Table 1.

Expert's insights for questionnaire.

Expert	Insights
Expert #1 (Academics)	•Suggest adding “cost” item to the “designer,” “owner,” “tools,” and “contract” variables, considering these variables are highly related to safety cost. •Suggest adding “indemnity assurance” item to “contract” variable, considering the importance of conformity of safety output with contract document.
Expert #2 (Professional Contractor)	•Recommend adding “attitude” item to the “designer” and “owner” variables, considering the importance of compliance of those stakeholders to DfS implementation.
Expert #3 (Professional Consultant)	•Propose Building Information Modeling (BIM) usage as part of “technology” item in “tools” variable.