Using shims at 3rd points under a tilt-up panel can help to

• A. increase the tilt angle
• B. shorten the lifting time
• C. reduce the pressure on the footing
• D. improve paint finish

Answer: (C)

Distributing the lifting load across multiple bearing points is the key idea. When a tilt-up panel is raised, the base often contacts the footing at limited points, which can create high local pressure that risks footing movement or cracking. Placing shims at the third points along the base adds intermediate support positions, spreading the load more evenly and reducing peak bearing pressure on the footing. This helps keep the panel stable during the lift and protects the footing from excessive stress. While shims can also assist in keeping the panel level, their primary benefit here is reducing footing pressure. They don’t inherently change the tilt angle, shorten lifting time, or affect the paint finish.