Philadelphia Fire Department Practice Exam

An assembly of beam members, constructed to form a rigid framework, is known as a _____.

1. Square rig

2. Lock

3. Rung block

4. Truss

The correct answer is: Truss

A truss is defined as an assembly of beam members connected at joints to form a rigid framework. This configuration allows it to distribute loads effectively, making it ideal for various structures such as roofs, bridges, and towers. The design of a truss maximizes strength while minimizing the amount of material needed, which is a key consideration in construction and engineering. The connections between the beam members increase the stiffness of the structure and enable it to bear heavy loads while maintaining its shape. Trusses are often used in scenarios where it is important to span large distances without relying on extensive support beams, showcasing their versatility and efficiency in structural applications. In contrast, the other terms listed do not accurately describe a structured assembly of beams designed for load-bearing. Each of those options represents different components or structures within construction, but they do not encapsulate the concept of a rigid framework made primarily from beams and joints, which is the defining characteristic of a truss.