If no external corner reinforcement is used, the lath must be furred out and carried around corners for at least how many supports on frame constructions?

If no external corner reinforcement is used, the lath must be furred out and carried around corners for at least how many supports on frame constructions?

• A. At least one support on frame constructions
• B. At least two supports on frame constructions
• C. At least three supports on frame constructions
• D. No supports are required

Answer: (A)

When no external corner reinforcement is used, the lath around the corner needs solid backing to resist movement and cracking. By furred-out lath and carrying it around the corner, you create a physical path for the plaster to grip and transfer stresses into the framing. The minimum requirement in frame construction is one support on the framing, which provides a secure attachment point to anchor the lath at the corner. This single support helps keep the corner stable and reduces the risk of cracking or loosening, even though more supports could be added for extra stiffness.

When no external corner reinforcement is used, the lath around the corner needs solid backing to resist movement and cracking. By furred-out lath and carrying it around the corner, you create a physical path for the plaster to grip and transfer stresses into the framing. The minimum requirement in frame construction is one support on the framing, which provides a secure attachment point to anchor the lath at the corner. This single support helps keep the corner stable and reduces the risk of cracking or loosening, even though more supports could be added for extra stiffness.