A Lightning Talk
Known as “Status”, this is a new attribute for select features in the OS NGD Land Use, Land, Buildings, Structures, Transport (Road, Tracks or Paths and Rail) and Water Themes.
Operational Status describes the state of feature in relation to either its physical condition or the activity the feature is intended to support.
Active – the feature is currently performing the function indicated by its land use attribution
Inactive – the feature is recognisable, but it is currently not performing the function indicated by its attribution
Under Construction – the feature is recognisable, but it is currently not performing the function indicated by its attribution (applies to building part only)
Derelict – the feature is in a state of disrepair sufficient that it can no longer perform its original purpose
Unknown – A Site has been identified, typically from aerial imagery, but we have not yet determined that function (if any)
Null – A location where we do not capture Status
The primary enhancements are to the Land Use Sites feature type:
Layers that form the topographic data within the Land Use Sites are also included in this enhancement
click the above images to enlarge them
There are 2 new attributes:
Status - The state of the Site in relation to either its physical condition or the activity the feature is intended to support.
Status Update - Date when the attribute was last updated.
Existing attributes have been updated with new values for Derelict status. In the example below these would be:
Description: “Derelict Site”
NLUD Code: U112
NLUD Order Description: “Vacant and Derelict”
NLUD Group Description: “Derelict”
Structures, Transport or Water Features are not recorded as “Under Construction”
Scope:
Operational Status is only recorded for a subset of sites. This includes over 100 site types, viewable within the OS NGD Documentation.
If a Site changes to a different type where Operational Status is not recorded, then the attribute will be made Null
The capture guidance for “Derelict”:
Structures which are in a ruinous, damaged, or potentially unsafe condition
Structures may be visibly internally gutted and reclaimed by vegetation
Occupation will be extremely unlikely without major redevelopment/demolition and rebuild first
Surrounding land is in a neglected condition, overgrown and unmaintained. Hardstanding (made surfaces) maybe broken-up and unusable, would need to be removed and relayed to become usable again
There is the presence of random debris or waste
Not all derelict buildings will be captured in our data, because change intelligence to say when a residential house has been boarded up and now sits derelict is not available.
Where has the Operational Status data come from?
Operational Status is determined by a mix of OS and 3rd party data sources
OS data capture:
Interpretation of OS topographic data and aerial imagery
Ground survey for ongoing maintenance
3rd party data:
Scottish Vacant and Derelict Land Survey
Brownfield Land (Sites and Land datasets, England only)
We are currently unable to identify a source for 3rd party data in Wales
Links that may be useful:
This content has been developed from what was originally a Lightning Talk PowerPoint slide set. These slides are available to PSGA members to view and download from the PSGA members area of the OS website
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