Used in architectural reconnaissance surveys to indicate an individualy inventoried building complex, individual building, structure complex, individual structure, or site. Although not all these may fit into the classification of "architecture," the term is an accepted one. It is abbreviated "arc loc" or "AL." See also Architectural Location Types.
The term was in use when I began working in the field in 1993, and was presumably used by my boss a few years before then. A Google search for the term on the internet July 2007 turned up almost no occurances of it in this context...actually, this website was the first and last that fit the context.
The practice of studying, documenting and planning for the use and care of the built environment. This is usually the historical built environment - houses, bridges, barns, privies, gardens, canals, lakes, farms, trails, roads, ruins, earthworks, habitation sites - any old evidence that people left of their occupation and use of the land.
See also the Wikipedia entry.
A barn that has lost its historically associated House (and usually other outbuildings). The removal of a house from its support buildings is symbolic of children loosing their parents, thus the name.
See also the Orphan Outbuilding(s) entry in Architectural Location Types.