Wall ties should be placed how far from the edge of a masonry unit?

Wall ties should be placed how far from the edge of a masonry unit?

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

Answer: (D)

Wall ties must sit back from the edge of a masonry unit to give the tie solid mortar coverage and a secure anchor. When the tie is about a half inch from the edge, it ends up well within the mortar joints on both faces, protecting the steel and ensuring the tie is fully bonded between wythes. If the tie is placed closer to the edge, there isn’t enough mortar around it, which can weaken the bond and risk the unit edge being damaged. If it’s set farther back than half an inch, the embedment is reduced and the tie won’t engage the mortar as effectively. So the half-inch distance provides the proper balance for a strong, durable connection.

Wall ties must sit back from the edge of a masonry unit to give the tie solid mortar coverage and a secure anchor. When the tie is about a half inch from the edge, it ends up well within the mortar joints on both faces, protecting the steel and ensuring the tie is fully bonded between wythes. If the tie is placed closer to the edge, there isn’t enough mortar around it, which can weaken the bond and risk the unit edge being damaged. If it’s set farther back than half an inch, the embedment is reduced and the tie won’t engage the mortar as effectively. So the half-inch distance provides the proper balance for a strong, durable connection.