Represent free haul and overhaul from balance points, where the mass haul line and balance line meet.
Balance Point Method: The arrows indicate free haul distance. The number (1) indicates balance points. Freehaul volume is indicated in green and overhaul volume is indicated in red.
In a mass haul diagram, the balance point s are located on the balance line, where the net volume is zero. In the balance points method of measuring free haul, the mass haul line is duplicated and shifted horizontally to the right (where the project transitions from cut to fill) or to the left (where the project transitions from fill to cut) by the free haul distance. The area enclosed by the two mass haul lines on the left if above the balance line, or on the right if below the balance line, represents the free haul volume. The remaining intersecting area represents the overhaul.