The ends of wall ties shall be embedded in mortar joints with not less than how much mortar coverage from the exposed face?

• A. 5/8 inch
• B. 3/8 inch
• C. 1/4 inch
• D. 1/2 inch

Answer: (A)

Wall ties must be properly protected and anchored by adequate mortar encasement. The ends of wall ties should be embedded in mortar joints with at least 5/8 inch of mortar coverage from the exposed face. This minimum ensures the tie is fully encased, protecting the steel from moisture and corrosion and providing enough mortar contact to transfer loads between the wall wythes. If the coverage were less, the tie would be more exposed to weather and weaker in transfer capability, compromising the wall’s durability and stability. The other options fall short of providing the needed protection and bond, which is why 5/8 inch is the required minimum.