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What does "bank measure" refer to in excavation?

  1. Measurement of loose soil

  2. Measurement of volumes with adjustments for swell

  3. Measurement of soil based solely on excavation dimensions

  4. Measurement including compaction factors

The correct answer is: Measurement of soil based solely on excavation dimensions

"Bank measure" in excavation refers specifically to the measurement of soil or earth in its natural, unexcavated state. This means it encompasses the dimensions and volume of the soil without accounting for any changes that occur during the excavation process, such as the looseness of the soil or any changes in volume that might occur once the soil is disturbed. When soil is excavated, it usually expands due to the release of pressure, a phenomenon known as swell. Bank measure does not consider these factors, focusing strictly on the original volume based on excavation dimensions. Therefore, it's crucial for estimators to understand bank measure for accurate cost assessments and project planning. The other choices involve adjustments for changes in the soil caused by excavation, whereas bank measure remains constant irrespective of such variations.