{ "currentVersion": 11.4, "cimVersion": "3.4.0", "id": 13, "name": "Buildings", "type": "Feature Layer", "description": "This layer contains the buildings that have been captured through various processes. The original data in this layer was captured during the 1997 data conversion effort for Fairfax County. The most recent building footprints update was completed in 2011-2013 using 2009 stereo models. 1997: This layer contains the buildings that have been captured through various processes. The original data in this layer was captured during the 1997-2000 data conversion effort for Fairfax County. The building footprints were captured using stereo models. Since then the GIS office has captured building rooftops from orthophotography by performing heads up digitizing. Prior to receiving the orthophotography, site plans are used to capture the planned building footprints. These different sources of the buildings are indicated within the building attributes as well as the type of building.Contact: Fairfax County GIS DivisionData Accessibility: PublicUpdate frequency: Approximately 8 yearsCreation date: 1/1/1997Update date: 1/1/2007, 1/1/2009Layer Name: GISMGR.BUILDINGSDataset Name: GISMGR.PLANIMETRIC", "geometryType": "esriGeometryPolygon", "sourceSpatialReference": { "wkid": 102746, "latestWkid": 2283, "xyTolerance": 0.002, "zTolerance": 2, "mTolerance": 2, "falseX": -110512500, "falseY": -88858000, "xyUnits": 4000, "falseZ": -100, "zUnits": 4, "falseM": 0, "mUnits": 1 }, "copyrightText": "The portion of the data set in the southeastern quadrant of Fairfax County with a source of \"2007 Stereo Models\" was created by GeoDecisions/Fugro EarthData, Inc. The portion of the data set in the rest of the County and with a source of \"2009 Stereo Models\" in the southeastern quadrant was created by GeoDecisions/Infotech, Inc. All quadrants were under contract to Fairfax County. Quality control checks were performed by Plangraphics. Staff from the GIS branch were also used for quality control checking 1997: The data set was created by Analytical Surveys Incorporated (ASI) and Landata under contract to Fairfax County. Quality control checks were performed by Engineering Systems Incorporated and Dewberry and Davis. 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