Final answer:
The primary purpose of joint reinforcement in a CMU wall is to provide reinforcement and stability by connecting the concrete masonry units together and distributing applied loads more uniformly. It also increases the load-bearing capacity of the wall.
Step-by-step explanation:
The primary purpose of joint reinforcement in a CMU wall is to provide reinforcement and stability to the wall or structure. Joint reinforcement, typically made of steel, is installed within the mortar joints of the concrete masonry units (CMUs) to resist lateral forces such as wind loads and seismic activity.
By connecting adjacent CMUs together, joint reinforcement helps distribute the applied loads more uniformly and prevents the formation of cracks in the wall. It also enhances the overall structural integrity of the wall, making it more resistant to deformation and failure.
Furthermore, joint reinforcement can help increase the load-bearing capacity of the wall, allowing it to support heavier loads or span larger distances without excessive deflection.