Sample distribution

Sample size

Percentage (%)

Work experience

1 - 3 years

57

24

4 - 6 years

83

35

7 - 10 years

58

24

Above 10 years

40

17

Project participants

Owner

44

18

Contractor

58

24

Subcontractor

37

16

Supervising unit

39

16

Survey and design unit

58

24