# Beam section sizing
# Scope: Cantilever section depth from an allowable elastic end deflection.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

length = 300 mm
width = 25 mm
load = 20 N
modulus = 69 GPa
limit = 2 mm

requiredDepth := (4*load*length^3/(modulus*width*limit))^(1/3) [mm]

check depth envelope: requiredDepth <= 20 mm

scenario alternative: length = 240 mm