Massachusetts Construction Supervisor License (CSL) Practice Test

What is the primary function of a top chord in a steel joist?

1. Provide support for the roof

2. Transfer loads to the walls

3. Maintain structural integrity

4. All of the above

The correct answer is: All of the above

The primary function of a top chord in a steel joist is indeed multifaceted, making the choice of 'All of the above' the most comprehensive and accurate answer. The top chord serves several critical roles: 1. **Provide support for the roof**: The top chord acts as a horizontal member that supports the roof structure above it. It is essential in distributing the weight of the roof and any additional loads such as snow or equipment installed on the roof. 2. **Transfer loads to the walls**: Additionally, the top chord is pivotal in transferring the loads it carries down to the walls of the building. This load transfer is crucial for maintaining the overall stability of the structure. The design ensures that the forces acting on the roof are effectively routed through the joists and into the load-bearing walls. 3. **Maintain structural integrity**: Finally, the top chord contributes significantly to the overall structural integrity of the framework. Its design is such that it can withstand the tensile and compressive forces exerted by the loads above, providing stability and preventing structural failure. Considering these functions highlights the importance of the top chord beyond a single role, confirming that it effectively provides support, facilitates load transfer, and enhances structural integrity, thereby making the selection