Data Dictionary

Buildings

Thumbnail

Download Layer

Summary

This dataset consists of 2-dimensional outlines of all buildings/structures within the Town of Dedham, Massachusetts.

Description

This dataset consists of 2-dimensional outlines of all buildings and structures within the Town of Dedham, Massachusetts. This information was originally compiled from 1998 and 2004 orthoimagery sources. Updated features have been derived from roof outlines collected by MassGIS using 2011 orthoimagery and LiDAR and updated with 2013 aerial imagery, scanned plans from the Town of Dedham Building Department, and a planimetric collection from the City of Boston.

Last Update

08-03-2015

Attributes

NameType DetailsDescription
AREA_SQ_FT type: Double
width: 8
precision: 38
Area of the structure polygon in square feet, calculated with the Calculate Geometry tool in ArcGIS software.
FEATURECODE type: String
width: 100
precision: 0
The facility site feature code
MOVED type: String
width: 1
precision: 0
Indicates with Y or N whether or not the polygon was shifted to account for building lean in source imagery.

Domain Values

ValueDescription
YPolygon was shifted
NPolygon was not shifted
SOURCE type: String
width: 100
precision: 0
Polygon source.

Domain Values

ValueDescription
ROLTAData delivered to MassGIS by contractor (Rolta)
SCANNED_PLANData derived from georeferenced building plan
PLANIMETRYData derived from orthoimagery planimetric collection
HEADSUP_DIGData derived from heads-up digitizing from imagery
SOURCEDATE type: Double
width: 8
precision: 38
Date (year) of source data used to create the structure polygon. Code formatted as YYYYMMDD
SOURCETYPE type: String
width: 20
precision: 0
Type of feature. Current codes are ROOFPRINT, ROOFPRINT_SHIFTED or FOOTPRINT

Domain Values

ValueDescription
ROOFPRINTRoof outline
ROOFPRINT_SHIFTEDRoof outline shifted for building lean
FOOTPRINTBuilding footrpint
STRUCT_ID type: String
width: 20
precision: 0
Unique polygon identifier, based on X,Y centroid coordinate of the feature in NAD83 Mass. State Plane meters
TOWN_ID type: SmallInteger
width: 2
precision: 5
Identifier (1-351) for the city/town in which the structure is located.
TOWN_ID2 type: SmallInteger
width: 2
precision: 5
Second identifier (1-351) for the city/town in which the structure is located, if the structure falls within two municipalities.
TOWN_ID3 type: SmallInteger
width: 2
precision: 5
Third identifier (1-351) for the city/town in which the structure is located, if the structure falls within three municipalities.
XCOORD type: Double
width: 8
precision: 38
X coordinate value in maintained coordinate system units
YCOORD type: Double
width: 8
precision: 38
Y coordinate value in maintained coordinate system units
SOURCEINFO type: String
width: 200
precision: 0
Notes regarding the source information used to derive the feature
ARCHIVED type: String
width: 1
precision: 0
Building has been archived because of removal/demolition. A "No" or null value represents existing structure.

Domain Values

ValueDescription
YYes
NNo
ARCHIVEDATE type: Date
width: 36
precision: 0
Date structure was marked as archived.

Coordinate System

NAD 1983 StatePlane Massachusetts Mainland FIPS 2001 Feet

Credits

Town of Dedham, MA GIS Division; Massachusetts Office of Geographic Information (MassGIS); City of Boston, MA

Use Limitations

For planning purposes only.

Legal Constraints

The Town of Dedham makes no warranty in regard to the data whatsoever, including, but not limited to, a warranty of the accuracy of the data or publications. The Town has no liability arising from incomplete, incorrect, inaccurate or misleading data provided. The Town makes no warranties of fitness or merchantability either express or implied in regard to the data or publications provided hereunder. The data or publications provided are provided “as is”. All maps or other documents produced using the data supplied by the Town must contain a data source credit, prominently displayed, such as “GIS data supplied by the Town of Dedham”.

Also, a disclaimer statement shall be attached or displayed stating: “The Town of Dedham makes no claims, no representations and no warranties, express or implied, concerning the validity (expressed or implied), the reliability or the accuracy of the GIS data furnished by the Town, including the implied validity of any uses of such data”.

Tags

Dedham,buildings,structures,basemap