What is the maximum height of unreinforced hollow unit masonry parapet walls in relation to their thickness?

The correct answer is that the maximum height of unreinforced hollow unit masonry parapet walls is 3 times their thickness. This is grounded in structural engineering principles and building codes that aim to ensure stability and safety.

The height-to-thickness ratio is crucial because it directly influences the wall's ability to withstand various stresses, including wind loads and lateral forces. A ratio of up to 3:1 allows for adequate stability without the risk of structural failure. Walls built much higher than this relative to their thickness may become unstable, risking buckling or collapse under pressure.

Understanding this principle is important for any general contractor working in residential construction in North Carolina, as it ensures compliance with building codes and helps maintain the safety and durability of structures.