Pre-engineered metal building systems account for a significant share of 1- and 2-story, nonresidential construction. A growing number of manufactured metal buildings are incorporating masonry to take advantage of its widely acknowledged benefits. Masonry contractors and masonry materials manufacturers can gain extra work and extra profits by recognizing this potential market. WHY ADD MASONRY? The metal building system's major drawback is its sheet-metal walls. Though metal walls are acceptable for some light-duty, utilitarian buildings, they're unsuitable for many other buildings. Masonry walls offer several advantages: durability, firesafety, and aesthetics. FIRST CONSIDER ALL-MASONRY Architects and their clients who want all the benefits of masonry in a low-rise commercial or industrial building should first consider using load-bearing masonry for the structure.