1. Govern girder flange design
2. Reduce shear demand
3. Eliminate stability concerns
4. Be smaller than final service moments

Explanation

Explanation:
Cantilever stages introduce temporary negative bending. The compression flange may be unbraced, increasing lateral torsional buckling risk during launching.

Learning Resources:
• CSA S6 – Construction stage provisions
• Rosignoli, Bridge Launching
• CHBDC: https://spannovationschool.thinkific.com/courses/CSCBD1