Causes of Delay in the Construction Projects of Subway Tunnel

Table 10

Ranking of the causes from external factors.

Cause	View of consultants		View of contractors		Combined view
	Rank	Severity index	Rank	Severity index	Rank	Severity index
National policy for subway tunnel construction	1	73.81	1	76.52	1	75.17
Award the project to lowest bid price	2	71.16	2	72.05	2	71.61
Limited construction area	4	62.93	3	67.34	3	65.14
Lag in technology	3	65.50	4	63.21	4	64.36
Changing of bankers’ policy for loans	5	52.72	6	50.37	5	51.55
Inconvenient site access	6	47.06	5	52.30	6	49.68
Disturbance to public activities	7	44.25	7	46.19	7	45.22