superfoot
/ˈsuːpəfʊt/ /ˈsjuːpəfʊt/Chiefly Building
noun
A square foot. In later use specifically (chiefly Australian and NZ ) a square foot of timber of a specified thickness, usually one inch.
Origin
Early 19th century; earliest use found in Robertson Buchanan (1769–1816), mechanical and civil engineer. From super + foot.