Toward a Stakeholder Perspective on Safety Risk Factors of Metro Construction: A Social Network Analysis

Table 5

Metro construction safety risk factors.

Classification	Code	Name
E	E1	Bad weather
	E2	Unknown geological conditions
	E3	Underground pipe breaks
H	H1	Lack of contingency plans
	H2	Violations by operatives
	H3	Inadvertent handling by operatives
	H4	Lack of safety precautions
	H5	Ineffective supervision
	H6	Unclear construction site markings
	H7	Inappropriate communication with other units
	H8	Negligent site management
	H9	Inaction by site managers
	H10	Inadequate qualification levels of operatives
MAC	MAC1	Mechanical breakdown
MAT	MAT1	Falling material from high places
	MAT2	Missing drawings
	MAT3	Insufficient awareness of material properties
T	T1	Lack of a dedicated construction programme
	T2	Lack of detailed exploration information
	T3	Poor construction workmanship
	T4	Missing construction permits
	T5	Incorrect construction procedure