Quantitative Analysis of the Sources of Construction Waste

Table 10

Reliability statistics for the multi-item scales of the sources of construction waste.

	Cronbach’s alpha if item deleted (severity)	Cronbach’s alpha if item deleted (frequency)
Data error	0.772	0.612
Design	0.774	0.623
Handling	0.757	0.593
Operation	0.777	0.621
Weather	0.765	0.601
Vandalism	0.786	0.622
Material misplacement	0.769	0.611
Residual	0.818	0.626
Others	0.772	0.577
	Cronbach’s alpha
Reliability coefficient for severity	0.797
Reliability coefficient for frequency	0.638