# Molded wall and rib proportion screening
# Scope: Rib thickness ratio using supplied nominal wall and rib dimensions; no sink prediction.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

wall = 2 mm
rib = 1.2 mm

ratio := rib/wall

check example rib ratio budget: ratio <= 0.6

scenario alternative: wall = 1.6 mm