Systematic Approach of TOPSIS Decision-Making for Construction Method Based on Risk Reduction Feedback of Extended QFD-FMEA

Table 4

The preference values of each construction method.

Main category		Economics	Environmental				Safety	Weighted sum	Total value	Preference ranking
Characteristic details		Low cost	Low noise	Low dust	Waste reduction	CO2 reduction	Safety
Weight		9	7	6	10	8	10
A001	Normalized score	5	3	4	3	5	3	190	7.60	2
	Weighted	45	21	24	30	40	30
A002	Normalized score	4	3	3	5	4	3	187	7.48	3
	Weighted	36	21	18	50	32	30
A003	Normalized score	3	4	4	5	3	2	173	6.92	4
	Weighted	27	28	24	50	24	20
A004	Normalized score	3	5	5	4	4	3	194	7.76	1
	Weighted	27	35	30	40	32	30
A005	Normalized score	2	5	3	1	4	3	143	5.72	5
	Weighted	18	35	18	10	32	30

: 10-point scale weights.