Descriptive statistics of the causes of rework in sustainable buildings
| Cause | Std. deviation | Index |
|---|---|---|
| Incomplete drawings | 22.9 | 81.7 |
| Inadequate specifications | 21.8 | 81.0 |
| Variation order | 24.0 | 80.3 |
| Inadequate funding | 22.6 | 80.3 |
| Competency of the site operatives | 24.2 | 79.0 |
| Poor communication between the site and the company’s office | 21.2 | 78.7 |
| Competency of the construction manager | 22.9 | 78.3 |
| Competency of the project manager | 21.9 | 78.3 |
| Poor supply chain management plan | 20.5 | 78.0 |
| Non-adherence to green/sustainable rating tools | 22.3 | 77.3 |
| Lack of sustainability plan | 21.2 | 77.0 |
| Poor quality management framework | 23.1 | 76.7 |
| Poor site management plan | 20.0 | 76.3 |
| Poor construction schedule | 21.7 | 76.0 |
| Poor coordination of contract documents | 21.8 | 75.7 |
| Poor procurement management plan | 18.9 | 75.0 |
| The lack of adequate plants and equipment | 21.3 | 75.0 |
| Lack of information on the nature of the site | 21.0 | 73.7 |
| Poor quality of materials | 20.9 | 73.3 |
| Insufficient information on government policy | 22.8 | 72.7 |
| Complexity of designs | 20.3 | 72.0 |
| Poor payment plan | 20.6 | 70.7 |
| Poor health and safety frameworks | 18.6 | 70.0 |
| Poor weather | 20.9 | 66.7 |
| Cause | Std. deviation | Index |
|---|---|---|
| Incomplete drawings | 22.9 | 81.7 |
| Inadequate specifications | 21.8 | 81.0 |
| Variation order | 24.0 | 80.3 |
| Inadequate funding | 22.6 | 80.3 |
| Competency of the site operatives | 24.2 | 79.0 |
| Poor communication between the site and the company’s office | 21.2 | 78.7 |
| Competency of the construction manager | 22.9 | 78.3 |
| Competency of the project manager | 21.9 | 78.3 |
| Poor supply chain management plan | 20.5 | 78.0 |
| Non-adherence to green/sustainable rating tools | 22.3 | 77.3 |
| Lack of sustainability plan | 21.2 | 77.0 |
| Poor quality management framework | 23.1 | 76.7 |
| Poor site management plan | 20.0 | 76.3 |
| Poor construction schedule | 21.7 | 76.0 |
| Poor coordination of contract documents | 21.8 | 75.7 |
| Poor procurement management plan | 18.9 | 75.0 |
| The lack of adequate plants and equipment | 21.3 | 75.0 |
| Lack of information on the nature of the site | 21.0 | 73.7 |
| Poor quality of materials | 20.9 | 73.3 |
| Insufficient information on government policy | 22.8 | 72.7 |
| Complexity of designs | 20.3 | 72.0 |
| Poor payment plan | 20.6 | 70.7 |
| Poor health and safety frameworks | 18.6 | 70.0 |
| Poor weather | 20.9 | 66.7 |
Source(s): Table by author