1. Wind loading on unbraced girders
2. Final composite dead load
3. Fatigue demand
4. Wearing surface weight

Explanation

Explanation:
During erection, girders are not yet composite and may lack full lateral bracing. Wind acting on slender, unbraced girders commonly governs temporary stability.

Learning Resources:
• CSA S6 – Construction stage load provisions
• AISC Design Guide 10 – Erection Bracing
• CHBDC: https://spannovationschool.thinkific.com/courses/CSCBD1