Massachusetts Construction Supervisor License (CSL) Practice Test

In open web steel construction, which component is always in tension?

1. Top chord

2. Bottom chord

3. Web member

4. Diagonal brace

The correct answer is: Bottom chord

In open web steel construction, the component that is always in tension is the bottom chord. The bottom chord primarily carries tensile forces resulting from loads applied to the structure. In a truss system, as loads are distributed, the top chord is placed under compression, while the bottom chord, being positioned lower, experiences tension as it stretches to accommodate the load and support the structure above. This distinction is crucial in understanding the forces at play in truss design and ensuring the integrity and safety of structural applications. The function of the bottom chord is particularly important in maintaining equilibrium and transferring loads effectively through the structure. Understanding these roles helps in the design and analysis of structures, ensuring that each component can effectively handle the forces it encounters during service.