Research Article
Simulation-Based Fuzzy Logic Approach to Assessing the Effect of Project Quality Management on Construction Performance
Table 10
Settings of the scenarios and their corresponding simulation outputs.
| Scenarios → | 1 | 2 | 3 |
| Input settings (Performance Levels of the PQM practices) | Expediting | Stable (60%) | Stable (60%) | Stable (60%) | Supplier qualification | Reactive (38%) | Stable (60%) | Stable (60%) | Int. and ext. examinations | Reactive (38%) | Stable (60%) | Stable (60%) | Change and communications | Reactive (38%) | Stable (60%) | Stable (60%) | Operability and value review | Reactive (38%) | Stable (60%) | Reactive (38%) | Constructability review | Reactive (38%) | Stable (60%) | Stable (60%) | Personnel qualification | Stable (60%) | Stable (60%) | Continual (76%) | Risk management | Reactive (38%) | Stable (60%) | Reactive (38%) | Safety management | Stable (60%) | Stable (60%) | Continual (76%) |
| Quality levels of the project requirements () | Material supply | Poor | Good | Good | Design information | Average | Good | Very good | Work conditions | Good | Very good | Very good |
| Statistical parameters of the number of disruptions () | Excavation | | 2.47 | 1.93 | 1.42 | | 1.11 | 0.81 | 1.07 | Bedding | | 2.22 | 1.45 | 0.95 | | 1.11 | 0.50 | 0.78 | Pipe installation | | 2.72 | 1.94 | 1.44 | | 1.35 | 0.80 | 1.06 | Backfilling | | 2.22 | 1.46 | 0.94 | | 1.11 | 0.50 | 0.78 |
| Statistical parameters of the duration of delays () | Excavation | | 168.84 | 45.57 | 21.43 | | 85.58 | 46.00 | 28.75 | Bedding | | 251.19 | 176.10 | 161.68 | | 114.00 | 84.99 | 87.56 | Pipe installation | | 164.90 | 51.89 | 41.63 | | 85.95 | 48.65 | 47.27 | Backfilling | | 164.90 | 87.69 | 56.64 | | 85.95 | 29.91 | 46.97 |
| Outputs and output analysis | MPE (meter/hour) | 2.53 | 3.47 | 3.70 | Productivity increase | — | 37.15% | 46.24% | TIPL | — | 132% | 120% | RPI | — | 0.28 | 0.39 |
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MPE: mean productivity estimates; TIPL: total increase of the performance levels; RPI: relative productivity improvement.
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