Estimating Practice Exam

What is the term for the difference in volume between the hole and the excavated material?

1. Swell factor

2. Compaction factor

3. Bank measure

4. Excavation ratio

The correct answer is: Swell factor

The term that describes the difference in volume between the hole and the excavated material is "swell factor." This concept is critical in earthwork and excavation operations. When soil is excavated, it typically expands due to the loosening of its particles, which leads to an increase in volume. This phenomenon is quantified by the swell factor, allowing estimators to predict the volume of material that will occupy a space once it is removed from the ground. This information is essential for accurate budgeting and planning in construction projects since it directly affects how much material will need to be transported away from the site and how much will be needed for backfilling, among other considerations. The swell factor helps professionals account for this increase in volume and ensures that estimations reflect the actual material quantities involved in the project. The other terms mentioned, such as compaction factor, bank measure, and excavation ratio, refer to different aspects of construction estimating and soil management, but do not specifically address the volume difference caused by swelling when material is excavated.