Final answer:
Structural members composed of built-up sections involve combining smaller components to form larger, more robust elements essential for supporting heavy loads and enduring dynamic forces in engineering and construction.
Step-by-step explanation:
Structural members that are made from built up sections are typically those that require larger sizes or greater strength than can be provided by a single piece of material. Built-up sections are fabricated by joining smaller sections through welding, bolting, or riveting to form larger structural elements.
Examples of Built-Up Structural Members
- Beams in bridges and buildings which need to support large loads over wider spans.
- Columns that sustain the weight of the structure above, particularly in high-rise buildings.
- Crane beams which must endure heavy loads and dynamic forces.
- Ship hulls for added strength and resilience.
- Large-scale industrial frames, such as those for machinery and equipment.
These built-up sections are essential in engineering and construction, providing the necessary support and stability for architectural structures and various engineering applications.