Building Footprints 2023

Building structures include parking garages, ruins, monuments, and buildings under construction along with residential, commercial, industrial, apartment, townhouses, duplexes, etc. Buildings equal to or larger than 9.29 square meters (100 square feet) are captured. Buildings are delineated around the roof line showing the building "footprint." Roof breaks and rooflines, such as between individual residences in row houses or separate spaces in office structures, are captured to partition building footprints. This includes capturing all sheds, garages, or other non-addressable buildings over 100 square feet throughout the city. Atriums, courtyards, and other “holes” in buildings created as part of demarcating the building outline are not part of the building capture. This includes construction trailers greater than 100 square feet. Memorials are delineated around a roof line showing the building "footprint."Bleachers are delineated around the base of connected sets of bleachers. Parking Garages are delineated at the perimeter of the parking garage including ramps. Parking garages sharing a common boundary with linear features must have the common segment captured once. A parking garage is only attributed as such if there is rooftop parking. Not all rooftop parking is a parking garage, however. There are structures that only have rooftop parking but serve as a business. Those are captured as buildings. Fountains are delineated around the base of fountain structures.本数据集涵盖的建筑类目标包括停车场楼（parking garage）、废墟、纪念性建筑，以及在建建筑；同时涵盖住宅、商业、工业、公寓、联排住宅（townhouse）、双拼住宅（duplex）等多种建筑类型。仅标注面积大于或等于9.29平方米（100平方英尺）的建筑。建筑轮廓以屋顶线为基准进行标注，以呈现建筑的占地面积（footprint）。屋顶断点与屋顶线（例如联排住宅各户之间、办公建筑独立区域之间的分界）将被标注，用于拆分建筑占地面积轮廓。本次标注涵盖全市范围内所有面积超过100平方英尺的棚屋、普通车库及其他无门牌号的建筑。建筑内部因划定轮廓形成的中庭、庭院及其他"内部空洞"，不计入建筑标注范围。面积超过100平方英尺的施工临时用房也包含在标注范围内。纪念性建筑以屋顶线为基准标注其占地面积轮廓。露天看台（bleachers）以相连看台组的基座为基准进行轮廓标注。停车场楼（parking garage）以其建筑外围为基准进行轮廓标注，包含坡道区域。若停车场楼与线性地物共享边界，则该公共边界段仅需标注一次。仅当建筑带有屋顶停车场时，方可被归类为停车场楼；但并非所有带有屋顶停车场的建筑都属于停车场楼。部分仅设有屋顶停车场的建筑为商业用途，此类建筑将按普通建筑进行标注。喷泉以其主体结构的基座为基准进行轮廓标注。