A Unified Assessment Approach for Urban Infrastructure Sustainability and Resilience

Table 7

Category distribution of respondents.

Basis of classification	Classification criterion	Frequency	Percentage (%)
Type of work	Design	11	20.8
	Construct	25	47.2
	Operation	17	32.1
Work experience	Below 5 years	7	13.2
	6–10 years	11	20.8
	11–15 years	14	26.4
	Above 16 years	21	39.6
Number of involving projects	Below 2	5	9.4
	3–5	11	20.8
	6–10	13	24.5
	Above 11	24	45.3