Expert Opinion on the Key Influencing Factors of Cost Control for Water Engineering Contractors
Abstract
:1. Introduction
2. Establish the Influencing Factors Set for the Cost Control of Water Conservancy Projects
3. Research Methods
4. Empirical Study
4.1. Questionnaire Design and Data Collecting
4.1.1. Questionnaire Design
- (1)
- Survey background: The questionnaire’s respondents are mainly experts in project management. To draw their attention and interest to gain cooperation, the survey’s purpose and significance are elaborated in this part.
- (2)
- Information about respondents: Respondents of the survey are mainly experts of project management, whose titles reflect their level of education and experience, to some extent. While judging the factors affecting the design of the project transaction pattern and the importance of these factors, different respondents have different decisions based on their project experience and the properties of their institutions [52,53]. Thus, information about the respondents is included in this survey to know the reasonability of the respondents, and whether their understanding of the influencing factors vary from group to group, such as the project clients, intermediaries and contractors.
- (3)
- Influencing factors of project’s cost control: The purpose of this survey is to examine the influencing factors of project cost control and the importance of these factors. The influencing factors are numerous, and most of them are qualitative indicators involving the respondents’ mental activities, such as their attitudes and opinions. In this survey, the influencing factors are divided into four aspects, which are decomposed into several sub-issues.
4.1.2. Sample Collecting
4.2. Factor Analysis of Cost Control
4.2.1. Data Analysis
4.2.2. Determining the Number of Main Factor
4.2.3. Factors Extraction and Nomination
5. Components’ Correlation Analysis
5.1. Analysis of the Factor of Client, Designer and Supervision
5.2. Correlation Analysis of the Factor of Subcontractor
5.3. Correlation Analysis of the Factor of Construction Safety and Environment
5.4. Correlation Analysis of Construction Economy and Policy
6. Conclusions and Recommendation
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Number | Index | Number | Index |
---|---|---|---|
1 | Unreasonable demand from the supervision engineer (X1) | 11 | Land requisition and demolishing/immigrant (X11) |
2 | Unfair standpoint from the supervision engineer (X2) | 12 | Inadequate of the subcontractor’s mobilization capability (X12) |
3 | Increased price of construction material (X3) | 13 | Geology condition (X13) |
4 | The owner’s unreasonable demand (X4) | 14 | Security incidents (X14) |
5 | Unclear of the design drawings (X5) | 15 | Inadequate of the subcontractor’s construction capability (X15) |
6 | Lack of construction material (X6) | 16 | National and local’s laws and regulations (X16) |
7 | Delayed decision making from supervision engineer (X7) | 17 | Inadequate of the subcontractor’s management capability (X17) |
8 | Field condition of engineering construction (X8) | 18 | Project completion date limits (X18) |
9 | Bad construction dispatching (X9) | 19 | Design defect (X19) |
10 | Unclear construction scale definition (X10) | 20 | Insufficient funds from sub-contractors (X20) |
Standard of Condition | Sample | Result | |
---|---|---|---|
Proportion of valid questionnaire and items | 5:1 | 5.6:1 | consistent |
Recycled valid questionnaires | 100 | 113 | consistent |
Kaiser-Meyer-Olkin | >0.7 | 0.818 | consistent |
Bartlett’s test of Sphericity | <0.05 | 0.000 | consistent |
Number | Initial Characteristic Value | Square and Extraction of Load | Axis and Load | ||||||
---|---|---|---|---|---|---|---|---|---|
Total | Percentage of Variance | Percentage of Accumulation | Total | Percentage of Variance | Percentage of Accumulation | Total | Percentage of Variance | Percentage of Accumulation | |
1 | 6.104 | 30.520 | 30.520 | 6.104 | 30.520 | 30.520 | 4.047 | 20.237 | 20.237 |
2 | 2.922 | 14.610 | 45.130 | 2.922 | 14.610 | 45.130 | 3.192 | 15.960 | 36.198 |
3 | 1.648 | 8.239 | 53.369 | 1.648 | 8.239 | 53.369 | 2.290 | 11.449 | 47.647 |
4 | 1.513 | 7.563 | 60.932 | 1.513 | 7.563 | 60.932 | 2.153 | 10.764 | 58.410 |
5 | 1.135 | 5.676 | 66.608 | 1.135 | 5.676 | 66.608 | 1.640 | 8.198 | 66.608 |
6 | 0.873 | 4.365 | 70.973 | ||||||
7 | 0.807 | 4.035 | 75.008 | ||||||
8 | 0.740 | 3.701 | 78.709 | ||||||
9 | 0.612 | 3.061 | 81.770 | ||||||
10 | 0.571 | 2.855 | 84.624 | ||||||
11 | 0.524 | 2.621 | 87.245 | ||||||
12 | 0.421 | 2.104 | 89.349 | ||||||
13 | 0.399 | 1.995 | 91.244 | ||||||
14 | 0.363 | 1.814 | 93.158 | ||||||
15 | 0.327 | 1.633 | 94.791 | ||||||
16 | 0.313 | 1.567 | 96.358 | ||||||
17 | 0.227 | 1.135 | 97.493 | ||||||
18 | 0.197 | 0.985 | 98.478 | ||||||
19 | 0.167 | 0.836 | 99.314 | ||||||
20 | 0.137 | 0.686 | 100.000 |
Index | Main Components | |||
---|---|---|---|---|
F1 | F2 | F3 | F4 | |
Unclear Definition of Construction Scope | 0.750 | −0.038 | 0.257 | 0.116 |
Unreasonable Demands from Supervising Engineer | 0.742 | 0.193 | 0.218 | 0.094 |
Lack of Fairness for Supervising Engineer’s Position | 0.725 | 0.219 | 0.212 | 0.010 |
Unclear Blueprints | 0.701 | −0.119 | 0.169 | 0.045 |
Design Error | 0.695 | 0.089 | 0.111 | 0.186 |
Clients’ Unreasonable Demands | 0.669 | 0.119 | 0.202 | 0.117 |
Supervising Engineer’s Slow Decision-making | 0.653 | 0.135 | 0.106 | 0.386 |
Subcontractor’s Insufficiency Mobilization Ability | −0.002 | 0.899 | 0.083 | 0.051 |
Subcontractor’s Insufficiency Construction Ability | 0.097 | 0.897 | 0.102 | 0.090 |
Subcontractor’s Insufficiency Management Ability | 0.036 | 0.894 | 0.079 | 0.152 |
Subcontractor’s Insufficiency Fund | 0.231 | 0.740 | −0.107 | −0.008 |
Conditions of Construction Site | 0.208 | 0.016 | 0.799 | 0.168 |
Land demolition/internal migration | 0.312 | −0.050 | 0.733 | 0.130 |
Safety Incident | 0.318 | 0.201 | 0.605 | −0.122 |
Poor Construction Scheduling inside the Company | 0.263 | 0.094 | 0.515 | 0.500 |
Geological Condition | 0.198 | −0.065 | 0.051 | 0.278 |
Rise in Price of Construction Material | −0.015 | 0.140 | 0.040 | 0.841 |
Shortage of Construction Material | 0.289 | 0.098 | −0.046 | 0.771 |
Limitation of Date for Construction’s Completion | 0.198 | −0.047 | 0.353 | 0.587 |
National and Local Regulations | 0.005 | −0.078 | 0.019 | 0.390 |
Major Factors | F1 | F2 | F3 | F4 |
---|---|---|---|---|
Characteristic values | 5.961 | 2.824 | 1.635 | 1.912 |
Total number of factors | 7 | 4 | 5 | 4 |
Owner Factor | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
---|---|---|---|---|---|---|---|
Client’s unreasonable demands | 1 | ||||||
Unclear construction blueprint | 0.427 ** | 1 | |||||
Unclear construction scope | 0.473 ** | 0.610 ** | 1 | ||||
Design error | 0.453 ** | 0.441 ** | 0.453 ** | 1 | |||
Supervision institution’s unreasonable demands | 0.498 ** | 0.468 ** | 0.478 ** | 0.514 ** | 1 | ||
Unfairness of supervision institution’s position | 0.445 ** | 0.350 ** | 0.535 ** | 0.471 ** | 0.690 ** | 1 | |
Supervising engineer’s slow decision-making | 0.452 ** | 0.313 ** | 0.543 ** | 0.482 ** | 0.526 ** | 0.582 ** | 1 |
Components of Subcontractor | 1 | 2 | 3 | 4 |
---|---|---|---|---|
Subcontractor’s inefficient construction ability | 1 | |||
Subcontractor’s inefficient mobilization ability | 0.783 ** | 1 | ||
Subcontractor’s inefficient management ability | 0.775 ** | 0.803 ** | 1 | |
Subcontractor’s shortage of funds | 0.583 ** | 0.594 ** | 0.553 ** | 1 |
Construction Safety and Environmental Factors | 1 | 2 | 3 | 4 | 5 |
---|---|---|---|---|---|
Safety accident | 1 | ||||
Condition of construction site | 0.468 ** | 1 | |||
Land demolition/internal | 0.376 ** | 0.542 ** | 1 | ||
poor construction scheduling inside the company | 0.189 | 0.480 ** | 0.457 ** | 1 | |
Geological conditions | 0.539 ** | 0.528 ** | 0.375 ** | 0.318 ** | 1 |
Components of Construction Economy and Policy | 1 | 2 | 3 | 4 |
---|---|---|---|---|
Rise in price of construction materials | 1 | |||
Shortage of construction materials | 0.598 ** | 1 | ||
National and local policy | 0.585 ** | 0.352 ** | 1 | |
Limitation of construction’s completion | 0.347 ** | 0.364 ** | 0.579 ** | 1 |
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Ding, Z.; Liu, X.; Xue, Z.; Li, X. Expert Opinion on the Key Influencing Factors of Cost Control for Water Engineering Contractors. Sustainability 2023, 15, 6963. https://doi.org/10.3390/su15086963
Ding Z, Liu X, Xue Z, Li X. Expert Opinion on the Key Influencing Factors of Cost Control for Water Engineering Contractors. Sustainability. 2023; 15(8):6963. https://doi.org/10.3390/su15086963
Chicago/Turabian StyleDing, Zhenhan, Xun Liu, Zhiyuan Xue, and Xiaobo Li. 2023. "Expert Opinion on the Key Influencing Factors of Cost Control for Water Engineering Contractors" Sustainability 15, no. 8: 6963. https://doi.org/10.3390/su15086963