Quality Risk Evaluation of Urban Rail Transit Construction Based on AHP–FCE Method

Table 3

Reliability analysis based on Cronbach’s α coefficient for the indicators.

C	Cronbach α	C	Cronbach α	C	Cronbach α	C	Cronbach α
Technical level of construction personnel C11	0.707	Maintenance of machinery and equipment C22	0.833	Stockpiling of construction materials C33	0.711	Production of construction site samples C44	0.725
Specification of construction personnel C12	0.812	Failure rate of machinery and equipment C23	0.761	Waterproofing of construction materials C34	0.901	Geology of the construction site C51	0.783
Management level of managers C13	0.760	Level of monitoring of equipment C24	0.739	Soundness of programming C41	0.930	Buildings around the construction site C52	0.710
Safety awareness for construction workers C14	0.753	Quality of materials on construction sites C31	0.863	Feasibility of construction handover C42	0.839	Undercutting of municipal pipelines C53	0.828
Performance of machinery and equipment C21	0.791	Availability of construction materials C32	0.782	Stability of formwork supports C43	0.759	Environment of the construction site C54	0.804
Cronbach α: 0.789 > 0.7

Note: Cronbach α (α = 0.9: excellent; α = 0.8: good; α = 0.7: acceptable; α = 0.6: questionable; α = 0.5: poor; α < 0.5: unacceptable) [34, 35].