Which feature is designed to accommodate movement between joined sections or floor levels?

• A. Control joints
• B. Weep holes
• C. Expansion joints
• D. Veneer ties

Answer: (C)

Expansion joints are gaps placed between joined sections or floor levels to absorb movement that happens from temperature changes, moisture, settlement, or other forces. They let slabs and walls expand and contract independently without transferring stress, which prevents cracking and damage. The gap is filled with a flexible sealant and a backer material so the joint can move while keeping out water and debris. This makes them the right choice for accommodating movement between sections. By contrast, control joints are designed to control where cracks form, weep holes provide drainage, and veneer ties simply secure veneer to backing without allowing significant movement.