Buildings
GIS File Name
BASEMAP_Buildings
Description
City of Cambridge, MA GIS basemap development project encompasses the land area of City of Cambridge with a 200 foot fringe surrounding the area and Charles River shoreline towards Boston. The basemap data was developed at 1" = 40' mapping scale using digital photogrammetric techniques. Planimetric features; both man-made and natural features like vegetation, rivers have been depicted. These features are important to all GIS/mapping applications and publication. A set of data layers such as Buildings, Roads, Rivers, Utility structures, 1 ft interval contours are developed and represented in the geodatabase. The features are labeled and coded in order to represent specific feature class for thematic representation and topology between the features is maintained for an accurate representation at the 1:40 mapping scale for both publication and analysis. The basemap data has been developed using procedures designed to produce data to the National Standard for Spatial Data Accuracy (NSSDA) and is intended for use at 1" = 40 ' mapping scale.
This layer is continually updated from site plans submitted to the City. The accuracy of the edits do not meet the specifications of the 2010 mapping project, but are a better reflection of what is on the ground currently.
Purpose
City of Cambridge 1" - 40' base map layers from an April 14, 2010 flyover. Basemap layers created by Infotech America, and updated by the City.
Download Layer Data
Last Modified
11-19-2019
Attributes
| Name |
Type Details |
Description |
| TYPE |
type: String
width: 50
precision: 0 |
Type of building (building, outbuilding, ruin) |
| TOP_GL |
type: Double
width: 8
precision: 38 |
Elevation of highest point above ground level (NAVD88) |
| ELEV_SL |
type: Double
width: 8
precision: 38 |
Elevation of roofline edge above sea level (NAVD88) |
| TOP_SL |
type: Double
width: 8
precision: 38 |
Elevation of highest point above sea level (NAVD88) |
| BASE_ELEV |
type: Double
width: 8
precision: 38 |
Elevation of structure (NAVD88) |
| BLDGID |
type: String
width: 50
precision: 0 |
Unique building ID in master address block |
| ELEV_GL |
type: Double
width: 8
precision: 38 |
Elevation of roofline edge above sea level (NAVD88) |
| CREATED_USER |
type: String
width: 255
precision: 0 |
|
| CREATED_DATE |
type: Date
width: 8
precision: 0 |
|
| LAST_EDITED_USER |
type: String
width: 255
precision: 0 |
|
| LAST_EDITED_DATE |
type: Date
width: 8
precision: 0 |
|
Coordinate System
NAD 1983 StatePlane Massachusetts Mainland FIPS 2001 Feet