Table 7. RII and ranking of consultant-related factors.

	Delay factors	RII	Rank
Q17	Delay in inspections and completed work approvals.	0.6466	6
Q18	Delay in material and payment approval.	0.6994	1
Q19	Errors in contract documents.	0.6123	8
Q20	Constant design changes by the consultant	0.6736	4
Q21	Delay in preparing and approving drawings and design documents.	0.6896	2
Q22	Lack of experienced consultants.	0.6626	5
Q23	Errors in design documents.	0.6393	7
Q24	Poor coordination and communication.	0.6773	3

Source: Authors’ calculations.