North Carolina Home Inspector Practice Exam

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What is the minimum bearing depth for a steel lintel used in a masonry wall?

2 inches
4 inches
6 inches
8 inches

The correct answer is: 4 inches

The minimum bearing depth for a steel lintel used in a masonry wall is established to ensure adequate support and stability. A bearing depth of 4 inches is recommended as it provides the necessary strength to distribute loads effectively across the masonry wall. This depth helps prevent issues such as lateral movement, deformation, or unexpected failure of the lintel and the wall system it supports. Lesser bearing depths might compromise the structural integrity, as they can lead to insufficient support under load-bearing conditions. Therefore, the guideline for a minimum of 4 inches balances safety with practicality, ensuring the lintel functions effectively within the overall construction. Higher bearing depths, while potentially more secure, are not generally required for typical steel lintels in masonry applications, making 4 inches the standard minimum that aligns with building codes and engineering practices.