Which of the following statements about measuring earthwork in trenches or borrow pits is accurate?

Explanation

Statement A explains that in fairly uniform ground, earthwork is measured using the average depth of the dead men. Statement B states that in irregular terrain, measurements are taken by noting the difference in levels before and after excavation. Statement C covers cases where neither method is suitable, and the measurement is done by calculating the volume of fill minus voids. Therefore, all the provided statements are correct.