Alabama Contractors License Practice Exam

Vertical reinforcement of a masonry foundation wall shall have a minimum yield strength of how many psi?

1. 20,000 psi

2. 40,000 psi

3. 60,000 psi

4. 80,000 psi

The correct answer is: 60,000 psi

The minimum yield strength for vertical reinforcement of a masonry foundation wall is set at 60,000 psi. This standard is in place to ensure that the reinforcement possesses sufficient strength to withstand the loads it must carry, such as those from the weight of the masonry and any additional load from above. Using reinforcement with a yield strength of 60,000 psi provides an adequate safety margin, allowing the foundation walls to perform effectively under various conditions, including potential lateral pressures and structural vibrations. The higher yield strength contributes positively to the durability and longevity of the masonry structure, especially in regions prone to seismic activity or varying soil conditions. The other options suggest higher yield strengths which, while they may offer additional strength, are often not required by the engineering standards for typical masonry walls, leading to inefficiencies and increased costs without substantial benefits for most applications.