What is the minimum gauge of sheet metal veneer wall ties?

• A. 20 gauge
• B. 22 gauge
• C. 24 gauge
• D. 26 gauge

Answer: (B)

The correct choice for the minimum gauge of sheet metal veneer wall ties is 22 gauge. This standard is typically established because it provides a balance between strength and durability while ensuring that the ties can support the veneer adequately over time. The gauge indicates the thickness of the metal, where a lower number represents a thicker material.

Using 22 gauge sheet metal ensures that the wall ties can resist bending and deformation under the stresses imposed by both the weight of the veneer and environmental factors. Choosing a gauge that is too high, such as 24 or 26, could compromise the structural integrity of the wall ties. Meanwhile, while 20 gauge is thicker and stronger, it is often not necessary for typical applications, which may lead to increased costs without a corresponding benefit in performance. Therefore, 22 gauge is deemed the industry standard for balance between weight, performance, and cost.