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研究生： 花兒
Flores, Diana
論文名稱： Linking Engineers’ Scheduling Capabilities with Schedule Usage
Linking Engineers’ Scheduling Capabilities with Schedule Usage
指導教授： 張行道
Chang, Andrew S.
學位類別： 碩士
Master
系所名稱： 工學院 - 土木工程學系
Department of Civil Engineering
論文出版年： 2010
畢業學年度： 98
語文別： 英文
論文頁數： 117
中文關鍵詞： Scheduling knowledge 、scheduling practices 、schedule specifications 、construction disputes 、PMBOK
外文關鍵詞： Scheduling knowledge, scheduling practices, schedule specifications, construction disputes, PMBOK
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    • Schedule related problems are very common for construction projects. Possible reasons include ignorance of planning, not-well-prepared schedules, lack of scheduling experience, etc. On the other hand, various schedule analysis methods have been developed in the academic arena trying to help delineate responsibilities of project parties. However, many of these methods require sophisticated scheduling knowledge to understand.
    Research has identified that good scheduling practices or maturity has positive relationship with project performance. Good scheduling practices require scheduling knowledge, skills and experience. It seems that the lack of scheduling capabilities of engineers is the essential reason for the schedule problems.
    This research links the engineer’s scheduling capabilities with schedule usage. First, it reviewed the schedule related problems and reasons, as well as scheduling knowledge and practices. It also examined the construction engineers’ levels of scheduling capabilities. Then a questionnaire was designed to collect relevant data from construction engineers in Honduras and Taiwan for analysis.
    The analysis results indicate that respondents recognized that people are the main reasons for schedule related problems. Engineers scheduling capabilities have not reached a stable level shown by the fact that bar chart is still the major scheduling method used and the low schedule component conformance ratio. It also shows that more requirements can be written into the schedule specification when engineers’ schedule knowledge increases.
    Survey indicates that respondents who do scheduling as major work are more contractors. It means they work more with project schedule. They use schedule components more and have a better understanding and use of the elements in the schedule specification.
    This research also tried to find whether the engineers’ scheduling capabilities affect project schedule performance. However, the relationship between the use of schedule components and the time delay of the projects was not found.
    With an understanding of the above indications, it is essential to advance the engineers’ scheduling capability to a more sophisticated maturity level to ensure that project schedules are used as an effective management tool.

    Schedule related problems are very common for construction projects. Possible reasons include ignorance of planning, not-well-prepared schedules, lack of scheduling experience, etc. On the other hand, various schedule analysis methods have been developed in the academic arena trying to help delineate responsibilities of project parties. However, many of these methods require sophisticated scheduling knowledge to understand.
    Research has identified that good scheduling practices or maturity has positive relationship with project performance. Good scheduling practices require scheduling knowledge, skills and experience. It seems that the lack of scheduling capabilities of engineers is the essential reason for the schedule problems.
    This research links the engineer’s scheduling capabilities with schedule usage. First, it reviewed the schedule related problems and reasons, as well as scheduling knowledge and practices. It also examined the construction engineers’ levels of scheduling capabilities. Then a questionnaire was designed to collect relevant data from construction engineers in Honduras and Taiwan for analysis.
    The analysis results indicate that respondents recognized that people are the main reasons for schedule related problems. Engineers scheduling capabilities have not reached a stable level shown by the fact that bar chart is still the major scheduling method used and the low schedule component conformance ratio. It also shows that more requirements can be written into the schedule specification when engineers’ schedule knowledge increases.
    Survey indicates that respondents who do scheduling as major work are more contractors. It means they work more with project schedule. They use schedule components more and have a better understanding and use of the elements in the schedule specification.
    This research also tried to find whether the engineers’ scheduling capabilities affect project schedule performance. However, the relationship between the use of schedule components and the time delay of the projects was not found.
    With an understanding of the above indications, it is essential to advance the engineers’ scheduling capability to a more sophisticated maturity level to ensure that project schedules are used as an effective management tool.

    ACKNOWLEDGEMENTS i ABSTRACT iii TABLE OF CONTENTS v LIST OF ABBREBIATIONS viii LIST OF TABLES ix LIST OF FIGURES x CHAPTER 1 INTRODUCTION 1 1.1 Background and Overview 1 1.2 Motivation of the Research 3 1.3 Objectives and Scope 4 1.4 Research Method and Process 5 1.5 Thesis Structure 7 CHAPTER 2 LITERATURE REVIEW 9 2.1 Scheduling Knowledge 9 2.1.1 Scheduling Theory 10 2.1.2 Scheduling Practices 12 2.1.3 Project Management Process Maturity (PM)2 13 2.2 Project Complexity 14 2.2.1 Project Complexity Drivers 15 2.2.2 Level of Sophistication of the Owners 16 2.2.3 Importance of Project Complexity to Project Management Process 17 2.3 Schedule Specifications 18 2.3.1 Development of the Schedule Specifications 19 2.3.2 Complexity in Schedule Specifications 20 2.3.3 Schedule Specifications and Practices Evolution 21 CHAPTER 3 SCHEDULE PROBLEMS 23 3.1 Reasons and Consequences 23 3.2 Objective Schedule Problems 26 3.2.1 Inadequate schedule specifications and contract requirements 26 3.2.2 Project complexity 28 3.3 Subjective Schedule Problems and Consequences on Performance 29 3.3.1 Lack of engineers’ scheduling capabilities 29 3.3.2 Consequences on Project Performance 31 CHAPTER 4 SCHEDULING KNOWLEDGE AND CAPABILITIES 35 4.1 Core Scheduling Knowledge 35 4.1.1 Scheduling Methods 36 4.1.2 Schedule Delay Analysis Methods 38 4.1.3 Development of Scheduling Practices 46 4.2 Requirements for Schedulers 47 4.2.1 Major scheduling capabilities 49 4.2.2 Scheduler’s Duties 54 4.2.3 Scheduler’s Training and Professional Development 55 CHAPTER 5 METHODOLOGY, ANALYSIS AND RESULTS 57 5.1 Questionnaire Design 57 5.1.1 Design Background 57 5.1.2 Questionnaire Survey 61 5.2 Questionnaire Results 62 5.2.1 General Information 62 5.2.2 Scheduling Methods 68 5.2.3 Schedule Components 71 5.2.4 Schedule Specifications 76 5.2.5 Schedule Delay Analysis Methods 79 5.2.6 Analysis Based on Scheduling Work 81 CHAPTER 6 CONCLUSIONS AND SUGGESTIONS 95 6.1 Conclusions 95 6.2 Suggestions for Future Research 98 References 99 APPENDICES 103 Appendix A: Questionnaire (English Version) 103 Appendix B: On-line Questionnaire (Spanish Version) 108 Appendix C: On-line Questionnaire (Chinese Version) 113

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