Final answer:
A bond beam in a masonry bearing wall building is a horizontal reinforced concrete element that distributes loads and prevents the walls from collapsing.
Step-by-step explanation:
A bond beam in a masonry bearing wall building must be a horizontal reinforced concrete element that runs continuously along the top of the wall. It helps to distribute the loads from the roof or upper floors to the supporting walls and piers. The bond beam acts as a tie to prevent the walls from collapsing under the loads.