Masonry must be supported on wood girders:

The statement that masonry must be supported on wood girders is false because masonry walls and structures require a strong and stable support system, which is typically provided by concrete or steel components, rather than wood. In construction, masonry is generally placed on a solid foundation, like concrete footings or concrete walls, to ensure durability and structural integrity.

Wood girders may not provide the necessary strength to support heavy masonry materials, especially under loads that occur over time. Additionally, wood can be susceptible to moisture decay, pests, and other environmental factors that could compromise the stability of the masonry structure. Therefore, it is essential to use materials that offer the requisite strength and support for masonry units, thus highlighting the inaccuracy of the statement.