What is the purpose and method of installing lateral and knee braces?

• A. They prevent buckling; knee braces connected in the middle of the pipe brace and back to the panel or floor slab; lateral bracing should be continuous
• B. They provide electrical grounding
• C. They add extra weight to the system
• D. They are decorative

Answer: (A)

Temporary bracing during tilt-up is used to keep wall panels from buckling or tipping while they are lifted into place and before the floor slab and permanent framing provide stability. Knee braces are diagonal supports that connect in the middle of a pipe brace back to the panel or the slab, forming a triangular restraint that prevents rotation and lateral movement as the panel is tilted into position. Lateral bracing runs horizontally between panels or to a stable element, and it should be continuous so the load is shared and the panel stays plumb along its height and across bays. Together, these braces give the temporary stability needed during erection until permanent connections are in place. They aren’t meant for electrical grounding, adding weight, or decoration.