# Centroid of a composite section
# Scope: Two adjacent rectangles represented by their areas and centroids.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

areaA = 1000 mm^2
areaB = 500 mm^2
xA = 10 mm
xB = 40 mm

centroid := (areaA*xA+areaB*xB)/(areaA+areaB) [mm]

check centroid bound: centroid <= xB

scenario alternative: areaA = 800 mm^2