Bench Slope Calculator

The Bench Slope Calculator allows one either to (i) calculate the IRA given a set of criteria (bench height, BFA, and catch bench); or (ii) calculate the catch bench width given the height, BFA, and IRA.  The yellow shaded cells represent the input cells.

• Single Bench Height (BH): is the input height of a single operating bench

• No. of Benches between catch benches: is the input for single, double, or triple benching

• Total Height (TH): is the calculated total height (# of benches X single bench height)

• Bench Face Angle (BFA): is the input bench face angle, in degrees

• Catch bench (CB): is the width of the catch bench, either as an input or a calculated value

• Inter-Ramp Angle (IRA): is the slope angle in degrees, either as an input or calculated value

For details, see blog "Pit Wall Angles and Bench Width – How Do They Relate".