How many inches should a panel be within plumb prior to releasing the rigging?

• A. 2 inches
• B. 4 inches
• C. 6 inches
• D. 8 inches

Answer: (B)

Bringing the panel within a close, practical tolerance of plumb before releasing the rigging is about control and stability. When a tilt-up panel is nearly vertical, small misalignments can cause it to shift, twist, or buckle if the rigging is released too early. By ensuring the panel is kept very close to true plumb, the temporary bracing and supports can reliably hold the load as the rigging is removed, allowing the team to guide the panel safely into its final position. This minimizes the risk of sudden movement, cracking, or other damage and sets up a stable transition from temporary to permanent support. The exact amount of tolerance is defined by the project specs, but the principle is clear: release only when the panel is nicely aligned with plumb to maintain safety and control.