# Corrosion allowance estimate
# Scope: Uniform material loss at a supplied constant corrosion rate.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

initial = 5 mm
rate = 0.1 mm/year
life = 10 year
minimum = 3 mm

remaining := initial-rate*life [mm]

check remaining wall target: remaining >= minimum

scenario alternative: initial = 4 mm