BUILDING COMPONENT

SN A structure which can be an area within a building, a separate building within a complex or a detached architectural component of a building
CL UNASSIGNED
BT BUILDING
NT BASEMENT
CANTEEN
CELLAR
COLONNADE
COLUMN
CONTROL ROOM
EXCHEQUER
FUEL STORE
HIDING PLACE
REFECTORY
REPOSITORY
UNDERCROFT
VAULT