What reinforcement is typically used in block walls to resist bearing loads?

• A. Wire mesh
• B. Wood studs
• C. Steel bars
• D. Plastic mesh

Answer: (A)

Block walls that carry bearing loads must have reinforcement that ties the masonry together and spreads the weight so cracks don’t form along the wall. A welded wire fabric grid placed in the mortar joints or embedded in grout between blocks provides a continuous tensile network that holds the units in alignment and helps transfer vertical stress across the wall. This grid is practical and effective for distributing load over a wide area, especially in hollow-core CMU walls where grout can encase the mesh to lock the masonry together. Wood studs are used in framed walls, not bearing block walls; plastic mesh doesn’t offer the strength needed for bearing resistance; while steel bars (rebar) are used in reinforced masonry, the grid-like wire mesh is the typical reinforcement for many block-wall bearing applications because it provides good distribution of load with simpler installation.