# Simple infinite-slope screening
# Scope: Dry cohesionless infinite slope friction-only screening; no groundwater or slip-circle analysis.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

frictionAngle = 30 deg
slopeAngle = 20 deg

factor := tan(frictionAngle)/tan(slopeAngle)

check screening factor target: factor >= 1.5

scenario alternative: frictionAngle = 24 deg