Certified Associate Constructor (CAC) Level 1 Practice Exam

To determine the bank cubic yards of soil needed to fill an excavation, you must take into account the volume of the excavation and the compaction factor. In this case, the excavation is 45 cubic yards, and the compaction factor is given as 88% (or 0.88).

The process for calculating the bank cubic yards is as follows:

1. **Identify the volume of the excavation**: This is given as 45 cubic yards.

2. **Calculate the effective volume after compaction**: Since the compaction factor is 0.88, this means that only 88% of the cut volume will be usable for filling. Therefore, you need to divide the excavation volume by the compaction factor to find how much bank cubic yards is required before applying the compaction.

\[

\text{Bank Cubic Yards} = \frac{\text{Excavation Volume}}{\text{Compaction Factor}} = \frac{45 \text{ Ccy}}{0.88}

\]

3. **Perform the calculation**: When you divide 45 cubic yards by 0.88, you get approximately 51.14 cubic yards. This rounds down slightly to