Property Subsidence Assessment dataset

The property subsidence assessment dataset provides an understanding of the shrink-swell hazard at both the individual property and/or postcode level for England and Wales. It builds upon the BGS GeoSure shrink-swell data by mapping the hazard to the individual building polygon and considering the other susceptibility factors of building type, foundation depth, and drainage and tree proximity. The data consist of GIS building polygons with an overall susceptibility to subsidence score between 1-100. Scores are also classified from non-plastic to very high. Each building polygon is also scored from 1-10 for each subsidence factor (geology, foundation, drainage, building type, building storey and tree proximity). Postcode data is also available as a table showing the ‘average’ PSA score for all buildings within the postcode. The identification of shrink-swell related subsidence prone areas, alongside the inclusion of potential sources to exacerbate these phenomena, can better inform insurers and homeowners and form the basis to make decisions concerning prevention and remediation. The product enhances geological information obtained from GIP (BGS GeoSure Insurance Product) and GeoSure via the inclusion of the crucial shrink-swell susceptibility factors (proximity to trees and foundation depth). This therefore allows the derivation of a risk element for the housing stock at Building level, which is then generalised to Postcode level. BGS GeoSure - a series of GIS digital maps identifying areas of potential natural ground movement hazard in Great Britain
 
Citation proposal
. Property Subsidence Assessment dataset. https://metadata.bgs.ac.uk/geonetwork/srv/api/records/b9deb0cc-588c-0081-e054-002128a47908

Simple

Date ( Creation )
2021-01
Identifier
http://data.bgs.ac.uk/id/dataHolding/13607701

  Distributor

  0115 936 3276 

  Originator

  0115 936 3276 

  Distributor

  Point of contact

Maintenance and update frequency
asNeeded As needed
GEMET - INSPIRE themes
  • Geology
BGS Thesaurus of Geosciences
  • Shrink-swell clays , Subsidence , Foundations , Property damage
Keywords
  • NERC_DDC
Access constraints
otherRestrictions Other restrictions
Use constraints
otherRestrictions Other restrictions
Other constraints
The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.
Other constraints
The dataset is made available to external clients under BGS Digital Data Licence terms and conditions. Revert to the IPR Section (iprdigital@bgs.ac.uk ) if further advice is required with regard to permitted usage.
Spatial representation type
vector Vector
Metadata language
English English
Topic category
  • Geoscientific information
Geographic identifier
EAW

 

Date ( Revision )
2009

Geographic identifier
ENGLAND & WALES [id=149000]

 

Date ( Creation )
1979

N
S
E
W


Reference System Information

No information provided.
Distribution format
  • ESRI ArcGIS ()

  • Other formats could be supplied on request ()

  Distributor

  0115 936 3276 

  Distributor

OnLine resource
British Geological Survey Homepage  
Hierarchy level
dataset Dataset
Other
dataset

Conformance result

Date ( Publication )
2011
Explanation
See the referenced specification
Pass
false

Conformance result

Date ( Publication )
2010-12-08
Explanation
See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
Pass
false
Statement
Input data:  OS OpenMap Local building polygons  GeoSure shrink-swell  National Tree Map (Bluesky)  Office for National Statistics (UK property build period)  Office for National Statistics (UK property type)  OS Code Point open Process: GeoSure and the other input datasets are mapped to the OS Open building polygons. Each building is then scored for each input factor. Input factors are then combined via a weighted algorithm to derive the PSA score for each building, this score is then classified into the PSA classes. Building polygon scores are aggregated to produce the postcode score. Processing was carried out using python scripts in ARCGIS

gmd:MD_Metadata

File identifier
b9deb0cc-588c-0081-e054-002128a47908   XML
Metadata language
English English
Hierarchy level
dataset Dataset
Date stamp
2021-05-14
Metadata standard version
2.3

  Point of contact

Dataset URI
http://data.bgs.ac.uk/id/dataHolding/13607701
 
 

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