Carpentry tends to span beyond direct woodworking. Installing Drywall over steel studs is one example that might apply to DC construction.
>Carpentry is a skilled trade and a craft in which the primary work performed is the cutting, shaping and installation of building materials during the construction of buildings, ships, timber bridges, concrete formwork, etc.
>Carpentry is a skilled trade and a craft in which the primary work performed is the cutting, shaping and installation of building materials during the construction of buildings, ships, timber bridges, concrete formwork, etc.
https://en.wikipedia.org/wiki/Carpentry