The minimum panel size for maximum economy is influenced by which factors?

• A. Shape of the building footprint and height of the wall panels
• B. Material color and finish
• C. Crane type
• D. Temperature

Answer: (A)

In tilt-up work, the most economical panel sizes come from how many panels you need and how easily you can cast and lift them. The shape of the building footprint drives how walls wrap around the plan and how long each panel can be while still being practical to cast and handle. A regular, straightforward footprint allows larger, repetitive panels, which reduces formwork changes, joints, crane cycles, and handling time, lowering overall cost. The height of the wall panels affects the length and weight of a single panel, influencing formwork size, crane capacity planning, and the effort needed to place and stabilize the panel. When panel dimensions are aligned with these factors—large, repeatable panels that fit the site layout—you achieve the greatest economy.

Color and finish don’t change panel sizing, temperature mainly affects curing and finish timing rather than the number and size of panels, and crane type is a constraint but not the primary driver of economical panel sizing compared to footprint shape and panel height.