IRSAOSA

Open-pit mine design

Slope Angle Calculator for Pit Wall Design

Model a pit wall as a stack of benches, berms and haul roads, then read off the overall slope angle (OSA) and inter-ramp slope angle (IRSA) — updated live as you adjust the geometry.

Build your pit wall scenario

Enter your bench geometry step by step to see the overall (OSA) and inter-ramp (IRSA) slope angles. Or unlock live sliders with your email to explore scenarios freely.

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Feedback shapes where this tool goes next — extra parameters, exports, saved scenarios. Tell us what would make it part of your workflow.