Final answer:
The minimum thickness for masonry bearing walls over one story high typically is 8 inches, although local building codes may specify different requirements. Builders should consult local codes for exact specifications, which may vary based on several factors including building use and geographic location.
Step-by-step explanation:
The minimum thickness of masonry bearing walls that are more than one story high is regulated by local building codes, which can vary depending on the jurisdiction, seismic activity, building materials, and other factors. However, a common minimum thickness for a masonry bearing wall in many codes is 8 inches. This measurement is considered a standard for ensuring the structural integrity of the wall to support the loads imposed upon it over multiple stories, particularly for residential construction.
One must always consult the specific building code relevant to their area for the exact requirement. This thickness controls the wall's ability to bear loads and resist lateral forces such as wind and seismic stresses. Key factors when considering wall thickness include the type of masonry units being used (brick, concrete blocks, etc.), the height and use of the building, and the presence of structural reinforcement.