Structure Footprint

Metadata also available as

Frequently anticipated questions:


What does this data set describe?

Title: Structure Footprint
Abstract:
Building and structure footprints in unincorporated Boulder County, Colorado. Updated 5/21/2013.
  1. How should this data set be cited?

    , Structure Footprint.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -105.639198
    East_Bounding_Coordinate: -105.051048
    North_Bounding_Coordinate: 40.263492
    South_Bounding_Coordinate: 39.911618

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • GT-polygon composed of chains (39742)

    2. What coordinate system is used to represent geographic features?

      The map projection used is NAD 1983 HARN StatePlane Colorado North FIPS 0501.

      Projection parameters:
      Standard_Parallel: 39.71666666666667
      Standard_Parallel: 40.78333333333333
      Longitude_of_Central_Meridian: -105.5
      Latitude_of_Projection_Origin: 39.33333333333334
      False_Easting: 3000000.000316083
      False_Northing: 999999.999996

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.000000026926350038536387
      Ordinates (y-coordinates) are specified to the nearest 0.000000026926350038536387
      Planar coordinates are specified in foot_us

      The horizontal datum used is D North American 1983 HARN.
      The ellipsoid used is GRS 1980.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257222101.

  7. How does the data set describe geographic features?

    Footprints

    FID
    Internal feature number. (Source: Esri)

    Sequential unique whole numbers that are automatically generated.

    Source
    Structure footprint source (Source: Land Use staff)

    StructureI
    Unique structure ID (Source: GIS)

    Status
    Status of the Structure (Source: Land Use staff)

    StructureT

    StatusDate
    Most recent date the building was drawn. (Source: Land Use staff)

    Height
    Structure height in feet (Source: Land Use)

    BaseElevat
    Base elevation of structure (Source: Land Use)

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    Shape_area
    Area of feature in internal units squared. (Source: Esri)

    Positive real numbers that are automatically generated.


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Boulder County Land Use

  3. To whom should users address questions about the data?


Why was the data set created?

This data layer represents the building footprints for unincorporated Boulder County, Colorado. The intent is to maintain this data layer continuously as new aerial photography becomes available and from building permit records. The goal is to maintain a structure dataset within one year of actual conditions.
Permanent buildings generally over ten by ten feet that have a roof or are habitable are mapped. This includes structures such as houses, commercial buildings, manufactured housing, garages, sheds, silos, agricultural buildings, etc. are mapped. Stand-alone photovoltaic arrays are also mapped. Temporary, mobile or minor structures such as RV’s, yard and play equipment, swimming pools, pergolas, trellises, fencing, retaining walls, light poles, and signs are not mapped.
The building footprint data is primarily based on aerial photography from 2008-2011 and captured by outlining the structure rooflines. Other sources include the buildings captured from 1999 aerial photography, building extents drawn by Bohannan-Houston in the Fourmile Canyon Fire area and buildings drawn by the City of Boulder and downloaded from the City’s website.


How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

  3. What similar or related data should the user be aware of?


How reliable are the data; what problems remain in the data set?


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints:
The user agrees to all Terms of Use set forth by Boulder County. For Terms of Use, please visit: www.bouldercounty.org/mapdisclaimer


Who wrote the metadata?

Dates:
Last modified: 21-May-2013
Metadata author:
Boulder County Land Use
PO Box 471
Boulder, CO 80306

303-441-3930 (voice)
planner@bouldercounty.org

Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)


Generated by mp version 2.9.12 on Tue May 21 09:01:48 2013