Measure mass haul volumes and mark grade points, balance points, and free haul and overhaul volumes.
A mass haul diagram presents a graphical view of material moved in the proposed design site, displaying balance point s, free haul and overhaul regions, and grade point s. Mass haul diagrams are graphed with stations (sample lines) along the x-axis and cumulative material (typically earthworks) volume on the y-axis. The middle axis (zero cumulative volume) line is called the balance line . When the mass haul line rises, it indicates that a project is in a cut region and when it descends, it is in a fill region. A mass haul region is marked with balance points and grade points.
Grade points (indicated by arrows and circles) in a mass haul diagram (above) and in a profile view connected by lines
Topics in this section
- Free Haul and Overhaul
Represent free haul and overhaul volumes using grade point and balance point methods.