The theoretical area between the gauge cut and the pipe OD equal to (? x (Gauge CutThe outermost projection of the excavation, measured as a diameter. The gauge cut is subject to cutter wear and to the differential cut. OD2 – PipeA long tube of clay, concrete, steel, metal, wood, etc., for conveying water, gas, oil or other materials. OD2)/4). It is the combined area created by the overcut and the shield cut.
