Research Article
Development of an Efficient Steel Beam Section for Modular Construction Based on Six-Sigma
Table 9
Selection of the optimal design using the Pugh matrix methodology.
| Better + Same S Worse − | Reference | Concept 1 | Concept 2 | Concept 3 | Concept 4 | Concept 5 | Concept 6 | Concept 7 |
| Key criteria | Weight | | | | | | | | | Manufacturing cost | 5 | S | + | + | S | S | + | + | − | Fire proofing cost | 4 | S | − | − | − | − | − | − | − | Steel quantity | 4 | S | + | + | + | + | − | − | + | Easy fabrication | 3 | S | + | + | + | + | + | + | + | New investment | 5 | S | − | − | − | − | + | + | − | Compatibility | 4 | S | − | + | − | + | − | + | − | Creativity | 3 | S | + | + | + | + | S | S | S |
| Sum of + | 0 | 4 | 5 | 3 | 4 | 3 | 4 | 2 | Sum of − | 0 | 3 | 2 | 3 | 2 | 3 | 2 | 4 | Sum of S | 7 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | Weighted sum of + | 0 | 15 | 19 | 10 | 14 | 13 | 17 | 7 | Weighted sum of − | 0 | 13 | 9 | 13 | 9 | 12 | 8 | 18 |
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