A panel release from the crane should occur under which condition?

• A. Before any braces are attached
• B. After the panel is braced and plumb
• C. After the panel is weatherproofed
• D. After the foundation cures

Answer: (B)

Before a panel is released from the crane, it must be braced and plumb. Bracing provides temporary lateral support so the panel can’t move or tip due to crane sway, wind, or its own weight. Plumb means the panel is perfectly vertical and aligned with the rest of the wall, ensuring accurate joints and overall stability as it’s lowered into place. When these conditions are met, the crane can safely release the hook because the panel’s weight and loads are carried through the braces to stable supports rather than being left to fester in an unrestrained state. Releasing earlier risks tipping or misalignment, while weatherproofing or foundation curing aren’t the factors that determine when release should occur.