New Steel Beam is Undersized and Sags Causing a Large Crack in an Exterior Brick Wall Synopsis A 20 foot wide opening is made in an exterior wall for a new addition. The steel beam is undersized and the exterior wall cracks. Main Report General Information Introduction Displacement Damage and Jacking Procedures Steel Beam, End Supports and Column Laminated Beam and Supports Miscellaneous Conclusion Appendixes Appendix A: Photographs | Structural Inspections | Residential & Commercial Services |