Description: Building polygons for Radford, Virginia. For 1"=200' or (1:2400) scale source mapping (1' GSD imagery): all structures with roofs having an aerial coverage of 200 square feet or greater will be captured from the photography as a polygon. Buildings are delineated by tracing the base of the structure for dwellings, businesses, houses, barns. For 1"=100' or (1:1200) source scale mapping (6" GSD imagery): all structures with roofs having an aerial coverage of 100 square feet or greater are captured from the photography as a polygon. Buildings are delineated by tracing the base of the structure for dwellings, businesses, houses, house trailers, garages, barns, and accessory structures.