using CATIA system on this project ............................32

4.5 The production of the site layout .................................33

4.6 The production of 3D Virtual Resources .....................42

4.6.1 Gantry .............................................................................42

4.6.2 LTM1500 mobile crane ..................................................44

4.7 The production of the part elements ............................47

4.7.1 The sample of creating the Column (Assembly File)

51

4.7.2 Ho Tung Laul Model .................................................76

4.8 The production of the process simulation ..................77

4.8.1 Creating process simulation.........................................78

4.8.2 Editing process simulation ...........................................83

4.8.3 Viewing a Simulation .....................................................85

4.9 Conclusion .......................................................................86

CHAPTER 5 - Analysis using virtual prototyping on Ho Tung Lau

Development .........................................................................................94

5.1 Benefits of using virtual prototyping in the building

industry 94

5.1.1 Identification of possible planning error .....................94

5.1.2 Evaluation of innovative construction method in a

virtually real environment ......................................................94

5.1.3 Identification of idle time and resources .....................95

5.1.4 Good communication between project staff from top

management to worker level .................................................95

5.1.5 Better understanding on the design ............................95


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5.2 Limitation of using virtual prototyping in the building

industry 96

5.2.1 High hardware configuration ........................................96

5.2.2 High price and license Fee............................................96

5.2.3 High training cost and labour cost...............................97

CHAPTER 6 - Conclusion .....................................................................99

6.1 Conclusion .....................................................................99

6.2 Recommendation...........................................................99

Reference ............................................................................................102

Bibliography ........................................................................................103

Appendix .............................................................................................105

Appendix I Interview Letter................................................106

Appendix II Interview Question ..........................................107

Construction Virtual Prototyping – Case Study of Ho Tung Lau Development LIST OF FIGURES

viii

List of Figures

Figure Title Page

No.

Figure 2.1 Boeing’s 777 airliner digital model by CATIA 16

Figure 2.2 Walt Disney Concert Hall in Los Angeles 16

Figure 3.1 CATIAV5 Standard Screen 20

Figure 3.2 Start Menu 21

Figure 3.3 File menu options 22

Figure 3.4 Edit menu options 22

Figure 3.5 View menu option 23

Figure 3.6 Insert menu options 24

Figure 3.7 Tools menu option 25

Figure 3.8 Window menu option 26

Figure 3.9 Help menu option 26

Figure 4.1 The map of the site 1 31

Figure 4.2 The map of the site 2 31

Figure 4.3 Master Layout 35

Figure 4.4 Site Layout 35

Figure 4.5 Road & Building Layout 35

Figure 4.6 Rail Layout 36

Figure 4.7 Existing Pad 36

Figure 4.8 Railway 37

Figure 4.9 Tai Po Road Layout 37

Figure 4.10 Beam and Girder Layout 38

Figure 4.11 Minipiles Layout 39


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Figure 4.12 Wall Layout 39

Figure 4.13 Tracks 39

Figure 4.14 Concrete Platform Layout 40

Figure 4.15 Ground Layout 40

Figure 4.16 Train and Podium 41

Figure 4.17 Gantry machine 42

Figure 4.18 Detail of gantry machine 43

Figure 4.19 Control of gantry 43

Figure 4.20 LTM1500 mobile crane 44

Figure 4.21 The detail of LTM1500 mobile crane 45

Figure 4.22 Control of LTM1500 mobile crane 46

Figure 4.23 The typical sample of columns which is Structural Steel

Column SC33A 49

Figure 4.24 The inside view of columns 50

Figure 4.25 The wireframe view of columns 50

Figure 4.26 Part Design Workench 52

Figure 4.27 Contextual Menu 53

Figure 4.28 Properties 53

Figure 4.29 Using Profile tool 54

Figure 4.30 Using Rectangle tool 54

Figure 4.31 Using Constraint 54

Figure 4.32 Constraint Definition 54

Figure 4.33 After editing on constraint 55

Figure 4.35 “Structural Steel Column SC53A Steel” 56

Figure 4.36 “Structural Steel Column SC53A Grout” 56


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Figure 4.37 “Steel Column Top Plate TP53A” 57

Figure 4.38 “Steel Column Base Plate BP53A” 57

Figure 4.39 Proporties 58

Figure 4.40 “Steel Column Base Plate BP53A” 60

Figure 4.41 Inserted all components all one product 60

Figure 4.42 Dragged element 62

Figure 4.43 Dragged all elements 62

Figure 4.44 Snapped element 1 63

Figure 4.45 Snapedp element 2 63

Figure 4.46 Inserted the element 64

Figure 4.47 Finished the insert 64

Figure 4.48 Open “Column Layout” 66

Figure 4.49 Placed One Structural Steel Column 66

Figure 4.50 Placed All Structural Steel Columns 67

Figure 4.51 Save as CGR 69

Figure 4.52 Replace Component 69

Figure 4.53 Macros 71

Figure 4.54 Create a new macro 71

Figure 4.55 Marco Editor 1 71

Figure 4.56 Marco Editor 2 71

Figure 4.57 Ho Tung Lau Model 76

Figure 4.58 Ho Tung Lau Model in DELMIA 77

Figure 4.59 Activity Creation Options 79

Figure 4.60 Jog window 79

Figure 4.61 Delay Window 80


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Figure 4.62 Edit Visibility Operation 1 81

Figure 4.63 Edit Visibility Operation 2 81

Figure 4.64 The tree of the simulation activities 82

Figure 4.65 PERT Chart 83

Figure 4.66 Gantt chart 84

Figure 4.67 Ho Tung Lau Model in DELMIA 86

Figure 4.68 Process Simulation 1 87












Construction Virtual Prototyping – Case Study of Ho Tung Lau Development LIST OF TABLES

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List of Tables

Table Title Page

No.

Table 3.1 Document Type 19

Table 3.2 Table of mouse control 28

Table 4.1 Table of background information of site 30

Table 4.2 Table of Command in Gantry 43

Table 4.3 Table of Command in LTM1500 mobile crane 46

Table 4.4 The structure of all CATIA file in Ho Tung Tau Model 49

Table 5.1 Software price list 97

CHAPTER 1

INTRODUCTION

1.1 Introduction

1.2 Problem Statement

1.3 Research Objective

1.4 Research Methodology

1.5 Dissertation Organization

Construction Virtual Prototyping – Case Study of Ho Tung Lau Development CHATPER 1

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CHATPER 1 - Introduction

1.1 Introduction

Nowadays, Construction IT is a hot and new topic in construction industry in

recently years in Hong Kong as Information Technology has made a great

impact on construction industry, specially Virtual Prototyping. It is one of the

computer system which is newly applied in local industry.

1.2 Problem Statement

As the development of the computer, the construction virtual prototyping is

become more important. The construction virtual prototyping is an essential

ingredient in the conceptualization and realization of a design. Virtual Object and

the simulation have now shown as an intermediary between architects, engineers

and clients.

At present, most of building construction drawings is drawn by Computer Aided

Design (CAD) for example, AutoCAD, Mircostation. Although CAD is a very

powerful software to illustrate the details of layout of building construction, it is

not user-friendly. It is found that some of construction workers still confuse with

drawing and misunderstand during the construction process. Besides, some of

undergraduate students also find difficulties in applying this software. Because of

these, it might be concluded that AutoCAD and Mircostation are insufficient to

assist in the process of building construction. Therefore, a better CAD is need for

construction industry.


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1.3 Research Objective

The CAD technology is very useful for building construction as it allows design

work to be more efficient and effective to share ideas with others. The French

programmer developed a user-friendly and powerful drawing which is CATIA.

Virtual prototyping (CATIA) will be applied in 3-D building design and

simulation process. In order to illustrate the application of the software, a

building would be constructed as a 3D model and the construction process of the

building such as the process of the column construction, beam construction, etc

will be simulated.

The objectives of this research are as follows:

1. To outline benefits and limitations of the application of Information

technology in local construction industry specially in Computer Aided

Design and Visualization

2. To study on the function of CATIA V5 system

3. To study on the model design and simulation process through case study on

Ho Tung Lau Development project at the Construction Virtual Prototyping

Laboratory in The Hon Kong Polytechnic University

4. To find out the benefits and drawbacks of applying CATIA V5 to the local

construction industry


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1.4 Research Methodology

According to the problem statement of the research, the dissertation is based on

data collection from two parts, namely literature review and desk study by

CATIA V5 and DELMIA V5 on Ho Tung Lau Development project.

1.4.1 Literature review

The literature review of the dissertation is obtained from professional

journals, articles, books and internet which is related to the IT construction

specially Computer Aided Design.

1.4.2 Use of CATIA V5 Mechanical Design

CATIA V5 (Computer-Aided Three-dimensional Interactive Applications

Verson 5) is a mechanical design which provides a special tool to illustrate

the generation of production drawings and three-dimensional part. It can

provide integrated real-time rendering capabilities and support different

types of drawing formats. Therefore, CATIA Mechanical Design‘s tools

provide advanced three-dimensional oriented productivity features, such as

advanced specification graph display.

1.4.3 Use of DEMLIA V5

DELMIA V5 (Digital Enterprise Lean Manufacturing Intergrated

Application Version 5) is a brand for digital manufacturing and simulation

solutions from Dassault Systemes. It provides entire digital solutions for

manufacturing process such as aircraft manufacture, car manufacture and

building construction.


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DELMIA has three main functions such as Process Planning, Process and

Resource Plan Definaiton and Resource Modelling and simulation.

Process Planning provides a obvious overview of the working

sequences and links which is related to time and resources.

Process and Resource Plan Definaiton provide tools to verfiy or

redefine 3D process.

Resource Modelling and simulation provide tools to model and

simulate the building and buidling process by using robotic work.

1.4.4 Interview

In the interview, Mr. Wang the project manager of the China State

Construction Engrg. (Hong Kong) Ltd shared his ideas and experiences on

construction virtual prototyping project on Foundations and Railway Depot

Works for Ho Tung Lau Development.

.


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1.5 Dissertation Organization

Chapter 1 identify the problem statement of this dissertation. Research

objectives and reseach methodology of this dissertation are also

included in this Chapter.

Chapter 2 reviews the literature of the IT construction specially Computer

Aided Design and the history of CATIA

Chapter 3 describes the CATIA V5 environment

Chapter 4 demonstrates desk study on Foundaitons and Railway Depot

Works for Ho Tung Lau Development project by CATIA V5 and

DELMIA V5

Chapter 5 analyses and discusses the application of CATIA V5 on

construction industry

Chapter 6 concludes this dissertation and recommends for further research

CHAPTER 2

Literature Review

2.1 Information Technology

2.2 Construction and Computers

2.3 Overview of Construction

Applications

2.4 Computer Aided Design

2.5 Virtual Prototyping

2.6 The Background of CATIA


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CHATPER 2 - Literature Review

2.1 Information Technology (IT)

Information Technology is the applications of a wide variety of electronic

technologies on the information-handling activities. It is an integration of computing

technology and information processing which builds up new systems and products to

assist people to work, to learn as well as live.

Information Technology (IT) is defined as “The use of electronic machines and

progames for the programs for the processing, storage, transfer and presentation of

information. IT encompasses many technologies such as computers, software,

networks and even telephones and fax machines.” Bjork, (1999)

Lucas (2000) defined IT as all form of technology applied to processing, storing and

transmitting information in electronic form.

Besides, according to Laudon, Kenneth C (1995) claims that IT can be grouped into

four categories: Sensing, Communication, Analyzing and Display.

Sensing Technologies

Devices assist to gather data (raw unprocessed facts) from the environment and

translate them into a form that can be understood by a computer fall within the

category of sensing technologies.

Communication Technologies

Technologies which tie together and transmit information between sensing,


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analyzing, and display technologies are communication technologies.

Analyzing Technologies

Computer hardware (a physical equipment) and software (programs or

instructions that tell the computer what to do) come with the category of

analyzing technologies. Computers take in the data from sensing and

communicating devices and then store and process the data, transform them into

useful information.

Display Technologies

Devices and related software that make processed data available to human users,

either through sight or sound, make up our last category of information

technologies. Display technologies from the interface, or connection, between

sensing, communicating, and analyzing technologies and the human user.


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2.2 Construction and Computers

Since the rapidly developed computer is launched, some programmers have started to

develop software for construction industry such as Computer Aided Deign to assist

the complex drawing.

A Graphical User Interface feature, together with those fairly large and expensive

computers, formed the prime platform on which the idea of Computer Aided Design

(CAD) was invented (Li 1995).

From Laudon, Kenneth C (1995) explained the relationship between construction and

computers. “The construction process usually results in a unique product, a specific

building for a specific context of site conditions and client requirements. On one hand,

this requires a detailed evaluation and appraisal of building performance during the

design stages where IT applications can be of great help. On the other hand, design

consultants are reluctant to invest in learning the skills required for IT systems and

collecting data for operating the systems, when the benefits are perceived as limited.”


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2.3 Overview of Construction Applications

IT applications are used for a wide range of construction industry such as initial

design, estimating and job costing, through to detailed design and project

management.

According to Ming Sun and Rob Howard (2004) claims that construction applications

can be categorized into six parts:

Business and Information Management

The construction process is an information intensive one which a huge amount of

information is generated and consumed and all the professionals involved. The

common type of information includes site survey, cost analysis. design drawings,

specifications, regulations, bill of quantities, project planning, job costing and

estimates, etc. The information is presented in a range of paper drawings,

documents, correspondence, fax, computer files or e-mails. An Electronic

Document Management (EDM) system, such as TDOC or OpenDoc, can create

an environment which links disparate forms of information together, in the

context of a project or organization, to achieve easy access and control.

Computer Aided Design and Visualization

Computer Aided Design (CAD) software is widely adopted by design

professionals. The initial drawing alone does not show the clear advantages of

CAD, since experienced designers can draw on the drawing board equally fast.

The real strength of CAD lies on its ability to allow ‘editing’. Once a graphic is

drawn, functions such as delete, move, copy, rotate, scale, mirror, etc., can be

applied. AutoCAD has the largest share of the CAD market. Other popular CAD


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packages include Microstation, ArchiCAD, MiniCAD, FastCAD, etc.

Building Engineering Applications

Clients of construction industry have ever-higher expectations. They want their

buildings to look good visually, to be safe structurally, to provide comfortable

living environments to their occupants, and to consume less energy in operations,

etc. The ever more complex demands on the buildings design process have urged

to the need to a new approach to building engineering design based on computer

software. For example, CADLink from Cymap and the HEVACOMP package

both offer a comprehensive range of software options for energy, lighting, and

building services design.

Computer Aided Cost Estimating

Controlling costs is one of the most important missions in a construction project.

To achieve the control, contractors and sub-contractors must first carry out an

accurate cost estimation and establish budget. Rigorous project accounting must

then be employed to ensure the actual expenditure will not exceed its budget.

Project managers or estimators may also use different methods to prepare the

cost estimation for construction projects. At present, there are sophisticated

computer software packages such as Esti-Mate, Manifest and FBS-Estimator.

Planning, Scheduling, Site Management

Construction work requires careful planning and skillful management for human

and physical resources. Computer systems can assist on –site managers to plan

ahead, evaluate different options, adopt and execute the most efficient


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construction operations. Apart from a widely application of planning packages

such as Microsoft Project, Primavera, Power Project, etc., to program and

schedule the detailed construction activities, some applications, like JobMaster

and ICON are also adopted.

Computer Aided Facilities Management

Facilities Management (FM) is a relatively new discipline that emerged in the

early 1980s. It gets a wide recognition of the importance of the building

operation and maintenance and their impacts on the life cycle cost of a building.

The software available for facility management has been developed from a

combination of CAD and database management systems.


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2.4 Computer Aided Design

Computer Aided Design such as AutoCAD and MicroStation is widely utilized in the

construction industry as it can create and demonstrate an imaginary building to satisfy

the needs of clients. Clients and designers need to share the ideas while using virtual

prototyping CAD.

According to G. Aound, A. Lee and S. Wu (2005), Computer Aided Design is an

essential tool of the production of drawings in construction industry. The upstream

CAD data mainly remains in the form of 2D geometry data, compiled by

entity –based CAD software such as AutoCAD and MicroStation.

According to Ming Sun and Rob Howard (2004), there is a great need of the

advancement of more powerful computer workstations as users are now demanding

methods to view these 3D models as shaded, photo-realistic images. Visualization is

the production of such images using computer systems.

2.5 Virtual Prototyping

Virtual Prototyping provides a large capacity to “construct in the computer”. It can

provide a creating 3D model and simulation environment that allows the production,

fabrication and assembly of construction components, including the associated project

operational processes, to be simulated in computer and demonstrated to the users.

CATIA V5 is one of the Virtual Prototyping application.


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2.6 The Background of CATIA

CATIA (Computer-Aided Three-dimensional Interactive Applications) is the Product

Life Cycle Management / Computer-Aided-design / computer aided manufacturing /

computer aided engineering (PLM/ CAD/CAM/CAE) commercial software suite for

digital product definition and simulation developed by Dassault Systemes. In 1981,

Dassault Systemes formed a strategic partnership with IBM to distribute the

development of CATIA all over the world. As CATIA is a powerful tool for drawing,

it has a built-in capacity to capture and reuse the implementation of the design

practices. Nowadays, CATIA becomes one of the popular product development

system in the world as it is widely used in the digital mockup process.

2.6.1 Boeing 777

Boeing Commercial Airplanes has used CATIA V4 to develop and create the

Boeing 777, which is the first airplane to be 100 percentage digitally designed

and preassembled on computer. According to the virtual prototyping, Boeing 777

Airplane Group won the top award in the Manufacturing category of the 1995

Computerworld Smithsonian Awards program. Afterwards, the Boeing 787 or

Dreamliner series aircraft also adopt the system of CATIA V5 in their

construction.


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Figure 2.1 Boeing’s 777 airliner digital model by CATIA

(Source: Boeing Commercial Airplane Group)

2.6.2 Walt Disney Concert Hall

Disney Concert Hall is very complex. It has many curve structure which can be

drawn and demonstrated by CATIA. Besides, CATIA can make precise

documentation. The CATIA mechanical design system has revolutionized what

had primarily been an engineering application. (James Steele, 2002).

Figure 2.2 Walt Disney Concert Hall in Los Angeles

(Source: http://www.gehrytechnologies.com/)


CHAPTER 3

CATIA V5 Environment

3.1 Introduction

3.2 Workbench

3.3 CATIA V5 Document Types

3.4 Overview of Construction

Applications

3.5 The Specification Tree

3.6 Conclusion


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CHATPER 3 - CATIA V5 Environment

3.1 Introduction

This Chapter is intended to introduce to the CATIA V5 environment.

3.2 Workbench

In CATIA V5, workbench is a characteristic feature. Workbench means a working

environment which allows users with unique functionality to create and manipulate

geometry.

3.2.1 Product Structure

The performance of this CATIA V5 is a product structure. In this program, the

structure of product is organized as a logical structure comprising a large number

of assemblies, sub-assemblies and parts. For example, assemblies consist of

levels of building, sub-assemblies consist of each room and parts consist of

reinforcement and wall in a building. Numerous tools are similar or duplicates of

tools found in the Assembly Design Workbench.

3.2.2 Part Design

This workbench allows the design of precise 3D mechanical parts with an

intuitive and flexible user interface. It is core mechanical solid modeling

capability.


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3.2.3 Assembly Design

This workbench allows the design of assemblies with an intuitive and flexible

user interface. Also, it can be cooperatively applied with other current

companion products such as Part Design.

3.2.4 Sketcher

This workbench allows the design of sketch precise and rapid 2D profiles. Also,

it is tied closely to Part Design workbench.

3.3 CATIA V5 Document Types

Different CATIA V5 workbenches generate different types of document files.

Table 3.1 Document Type (Source: Kang Yuen Chan,2006)

Document Types WorkBench

Sketcher

Part Design

.CATPart

Product Structure

.CATProduct Assembly Design

Process and Resource Definition CATProcess

Workcell Squencing


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3.4 The CATIA V5 Standard Screen Layout

This section describes the main components of the CATIA V5 user inferface. The

following standard screen layout shows you where different tools bars and icons.

Figure 3.1 CATIAV5 Standard Screen (Source: Kang Yuen Chan,2006)

3.4.1 Start Menu

The Start menu bar is the main menu for opening the different environments. You

can access to various CATIA V5 workbenches and product portfolios. The option

of the workbenches depends on the license’s configuration. The Start menu will

keep track of the last models used in session in order to provide quick retrieval.

3.4.1 3.4.2

3.4.5 3.4.3

3.4.4

3.4.7

3.4.8


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Figure 3.2 Start Menu

(Source: Kang Yuen Chan,2006)

3.4.2 The Standard Windows Tool bar

The Standard Windows tool bar is consistent with the Microsoft Windows

environment. There are different CATIA V5 tools found in the different pull

down menus. There are various shortcuts into the user inferface.

File Menu

This Menu is similar to the most MS Windows applications. Opening and closing

documents are the primary functions of this section.


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Edit Menu

This Menu is similar to the most MS Windows applications. There are common

functions such as cut, copy and paste. Also this menu allows for the manipulation

of objects within the CATIA V5 environment.

Figure 3.4 Edit menu options (Source: Kang Yuen Chan,2006)

Figure 3.3 File menu options (Source: Kang Yuen Chan,2006)


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View Menu

This Menu provides a many of the tools that can be accessed from bottom

toolbar, quick keys and contextually for different model geometry. Toolbar

menus allows user to toggle on and off within this menu option for

customizing the user environment.

Figure 3.5 View menu option (Source: Kang Yuen Chan,2006)


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Insert

This Menu provides the creation, manipulation and insertion of geometry

elements with the object. Most of the Insert tools are alternative tools which are

depending on the active workbench.

Figure 3.6 Insert menu options



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Tools

This Menu provides utilities for customizing the user environment, capturing

images, macro application for Visual Basic Language, and quickly showing or

hiding common geometry element types.

Figure 3.7 Tools menu option (Source: Kang Yuen Chan,2006)


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Windows

This Menu is similar to the most MS Windows applications. The first section can

display the different documents to be vertically, horizontally, or in cascading

fashion. It is useful for user to coordinate the display. The bottom section shows

how many documents are open.

Help

The Help menu provides access to CATIA V5 Complete Content, Index and

search screen as well as find out License and Release information.

Figure 3.8 Window menu option Figure 3.9 Help menu option (Source: Kang Yuen Chan,2006) (Source: Kang Yuen Chan,2006)

3.4.3 The Specification Tree

CATIA V5 provides a particular history of tools and processes, which captures and

reuses process specification in order to accelerate the design process. You can click

the – and + sign located on each branch to expand and contract the specification tree.

Also, you can Zoom In, Zoom Out and Pan the Specification Tree the same way you

would a part.


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3.4.4 Plane representation

XY, YZ and ZX planes are represented in the workspace and Specification Tree. If

you select any one plane from Specification Tree, you will highlight its plane for

using.

3.4.5 3D Compass

Viewpoint representations which are used to capture viewpoints can be manipulated

by using compass. The object can be manipulated by dragging and dropping the

compass on a surface of object. Non-constrained objects can also be manipulated by

using compass. However, groups of objects in assemblies which are linked to each

other by constraints can be manipulated.

3.4.6 Current Workbench

This icon displays the active workbench. In different workbenchs such as part design,

assembly design and Sketcher, different tool bars and tools can be provided to use.

3.4.7 The Tools Toolbars

The toolbar changes depending on which workbench you are in.

3.4.8 Power Input Mode

Its mode is for advanced user. It allows user to directly enter commands or queries.


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3.4.9 Mouse Control (Viewing tools)

Control the mouse Function

Click the middle mouse button Center the display at a specific location

Press and hold down the middle mouse button

and then drag

Pan the view

Press and hold down both the middle mouse

button and the left (or right) mouse button and

then drag

Rotate the view

Press and hold down the middle mouse

button, then click the left (or right) mouse

button once and drag

Zoom In or Out

Table 3.2 Table of mouse control (Source: Kang Yuen Chan,2006)

3.5 Conclusion

This Chapter has introduced to the CATIA V5 environment and basic function of

CATIA V5.

CHAPTER 4

Case Study of Ho Tung Lau Development

4.1 Introduction

4.2 The background information of

the site

4.3 The location of the site

4.4 Using CATIA system on this

project

4.5 The production of the site

layout

4.6 The production of 3D Virtual

Resources

4.7 The production of the part

elements

4.8 The production of process

simulation

4.9 Conclusio

Construction Virtual Prototyping – Case Study of Ho Tung Lau Development CHAPTER 4

30

CHATPER 4 - Case Study of Ho Tung Lau

Development

4.1 Introduction

The China State Construction Engrg. (Hong Kong) Ltd. has invited Professor

Heng Li, Department of Building & Real Estate of The Hong Kong

Polytechnic University to draw the 3D drawing and make the simulation in the

construction process of one of their project, Foundations and Railway Depot

Works for Ho Tung Lau (Site A) Development.

4.2 The background information of the site

Information

Address of Site Ho Tung Lau (Site A) Fo Tan East of Fo Tan

Station Area bounded by Tai Po Road Shatin,

Lok King Street, Jubilee Garden & Nullah

Shatin Town Lot No 470

GFA Domestic --

GFA Non-Domestic 2073.5

Authorized Person Ronald Lu

Registered Structural Engineer Kwan Kin Kei

Applicant Full Fair Ltd

Project Period 2004.04-2007.05

Table 4.1 Table of background information of sitel (Source: Kang Yuen Chan,2006)


31

4.3 The location of the site

The red colour area is the location of the site

Figure 4.1 The map of the site 1

(Source: http://www.centamap.com)

Figure 4.2 The map of the site 2

(Source: http://www.centamap.com)


32

4.4 Using CATIA system on this project

The CATIA system is applied in this project as it is capable to draw a whole

picture to meet the requirements of different parties. Its application can be

divided into three parts. They are as follows.

First, it is the production of 3D models. Site environment (Site environment

(including site layout, on site buildings, surrounding buildings, roads inside and

surrounding the site), precast beams and slabs (including concrete and

reinforcement), temporary supports (including formworks, scaffoldings, struts

and working platforms) and in- situ concrete elements (including concrete and

reinforcement).are drawn.

Second, the production of 3D Virtual Resources is LTM1500 mobile crane (3D

models production, setting of speeds and loading capacity properties) and

Workers of all types of trade (3D models production and setting of

productivities).

At last, the process simulation sets up site environment, events sequence and

duration, and resources usage, as well as builds up virtual processes in 3D

environment (including plants movement, workers movement, erection of precast

elements, visualization of temporary support works and concreting works) and

produces PERT chart, program Gantt chart and resources Gantt chart.

There are four main processes to produce this project

1. the production of the site layout

2. the production of the part elements


33

3. the production of 3D Virtual Resources

4. the production of process simulation

4.5 The production of the site layout

Site layout is an essential element of drawing 3D models as it points out the

exactly location of the models. For this development, as the site consists of Fo

Tan Station and its surrounding buildings, its site layout will be more complex.

Master Layout (Fig.4.3) Plan includes

1. Site Layout (Site Layout.CATPart) (Fig.4.4)

2. Road & Building Layout (Road & Bldg Layout.CATPart) (Fig.4.5)

3. Rail Layout (Rail Layout.CATPart) (Fig.4.6)

4. Existing Pad (Existing Pad.CATPart) (Fig.4.7)

5. Railway (Railway.CATPart) (Fig.4.8)

6. Tai Po Road Layout (Tai Po Road.CATPart) (Fig.4.9)

7. Beam and Girder Layout (Beam and Girder Layout.CATPart) (Fig.4.10)

8. Minipiles Layout (Minipiles Layout.CATPart) (Fig.4.11)

9. Wall Layout (Wall Layout.CATPart) (Fig.4.12)

10. Tracks (Track.CATPart) (Fig.4.13)

11. Concrete Platform layout (Concrete Platform.CATPart) (Fig.4.14)

12. Ground foundation (Ground.CATPart) (Fig.4.15)

13. Train Station and Podium(Train_Station_and_Podium.CATPart) (Fig.4.16)

(….) is the file name in CATIA V5.

Layout drawing is very complicated part in CATIA V5 and time consuming. As

all existing layout plans of this site are AutoCAD file (dwg), this AutoCAD type


34

file (dwg) cannot be used in CATIA V5. However, the other AutoCAD type file

(dxf) can be opened and applied by CATIA V5.

Therefore, the file type of these layouts is translated from dwg to dxf by

AutoCAD 2004. All layouts (dxf) then can be opened on the CATIA V5

environment but it cannot be edited by CATIA V5. To deal with this problem, all

files are saved as the format of CATIA type file (CATPart) which can be edited in

CATIA V5.

Figure 4.3 Master Layout (Source: Kang Yuen Chan,2006)


35

Figure 4.4 Site Layout


Figure 4.5 Road & Building Layout



36

Figure 4.6 Rail Layout


Figure 4.7 Existing Pad



37

Figure 4.8 Railway


Figure 4.9 Tai Po Road Layout



38

Figure 4.10 Beam and Girder Layout


Figure 4.11 Minipiles Layout



39

Figure 4.12 Wall Layout


Figure 4.13 Tracks



40

Figure 4.14 Concrete Platform Layout


Figure 4.15 Ground Layout



41

Figure 4.16 Train and Podium



42

4.6 The production of 3D Virtual Resources

The production of 3D Virtual Resources is Gantry and LTM1500 mobile crane.

The functions of these two 3D Virtual Resources are to generate the

transportation of the all types of elements in the simulation process. These two

transportation machines are also created by CATIA V5 assembly design, part

design and advanced command for control the action. They are applied in

different stages of the production. The Gantry and LTM1500 mobile are applied

in the first stage and second stage respective.

4.6.1 Gantry

The Gantry can generate the rail roads and does not affect the transportation of

rail. There are four gantry cranes which connect one gantry hock on gantry as

well as move along the rail.

Figure 4.17 Gantry machine


43


Figure 4.18 Detail of gantry machine


By selecting the Create a Device Move Activity icon. , the Jog window will

appear on the screen. The gantry, Gantry Car and Gantry Hook can be moved by

the adjustment of value in the window.

Table 4.2 Table of Command (Source: Kang Yuen Chan,2006)

Figure 4.19 Control of gantry


DOF Controls Function

Command 1 Moving Gantry along the rail

Command 2 Moving horizontal Gantry Car1


Command 4 Moving Vertical Gantry Hook1







44

4.6.2 LTM1500 mobile crane

The LTM1500 mobile crane has better mobility and takes shorter time to set-up.

It can be applied on the podium, pad. As Ho Tung Lau site is a very crowded site,

it is more convenient for the worker to use the transportation machine with high

mobility. Besides, there is one hook of this transportation machine to allow the

worker to transport materials in all directions.

Figure 4.20 LTM1500 mobile crane



45

Figure 4.21 The detail of LTM1500 mobile crane


By selecting the Create a Device Move Activity icon. , the Jog window will

appear on the screen. Adjusting the angle projection of the CraneArm, extending

the length of CraneArm1-5, adjusting the angle projection of the RopeHolder,

moving Vertical Hook and rotating the whole of CraneArm can be used on this

window.


46

Figure 4.22 Control of LTM1500 mobile crane


Table 4.3 Table of Command in LTM1500 mobile crane


DOF Controls Function

CraneBaseRev Adjusting the angle projection of the

CraneArm

CraneArm1 Extending the length of CraneArm1





RopeHolderRev Adjusting the angle projection of the

RopeHolder

HookVerticalPosit

ion

Moving Vertical Hook

Command 9 Rotating the whole of CraneArm


47

4.7 The production of the part elements

In this site, there are numerous parts of elements (1957 files) to establish the Ho

Tung Lau Model. You should remember the concept of the CATIA V5. The

model has many assembly parts. In the Assembly workbench, it is easy for users

to place component parts and sub-component together to form finished

assemblies.

There are all assembly files which include many components parts.

No Assembly File Part File Sub-Part File

Bracing Layout 1 Bracing

Bracing-A-D34 to

Bracing-A-D51

Beam and Girder Layout

Steel Beam Layout

2 Girder

SG-D33 to

SG-D53


Bracing Layout

Steel Beam Layout

3 Steel Beam

SB-7 to

SB-41-9

Beam Layout


4 T-Beam

T-Beam-D33 T-Beam-D33-01 to T-Beam-D33-26,


48

T-Beam-D33-Joint

T-Beam-D33-Part

T-Beam-D33-Top

T-Beam-D52-01 to T-Beam-D52-26,

T-Beam-D52-Joint

T-Beam-D52-Part

to T-Beam-D52

T-Beam-D52-Top


Steel Beam Layout

Truss-1-Grid truss-1

ST-1-a to

ST-1-e8

Truss-4-Grid

5 Trusses

to truss-4

ST-4-1 to

ST-4-3

Structural Steel Column SC33A Grout

Structural Steel Column SC33A Steel

Steel Column Top Plate TP33A

Structural Steel Column

SC33A

Steel Column Base Plate BP33A

Structural Steel Column SC53A Grout

Structural Steel Column SC53A Steel

Steel Column Top Plate TP53A

6 Columns

to Structural Steel Column

SC53A

Steel Column Base Plate BP53A

Podium 7 Train Station

and Podium Train_Station


49

Present D32

8 Track Track

9 Ground Ground

10 Existing Pad Existing Pad

Table 4.4 the structure of all CATIA file in Ho Tung Tau Model


The Columns (Assembly) such as is typical sample for creating the assembly file

as it includes many components part. For example, “Structural Steel Column

SC33A” (Fig. 4.23) is a one part product contains four sub-part elements which is

“Structural Steel Column SC33A Steel”, “Structural Steel Column SC33A Grout”,

“Steel Column Top Plate TP33A” and “Steel Column Base Plate BP33A”. Next part

will show the step of creating the whole “Structural Steel Column SC33A”.

Figure 4.23 The typical sample of columns which is Structural Steel Column SC33A



50

Figure 4.24 The inside view of columns


Figure 4.25 The wireframe view of columns



51

4.7.1 The sample of creating the Column (Assembly File)

There are seven steps to create the Column ” Structural Steel Column SC33A”

A. Creating the “Structural Steel Column SC53A Steel” .etc using

Sketcher & Part Design

B. Changing the color of 3D model

C. Inserting components into the Assembly Design Workbench

D. Moving components in the Assembly Design Workbench using the Compass

and Snap Tool

E. Setting up Site Layout

F. Changing CATProduct to CGR

G. Automating the Modification Using a Marco


52

A. Creating the “Structural Steel Column SC53A Steel” .etc using

Sketcher & Part Design

1. Start CATIA V5

2. By default CATIA V5 will bring up the Product Structure Workbench.

Select the Part Design Workbench from Start pull down menu or the

Welcome To CATIA V5 window.

Figure 4.26 Part Design Workench (Source: Kang Yuen Chan,2006)


53

3. With the Part1 branch highlighted use your Right mouse button to activate

the Contextual Menu.

4. Select Properties (Fig. 4.27).

5. From the Properties window select the Product tab. This will show you

the Part Number (Fig. 4.28).

6. For the New Part box type in “Structural Steel Column SC53A Steel”.

7. Select OK to change the name of part1.

8. Notice that a “Structural Steel Column SC53A Steel” branch was just

created in the Specification Tree. If you expand the “Structural Steel

Column SC53A Steel” branch you will have a Specification Tree.

9. Enter the Sketcher Workbench using the ZX Plane.

10. Use the Profile tool.

11. Create 12 lines in succession and click the End Point to the Start Point (Fig.

4.29).

Figure 4.27 Contextual Menu (Source: Kang Yuen Chan,2006)

Figure 4.28 Properties (Source: Kang Yuen Chan,2006)


54

12. Use the Rectangle tool.

13. Create the rectangle inside the previous drawing (Fig. 4.30).

14. Select the Constraint

tool.

15. Select the all lines to be

constrained (Fig. 4.31).

16. Double click on the value box

of the Dimensional Constraint

you want to modify. The value

box is the green dimension line with an attached with an attached value.

17. The Constraint Definition

window will pop up (Fig. 4.32).

This window shows the existing

value for the Sketcher element.

18. Edit the value by typing over the

existing value.

19. Apply the new value by selecting the OK button or pushing the Enter key

Figure 4.30 Using Rectangle tool

(Source: Kang Yuen Chan,2006) Figure 4.29 Using Profile tool


Figure 4.31 Using Constraint


Figure 4.32 Constraint Definition (Source: Kang Yuen Chan,2006)


55

(Fig. 4.33).

20. Exit the Sketcher Workbench. This will put you back into the Part Design

Workbench.

21. Select the Pad tool.

22. The Pad Definition window appears.

23. In the First Limit area, enter “11405mm” for the Length box. Leave the

Type box set at “Dimension”.

24. In the Profile section, the Selection box should show Sketch.1.

25. Select the OK button.

26. Then, the “Structural Steel Column SC53A Steel” is finished (Fig. 4.35).

Other three part components such as “Structural Steel Column SC53A Grout”,

“Steel Column Top Plate TP53A” and “Steel Column Base Plate BP53A” are

Figure 4.33 After editing on constraint



56

created by using previous Sketcher and Part Design. (Fig. 4.36 - 4.38 )

Figure 4.35 “Structural Steel Column SC53A Steel”


Figure 4.36 “Structural Steel Column SC53A Grout”



57

Figure 4.37 “Steel Column Top Plate TP53A”


Figure 4.38 “Steel Column Base Plate BP53A”



58

B. Changing the color of 3D model

However, the 3D model of “Steel Column Top Plate TP53A” and “Steel Column

Base Plate BP53A” should be filled in orange color. This process should be added

between part A in step 8 and 9.

1. With the Part branch highlighted use your Right mouse button to activate

the Contextual Menu.

2. Select Properties (Fig. 4.39).

3. From the Properties window select the Graphic tab.

4. Select the suitable color in the fill color box.

5. Select OK and then the color of all 3D models will be changed.

Figure 4.39 Proporties



59

C. Inserting components into the Assembly Design Workbench

There are four part components to insert the Assembly Product Design.

1. Select the Assembly Design Workbench from Start pull down menu

2. With the Product1 branch highlighted use your Right mouse button to

activate the Contextual Menu.

3. Select Properties to edit the name in “Structural Steel Column SC53A”.

4. The top of the Specification Free must be selected before components can

be inserted into the Assembly Design Workbench.

5. Double click on the “Structural Steel Column SC53A”. There are two

methods of selecting an Existing Component. Select the Existing Component

tool or use your Right mouse button to activate the Contextual Menu

and then select Components (Fig. 4.40), Existing Component…. Then the

File Selection window will appear on the screen.

6. In the File Selection window, select the document that was saved earlier in

named “Structural Steel Column SC53A Steel”. Select the Open button. The

part should appear on the screen.

7. Repeat the step 6 and 7 to open “Structural Steel Column SC53A Grout”,

“Steel Column Top Plate TP53A” and “Steel Column Base Plate BP53A”.

8. All the components will appear on the screen (Fig. 4.41).


60

Figure 4.40 “Steel Column Base Plate BP53A”


Figure 4.41 Inserted all components all one product



61

D. Moving components in the Assembly Design Workbench using

the Compass and Snap Tool

The location and orientation of the assembly components can also be

manipulated by using the Compass tool. The Compass tool was briefly illustrated

below.

1. From the Specification Tree, select the “Structural Steel Column SC53A

Steel” branch.

2. Place the Compass tool on the “Structural Steel Column SC53A Steel”

Surface. The Compass tool will turn green indicating that the selected

component can be manipulated. For detail instructions on how to

manipulate the Compass tool refer back (Fig. 4.42).

3. Select the Z-axis on the Compass tool and drag it to the approximate

location to prevent the overlap other components. The “Structural Steel

Column SC53A Steel” will move along with the Compass.

4. By previous step, the components can be dragged to the approximate

location (Fig. 4.43).

5. With “Structural Steel Column SC53A Steel” highlighted, select the Snap

tool.

6. Select the first line of the “Structural Steel Column SC53A Steel” component

and then select the second line of the “Structural Steel Column SC53A Grout”

component. The first line of the “Structural Steel Column SC53A Steel”

component will be moved to the position which projected onto the second

line (Fig. 4.44).

7. Select the first point which is angle of the “Structural Steel Column SC53A


62

Steel” component and then select the second point which is angle of the

“Structural Steel Column SC53A Grout” component. The first point of will be

moved to the position. The two points are coincident. “Structural Steel

Column SC53A Steel” component will be moved inside “Structural Steel

Column SC53A Grout” component (Fig. 4.45 - 4.46).

By using compass and Snap Tool, all the components can be moved onto their

exact locations (Fig. 4.47).

Figure 4.42 Dragged element


Figure 4.43 Dragged all elements



63

Figure 4.44 Snapped element 1


Figure 4.45 Snapped element 2



64

Figure 4.46 Inserted the element


Figure 4.47 Finished the insert



65

E. Inserting Column Layout and Structural Steel Column SC33A to

SC53A

1. Select the Assembly Design Workbench from Start pull down menu.

2. Select Properties to edit the name in “Columns”.

3. Select OK to change the name of product1.

4. Double click on the “Columns”. There are two methods of selecting an

Existing Component. Select the Existing Component tool and then

select Components, Existing Component….

5. In the File Selection window, select the document that was saved earlier in

named “Column Layout”. Select the Open button. The part should appear on

the screen (Fig. 4.48).

6. Double click on the “Columns”. Select the Existing Component tool. Select

Structural Steel Column SC33A to SC53A. Select the Open button. The part

should appear on the screen.

7. By using the Compass and Snap Tool, the Structural Steel Column SC33A to

SC53A can be placed on the suitable position (Fig. 4.49 - 4.50).


66

Figure 4.48 Open “Column Layout”


Figure 4.49 Placed One Structural Steel Column



67

Figure 4.50 Placed All Structural Steel Columns



68

F. Changing CATProduct to CGR

CATIA V5 is powerful software. The requirement of this system is very high

specially the simulation process. It is good for the users to adopt smaller files so

as to run the program smoothly.

In this “Structural Steel Column SC53A.CATProduct”, there are five files such as

Steel Column Base Plate BP53A.CATPart, Steel Column Top Plate TP53A.CATPart,

Structural Steel Column SC53A Grout.CATPart, Structural Steel Column SC53A

Steel.CATPart and Structural Steel Column SC53A.CATProduct. As the total size of

these five files is 365K and the overall size of the Structural Steel Column is

16.3MB, the workload of the computer is very heavy. In order to ensure the

smooth operation of the program, reducing file size is necessary.

Changing the types (format) of file can be saved the memory. The file type

changes from CATProduct to CGR. But, the drawback of CGR is that this file

cannot edit the drawing.

1. Open file “Structural Steel Column SC53A.CATProduct”

2. Select File, Save As. This will bring up the Save as window (Fig. 4.51).

3. Select file type to CGR and then OK. (The file name is “Structural Steel

Column SC53A.CGR”)

The new file size is 29.2KB that is reduced 92%. After the file size’s reduction,

CATProduct is then replaced by CGR.


69

4. Open file “Columns.CATProduct”

5. With “Structural Steel Column SC53A” highlighted, selecting the Replace

Component tool and then Select Components, Replace Component….

Then the File Selection window will appear on the screen (Fig. 4.52).

6. Select file “Structural Steel Column SC53A.CGR” and then select the Open

button or pushing the Enter key.

Figure 4.51 Save as CGR


Figure 4.52 Replace Component



70

G. Automating the Modification Using a Marco

Reduction of file size is a good method to save the memory but this process

should be repeated more times as many files should be edited. Fortunately,

CATIA V5 has macro function. This function is a powerful tool when it comes to

accomplishing a process that is repeated times and times. All the CATProduct can

be saved and replaced automatically to the CGR by one button.

1. Open file “Columns.CATProduct”

2. Select Tools, Macro, Macros. This will bring up the Macros window (Fig.

4.53).

3. Select the Create button. This will bring up the Create a new macro window

and then select the OK button or pushing the Enter key (Fig. 4.54).

4. Select the Edit Button. This will bring up the Macros Editor window shown

in Figure (Fig. 4.55).

5. Type the below Language="VBSCRIPT" command in the blank of Macros

Editor.

6. Save the edits and then close the Macros Editor window (Fig. 4.56).

7. The Macros window should still be on the screen. Select the Run button.

The program runs that from “Structural Steel Column SC33A.CATProduct” to

“Structural Steel Column SC53A.CATProduct” save as from “Structural Steel

Column SC33A.cgr” to “Structural Steel Column SC53A.cgr” and then from

“Structural Steel Column SC33A.CATProduct” to “Structural Steel Column

SC53A.CATProduct” will replaced the position in the Columns file by from


71

“Structural Steel Column SC33A.cgr” to “Structural Steel Column SC53A.cgr” .

Figure 4.55 Marco Editor 1 Figure 4.56 Marco Editor 2

(Source: Kang Yuen Chan,2006) (Source: Kang Yuen Chan,2006)

Figure 4.53 Macros (Source: Kang Yuen Chan,2006)

Figure 4.54 Create a new macro (Source: Kang Yuen Chan,2006)


72

Language="VBSCRIPT" command Sub CATMain() Set productDocument1 = CATIA.ActiveDocument Set documents1 = CATIA.Documents Set product1 = productDocument1.Product Set products1 = product1.Products Set productDocument4 = documents1.Item("Structural Steel Column SC44A.CATProduct") productDocument4.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC44A.cgr", "cgr" Set product4 = products1.Item("Structural Steel Column SC44A.1") Set Nothing1 = products1.ReplaceComponent(product4, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC44A.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument5 = documents1.Item("Structural Steel Column SC44B.CATProduct") productDocument5.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC44B.cgr", "cgr" Set product5 = products1.Item("Structural Steel Column SC44B.1") Set Nothing1 = products1.ReplaceComponent(product5, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC44B.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument4 = documents1.Item("Structural Steel Column SC45A.CATProduct") productDocument4.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC45A.cgr", "cgr" Set product4 = products1.Item("Structural Steel Column SC45A.1") Set Nothing1 = products1.ReplaceComponent(product4, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC45A.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument5 = documents1.Item("Structural Steel Column SC45B.CATProduct") productDocument5.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC45B.cgr", "cgr" Set product5 = products1.Item("Structural Steel Column SC45B.1") Set Nothing1 = products1.ReplaceComponent(product5, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC45B.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument4 = documents1.Item("Structural Steel Column SC46A.CATProduct") productDocument4.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC46A.cgr", "cgr" Set product4 = products1.Item("Structural Steel Column SC46A.1") Set Nothing1 = products1.ReplaceComponent(product4, "E:\China


73

State\CATProduct\Columns\column cgr\Structural Steel Column SC46A.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument5 = documents1.Item("Structural Steel Column SC46B.CATProduct") productDocument5.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC46B.cgr", "cgr" Set product5 = products1.Item("Structural Steel Column SC46B.1") Set Nothing1 = products1.ReplaceComponent(product5, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC46B.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument4 = documents1.Item("Structural Steel Column SC47A.CATProduct") productDocument4.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC47A.cgr", "cgr" Set product4 = products1.Item("Structural Steel Column SC47A.1") Set Nothing1 = products1.ReplaceComponent(product4, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC47A.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument5 = documents1.Item("Structural Steel Column SC47B.CATProduct") productDocument5.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC47B.cgr", "cgr" Set product5 = products1.Item("Structural Steel Column SC47B.1") Set Nothing1 = products1.ReplaceComponent(product5, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC47B.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument4 = documents1.Item("Structural Steel Column SC48A.CATProduct") productDocument4.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC48A.cgr", "cgr" Set product4 = products1.Item("Structural Steel Column SC48A.1") Set Nothing1 = products1.ReplaceComponent(product4, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC48A.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument5 = documents1.Item("Structural Steel Column SC48B.CATProduct") productDocument5.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC48B.cgr", "cgr" Set product5 = products1.Item("Structural Steel Column SC48B.1") Set Nothing1 = products1.ReplaceComponent(product5, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC48B.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument4 = documents1.Item("Structural Steel Column SC49A.CATProduct") productDocument4.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC49A.cgr", "cgr"


74

Set product4 = products1.Item("Structural Steel Column SC49A.1") Set Nothing1 = products1.ReplaceComponent(product4, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC49A.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument5 = documents1.Item("Structural Steel Column SC49B.CATProduct") productDocument5.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC49B.cgr", "cgr" Set product5 = products1.Item("Structural Steel Column SC49B.1") Set Nothing1 = products1.ReplaceComponent(product5, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC49B.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument4 = documents1.Item("Structural Steel Column SC50A.CATProduct") productDocument4.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC50A.cgr", "cgr" Set product4 = products1.Item("Structural Steel Column SC50A.1") Set Nothing1 = products1.ReplaceComponent(product4, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC50A.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument5 = documents1.Item("Structural Steel Column SC50B.CATProduct") productDocument5.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC50B.cgr", "cgr" Set product5 = products1.Item("Structural Steel Column SC50B.1") Set Nothing1 = products1.ReplaceComponent(product5, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC50B.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument4 = documents1.Item("Structural Steel Column SC51A.CATProduct") productDocument4.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC51A.cgr", "cgr" Set product4 = products1.Item("Structural Steel Column SC51A.1") Set Nothing1 = products1.ReplaceComponent(product4, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC51A.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument5 = documents1.Item("Structural Steel Column SC51B.CATProduct") productDocument5.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC51B.cgr", "cgr" Set product5 = products1.Item("Structural Steel Column SC51B.1") Set Nothing1 = products1.ReplaceComponent(product5, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC51B.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument4 = documents1.Item("Structural Steel Column SC52A.CATProduct")


75

productDocument4.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC52A.cgr", "cgr" Set product4 = products1.Item("Structural Steel Column SC52A.1") Set Nothing1 = products1.ReplaceComponent(product4, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC52A.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument5 = documents1.Item("Structural Steel Column SC52B.CATProduct") productDocument5.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC52B.cgr", "cgr" Set product5 = products1.Item("Structural Steel Column SC52B.1") Set Nothing1 = products1.ReplaceComponent(product5, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC52B.cgr", True) Set productDocument1 = CATIA.ActiveDocument Set productDocument4 = documents1.Item("Structural Steel Column SC53A.CATProduct") productDocument4.ExportData "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC53A.cgr", "cgr" Set product4 = products1.Item("Structural Steel Column SC53A.1") Set Nothing1 = products1.ReplaceComponent(product4, "E:\China State\CATProduct\Columns\column cgr\Structural Steel Column SC53A.cgr", True) End Sub


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4.7.2 Ho Tung Laul Model

According to previous method, all type of assembly files can be created. By the

Master Layout and all type of building elements, Ho Tung Lau 3D model can be

created and save as “Ho Tung Lau Model. CATProduct” (Fig. 4.58).

Figure 4.57 Ho Tung Lau Model



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4.8 The production of the process simulation

1. Start DELMIA V5

2. Select the DPM - Process and Resource Definition from Start pull down

menu

3. With the Product branch highlighted and select Insert, Insert Product .

This will bring up the File Selection window.

4. Select Ho Tung Lau Model. CATProduct”. The Ho Tung Lau Model should

appear on the screen (Fig. 4.58).

Figure 4.58 Ho Tung Lau Model in DELMIA



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4.8.1 Creating process simulation

There are sive main essential activities in process simulation below:

A. Creating Activities to a Process

B. Creating logical activities

C. Creating a Device Move Activity

D. Creating a Simulation Delay Activity

E. Creating a Visibility Activity

F. Combined using previous activities

A. Creating Activities to a Process

1. Select the Insert Activity icon in the Activity Management

toolbar.

2. The Activities to a Process appears in the PPR tree.

B. Creating logical activities

The function of logical activities ensures the action of

activity. Start and Stop activities may be automatically

created inside the activity.

1. Select the logical activities icon on the logical activities toolbar.

2. The logical activities appears in the PPR tree.


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C. Creating a Device Move Activity

According to the production of 3D Virtual Resources, Full set of robotic

motion of a robot can be used. By creating a Device Move Activity, the

machines such as Gantry and LTM1500 mobile crane can be moved.

1. Select the Create a Device Move Activity icon. The Activity

Creation window will appear on the screen (Fig. 4.59).

2. Select the location for the activity and select the OK button.

3. On the PPR tree e, select the device you want to move.

4. Select the joint jogging tab and adjust the value of command (Fig.

4.60).

5. Select the Modify Activity and then Close.

6. The Device Move Activity appears in the PPR tree.

Figure 4.59 Activity Creation Options Figure 4.60 Jog window



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D. Creating a Simulation Delay Activity

In the whole process, the delay is required to simulate the processing time for

some non-motion activities

1. Select the Create Simulation Delay Activity icon . The Activity

Creation window will appear on the screen.

2. Select the location for the activity and select the OK button. The Delay

window appears in the bottom right corner.

3. Enter the length of the delay (in seconds) in the Duration box and select

the OK button. The delay activity appears in the PPR tree (Fig. 4.61).

4. The duration of the delay can be modified by selecting the Delay Activity

on the PPR tree with the right mouse button and using the context menu.

Figure 4.61 Delay Window



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E. Creating a Visibility Activity

A function of visibility activity is to hide or show parts, provide a transparent

view of a part and provide a different color for a part. .

1. Select the Create a Visibility Activity icon. The Activity Creation

window will appear on the screen.

2. Select the location for the activity and select the OK button.

3. The Visibility Activity appears in the PPR tree.

4. The preview window appears and the Edit Visibility Operation window will

appear on the screen.

Case 1 - showing component part (represented under construction)

In the Edit Visibility Operation window, select “Show Selected” and “Set” in color

tab. Then select red color and select the OK button (Fig. 4.62).

Case 2 - showing component part (represented finish)

In the Edit Visibility Operation window, select “Show Selected” and “reset” in

color tab. Then select the OK button (Fig. 4.63).

Figure 4.62 Edit Visibility Operation 1 Figure 4.63 Edit Visibility Operation 2



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F. Combined using previous activities

By previous five main essential activities, the typical one whole activity can be

done (Fig. 4.64). The Step is …

1. Adding Activities to a Process

2. Creating logical activities

3. Creating a Simulation Delay Activity

4. Creating a Device Move Activity

5. Creating a Visibility Activity – Case 1

6. Creating a Device Move Activity

7. Creating a Visibility Activity – Case 2

8. Creating logical activities

Figure 4.64 The tree of the simulation activities



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4.8.2 Editing process simulation

There are two essential functions to edit the process simulation.

A. Opening the PERT chart

A PERT Chart is a graphical presentation of a process. The box represents

each activity with the process. All activities have some links to one another

or to logical operators. It can edit the link between any activities.

1. Select the Open PERT Chart icon and Select an activity on the

PPR tree. The PERT Chart of the process window will appear on the

screen.

2. In the PERT Chart, the activities belonging to the selected activity will

be shown (Fig. 4.65).

Figure 4.65 PERT Chart



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B. Opening the Gantt chart

A Gantt chart is bar graph of a process. It can show and edit Begin Time and

End Time as well as dependencies. In DELMAIN V5, the Gantt chart is one

of several available 2D views of the process. It is similar to MS Project.

1. Select the Open Gantt chart icon and Select an activity on the PPR

tree. The Gantt chart of the process window will appear on the screen

(Fig. 4.66).

2. Begin Time, End Times and duration can be edited.

Figure 4.66 Gantt chart



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4.8.3 Viewing a Simulation

1. Select the Workcell Squencing from Start pull down menu

2. Select the Process Simulation icon.

3. The icon turns orange. The Process Simulation command box and a

Simulation Control Tools toolbar appear.

Goto start

Pause

Step forward

Play

Goto end

Simulation mode: Single/continuous.

Shows the continuous simulation mode

button.

Step size (To increase or decrease the

speed of the simulation)

Shows Simulation time

It is last part of simulation. After all setting and creating, the simulation can be

run by this Process Simulation icon.


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4.9 Conclusion

After the input of information in DELMIA by previous methods, the process

simulation can be run (Fig. 4.67). The process simulation is saved as “process

simulation” in the disc. (Fig. 4.68 - 4.)

Figure 4.67 Ho Tung Lau Model in DELMIA



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Figure 4.68 Process Simulation 1





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89






90






91






92





CHAPTER 5

Analysis using virtual prototyping on Ho

Tung Lau Development

5.1 Benefits of using virtual

prototyping in the building

industry

5.2 Limitation of using virtual

prototyping in the building

industry


94

CHAPTER 5 - Analysis using virtual prototyping

on Ho Tung Lau Development

5.1 Benefits of using virtual prototyping in the building

industry

According to an interview with Mr Wang (2006), benefits of using virtual prototyping

in the construction industry can be concluded as follows.

5.1.1 Identification of possible planning error

It is an important step for planning construction. The early identification of possible

planning error can reduce the total project sum. Simulation process can be used to

identify the planning error obviously. Sometimes, the duration of construction of

column and beam may be overlapped. By using simulation, the planning error can be

shown easily.

5.1.2 Evaluation of innovative construction method in a virtually real

environment

Virtual Prototyping can assist an evaluation of innovative construction method in a

virtually real environment greatly. Sometimes, project manger has an innovative idea

on construction. By using innovative construction method on real environment may

cause risks and make errors. However, they are unacceptable. The construction virtual

prototyping allows those innovation construction methods to be processed in the

computer.


95

5.1.3 Identification of idle time and resources

Virtual Prototyping can identify idle time and resources as well as new alternatives to

achieve optimization of the program. It can prevent wastage of time and resources.

Therefore, it can develop a detailed and improved construction program with

minimum time and resources.

5.1.4 Good communication between project staff from top management

to worker level

One benefit of virtual prototyping is to reduce the communication problem between

project staff. Communication problems between project staff from top management to

worker level always appear in construction industry. The workers may confuse and

misunderstand during the construction process. This simulation process can give

dissemination of holistic and is easy to understand the planning information to project

staff from top management to worker level.

5.1.5 Better understanding on the design

Some building designs are very complicated which is difficult for contractors to

understand. CATIA can provide better illustration to contractors on the building

designs since the shape of building, the detail of building elements such as joints and

connections can be clearly shown by 3D model on the computer. Holtzman (2002)

explained that using CATIA can minimize the discrepancy between different

contractors’ work as everyone is directly referencing a single, complete, 3D model. It

can reduce time to understand building design and avoid misunderstanding. Then, the

duration of construction and the contract sum of the project can be minimized.


96

5.2 Limitation of using virtual prototyping in the building

industry

In spite of the numerous benefits of using CATIA system, there is still some critical

limitations of using virtual prototyping.

5.2.1 High hardware configuration

The hardware configuration in computer is very high. For example,

Hardware configuration: 1. Pentium 4 3.0GB CPU

2. 2.0GB DDR RAM

3. 80GB of available Hard disk space

4. 256MB (128bit) Display card

In the case of Ho Tung Lau development. Ho Tung Lau Model contains 2,360

components elements. Although the hardware configuration is very powerful, the

running simulation process time is still too slow. If more complex building is created,

the higher hardware configuration will be needed.

5.2.2 High price and license Fee

Another problem is the price and license fee of the CATIA and DELMIA software. It

is an unbelievable price. According to Dassault Systemes, CATIA V5 products can be

ordered in three ways:

As an integral part of a standard configuration

As an add-on to a configuration

As a license that can be shared by moving between configurations


97

(Price come from Amazon.com and Stephen(2006))

All of the above configurations consist of four to twelve products. Each product is

sold individually. From the price table, it can be seemed that CATIA is very expensive.

The firms need to pay for the license subscription fee annually when they adopt the

softwares. Moreover, the price of high hardware requirement is quite expensive.

Because of the high running cost, most of firms cannot afford to pay such price. Also,

according to Wang (2006), our firm cannot buy this software as CATIA is very

expensive.

5.2.3 High training cost and labour cost

CATIA is not simple CAD software. It is quite complex software. The firm must

provide the CATIA training course for staff who should have high learning capacity in

CAD. The time of training course is quite long. According to the training and labour,

the firm will spend a lot on providing the training course and labour.

According to Holtzman (2002), the training and labour for CATIA is expensive, as

some CATIA V5 products can require a lot of training.

CAD Software (One user) Price

AutoCAD LT2007 US$ 849.99

MicroStation V8 US$ 398.96

CATIA V5 (standard configuration) US$ 64,100.00

CHAPTER 6

Conclusion

6.1 Conclusion

6.2 Recommendation


99

CHAPTER 6 - Conclusion

6.1 Conclusion

Construction Virtual Prototyping was demonstrated by using CATIA V5 system

through the case study of Ho Tung Lau Development. It is an innovation method and

useful tool that assists the development of construction industry to get into a new

century. Construction Virtual Prototyping brings various benefits to construction

practitioners because it can identify possible planning error, evaluate innovative

construction method in a virtually real environment, identify idle time and resources

and disseminate holistic as well as set up communication channels between project

staff of different levels to allow the transmission of planning information.

However, it is not very common for construction practitioners to apply CATIA V5 in

local construction industry because of different limitations as mentioned in previous

chapter. For examples, high requirements of computer hardware configurations, high

cost of purchasing software and annual license fees as well as high training cost and

labour cost.

CATIA brings various benefits to construction practitioners but it is not commonly

applied in local construction industry because of high cost. It is expected that this

software can be widely adopted to assist the development of construction industry in

near future.

6.2 Recommendation

The Department of Building and Real Estate, The Hong Kong Polytechnic University,


100

provides the valuable opportunity for students to learn and practice new technology. It

is not only allow students to acquire new technology, but also bring new technology

into local construction industry. I was encouraged to take this valuable chance to

participate in this dissertation to look into the application of construction virtual

prototyping to learn new skills and investigate.

it is recommended that more innovative software can be invented and adopted in local

construction industry so that the productivity of local construction industry can be

improved.

Reference & Bibliography

Reference

Bibliography

Construction Virtual Prototyping – Case Study of Ho Tung Lau Development REFERENCE AND BIBLIOGRAPHY

102

Reference

Boeing (1995). Boeing 777 Digital Design Process Earns Technology Award. Boeing.

News Release, June 14, 1995

J. Glymph et al. (2004). Automation in Construction 13. (2004) 187-202

Ming Sun and Rob Howard (2004). Understanding I.T. In Construction. London and

New York : Spon Press, 2004

Bjork, B.C. (1999). Information Technology in construction: domain definition and

research issues. International Journal of Computer Integrated Design and

Construction, NO. 1,pp.3-17

Lucas, Henry C. (2000). Information Technology for Management, 7th ed. Boston:

Irwin/McGraw-Hill

Laudon, Kenneth C (1995). Information technology: concepts and issues. Boyd &

Fraser, pp4-10

Autodesk(2006). Autodesk Homepage. Available at:http://www.autodesk.com

Dassult Systems (2006). Enhanced co-operation to support PLM research for

Architectural, Engineering, and Construction Industry. Available at:

http://www.3ds.com

G.. Aound, A. Lee and S. Wu (2005). The Utilization of Building Information Models

In nD Modelling: A Study of Data Interfacing and Adoption barriers. April 2005

at http://www.itcon.org/2005/08/

Li, R. (1995). Review in the application of CADD in AEC projects – The Hong Kong

experience. HKIA Journal, Vol.2, No.1, pp.73-77

Holtzman (2002). Technology Curve. Architecture. December 2002, Vol. 91 Issue 12,

p140, 2p, 2c.


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Bibliography

Cozzens, Richard (2004). Advanced CATIA V5 Workbook : CAD/CAM engineering

technology, SDC Publications. c2004.

Cozzens, Richard (2004). CATIA V5 Workbook, releases 12 & 13, SDC Publications.

c2004.

Du Lirong, Lin Bozheng bian zhu (2000). CATIA dian nao fu zhu she ji yu shi wu ying

yong. Taibei : Quan hua ke ji tu shu gu fen you xian gong si, Minguo 89

Fred Karam, Charles Kleismit (2004). Using CATIA V5. Clifton Park, N.Y. :

Thomson/Delmar Learning, c2004.

Kalay, Yehuda E. Architecture's new media: principles, theories, and methods of

computer-aided design. Cambridge, Mass. : MIT Press, c2004.

Kenny T.C. Tse, Andy K.D.Wong and Francis K.W. Wong(2005). Modeling Objects

and Interfaces in Building Information Modeling

Malkawi, Ali. And Augenbroe, Godfried. Advanced building simulation. New York,

NY : Spon Press, 2003.

Mr Stephen Kong (2005), Virtual Prototyping Powerpoint

Papamichael, Konstantinos Michael. Design process and knowledge : possibilities

and limitations of computer-aided design. Ann Arbor, Mich. : U.M.I., 2003,

c1991.

Retik, A. (Arkady). Computer integrated planning and design for construction.

London : Thomas Telford Pub., 2001.

Xie Wenxiang, Xie Wenhe bian zhu (2003). CATIA V5 ling jian she jian. Xinzhuang

Shi [Taiwan] : Tai ke da tu shu gu fen you xian gong si Minguo 92

You Chunfeng ... deng bian (2003). CATIA V5 shi yong shou ce. Jin jie ying yong


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pian, Taibei Shi : Zhi cheng shu wei ke ji gu fen you xian gong si

http://www.3ds.com/corporate/about-us/brands/catia/

http://www.3ds.com/corporate/about-us/brands/delmia/

http://www.building.com.hk

http://www.catia.ibm.com

http://www.gehrytechnologies.com

Appendix

Appendix I Interview Letter

Appendix II Interview

Question

Construction Virtual Prototyping – Case Study of Ho Tung Lau Development Appendix

106

Appendix I Interview Letter

1 March 2006

Dear Mr. Wang

Re: Request for an interview

I am a final year student of BSc (Hons) in Building Engineering and Management at

The Hong Kong Polytechnic University. I am conducting a research for my final year

dissertation on “Construction Virtual Prototyping – Case Study of for Ho Tung Lau

Development” under the supervision of Professor Heng Li.

I would be most grateful if I could visit you in person to talk about Construction

Virtual Prototyping. The interview will not last for longer than 30 minutes.

Attached please find a list of my proposed topics / questions for discussion during the

interview. I look forward to hearing from you and meeting you very soon. Meanwhile,

I can be contacted at mobile phone 9833 3157 or by email: [email protected]

for any enquiries or clarifications.

Thank you for your kind attention and help with my dissertation.

Yours sincerely,

Mr CHAN Kang Yuen, Neo

Student of BSc (Hons) in BEM

BRE, PolyU

Encl.: Draft questions in intervie

Construction Virtual Prototyping – Case Study of Ho Tung Lau Development Appendix

107

Appendix II Interview Question

Interview Questions

1. What is the great help of simulation process in Virtual Prototyping by using

CATIA V5?

2. What is the difference between CATIA V5 and other CAD software such as

AutoCAD?

3. Is it worth to spend time on using CATIA V5?

Why?

4. Do you purchase CATIA V5 for Computer-Aided-design in your company?

Why?

5. What do you think about Virtual Prototyping in Construction industry?

6. Do you invite Professor Heng Li, BRE, PolyU to create the 3D Model and

make the simulation process again for other building project?

Download - Construction Virtual Prototyping- Ho

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