North Carolina Building Contractor License Practice Exam

What is camber in a K-series joist defined as?

1. A downward arc

2. A slight upward adjustment

3. A complete straight line

4. A measurement of strength

The correct answer is: A slight upward adjustment

Camber in a K-series joist is specifically defined as a slight upward adjustment. This upward curvature is intentionally incorporated into the design of the joist to counteract deflection that can occur under load. By having this slight upward arc, when weight is applied to the joist, it will settle into a more level position, helping to ensure that the floor or roof systems remain level over time. This design strategy is crucial in maintaining structural integrity and performance. While other choices present concepts associated with structural elements, they do not accurately represent the definition of camber in this context. A downward arc would imply a different type of deflection that would not serve the structural purpose intended by camber. A complete straight line lacks the intentional curvature that characterizes camber, and a measurement of strength does not reflect camber's role in addressing load and support within a flooring system. Understanding camber is essential for predicting and managing the performance of the structural system.