'constructional' originates from the Latin word 'constructio', where 'con-' meant 'together' and 'struere' meant 'to pile up or build'.

'constructio' transformed into the Old French word 'construction', and eventually became the modern English word 'constructional'.

Initially, it meant 'the act of building or assembling', but over time it evolved into its current meaning of 'relating to construction'.