Strongbacks are used in tilt-up construction for which condition?

• A. For deep lintels
• B. For shallow openings
• C. Only for brick panels
• D. Only for temporary panels

Answer: (A)

In tilt-up construction, strongbacks are temporary supports used to stabilize openings that carry a heavy load above them. When an opening is deep, the portion of the wall above it exerts a larger bending load, which can cause the lintel area to sag or distort during pouring and curing. Strongbacks cross the opening to transfer those forces to the surrounding wall, effectively giving the deep lintel temporary support until the panel is raised and the permanent structural path is in place. Once the wall is erected and braced, the strongbacks are removed. For shallow openings, brick panels, or temporary panels, this extra bracing isn’t required.