What is a bond beam and where is it used in concrete structures?

• A. A decorative trim at the top of a wall.
• B. A continuous tie across walls to resist lateral loads and connect structure; used in masonry or framed walls.
• C. A type of waterproofing barrier.
• D. A method for sealing joints.

Answer: (B)

Bond beams are continuous reinforced concrete elements that run across the tops of walls to tie them together and resist lateral forces from wind or seismic activity. They create a rigid connection between walls and provide a stable seat for roof or floor framing, helping the entire wall system act as one unit. This is why bond beams are used in masonry wall systems and in framed walls that need a continuous tie across openings or between wall segments. They’re not decorative trim, not a waterproofing barrier, and not a method for sealing joints.