GRSM_HISTORIC_STRUCTURES

Historic buildings are a resource created principally to shelter any form of human activity, such as a house. These resources would include features such as: farmhouses, homesites, mansions, churches, museums (if the building is historic), courthouses, offices, prisons, train depots, etc. Historic buildings most often function primarily as dwellings. The point may represent the center of the building, an entrance, a corner, etc., while the polygon may represent the building footprint. Structures are a functional construction made for purposes other than creating shelter, such as a bridge. These resources would include features such as: fortifications, earthworks, roads, fences, canals, dams, engineering features, barns, outbuildings, arsenals, ships, manufacturing facilities, etc. These resources represent sites that do not function primarily as dwellings, however they may serve temporarily to house humans, although their primarily purpose is not a permanent shelter. The point may represent the location of a culvert, while a line may represent a fence or road, and a polygon may represent the circumscribed boundary of a manufacturing plant.

历史建筑是主要为承载各类人类活动而建造的资源载体，例如住宅。此类资源涵盖的类型包括农舍、住宅用地、宅邸、教堂、博物馆（若该建筑具有历史属性）、法院办公楼、办公场所、监狱、火车站等。历史建筑的核心功能通常为居住用途。点位可代表建筑的中心、入口、转角等位置，而多边形则可表示建筑基底轮廓（building footprint）。构筑物指为非居住功能而建造的功能性建筑，例如桥梁。此类资源涵盖的类型包括防御工事、土方工程设施、道路、围栏、运河、水坝、工程构筑物、谷仓、附属建筑、军械库、船舶、生产厂房等。此类资源的核心功能并非居住，但可临时用于人员安置，但其根本用途并非提供永久性居住场所。点位可代表涵洞的位置，线条可表示围栏或道路，而多边形则可表示生产厂房的外围边界。