Georgia Residential Contractor Practice Exam

How does polystyrene aggregate compare to gravel systems?

1. It is less effective

2. It should work the same

3. It is more expensive

4. It requires special handling

The correct answer is: It should work the same

The reasoning for selecting that polystyrene aggregate should work the same as gravel systems lies in its functional properties. Polystyrene aggregate is designed to mimic the performance characteristics of traditional aggregates like gravel. It provides similar benefits, such as lightweight structural integrity and insulation properties, which can be crucial in construction applications. The comparison does, however, recognize that while polystyrene aggregate may function effectively in many scenarios, there are distinctions concerning cost, handling, and specific engineering properties. Being less dense can result in different behavior under load, which might not perfectly replicate all aspects of gravel systems. By appreciating that polystyrene aggregate serves many of the same roles as gravel, one can understand its evolving application in modern engineering, particularly in contexts where weight reduction is advantageous or where thermal insulation is needed.