Methodology
| Name | Category | Description |
|---|---|---|
| Collapsible Deposits | Ground Stability | If the material below a building collapses, it may cause the building foundations to rapidly subside. If the ground collapses unevenly, the resulting damage may be more severe than that caused by a uniform collapse. |
| Artificial Ground | Ground Stability | Artificial ground is the term we use for those areas where the ground at or near the surface has been significantly modified by human activity. Typically, this includes ground that has been deposited (Made Ground) or excavated (Worked Ground), or some combination of Landscaped Ground or Disturbed Ground. BGS maps do not indicate the thickness or composition of deposits comprising Artificial Ground, it should be borne in mind that such deposits may well be highly variable in character (including a range of waste materials) and potentially exhibit a range of engineering characteristics due to their heterogenous nature (i.e. they may be compressible, unstable or require careful handling). |
| Dissolution of Soluble Rocks | Ground Stability | Ground dissolution occurs when certain types of rocks, containing layers of soluble material, get wet and the soluble material dissolves. This can cause underground cavities to develop. These cavities reduce support to the ground above and can lead to a collapse of overlying rocks. The Dissolution of Soluble Rocks dataset (procured from BGS GeoSure data product) uses a number of datasets in its creation. These include: • geology (bedrock, superficial, artificial, mass movement) • digital terrain model • superficial deposits thickness model • karstic/non-karstic geology • glacial limits • superficial permeability |
| Landslides | Ground Stability | Landslides occur ultimately due to the effect of gravity, although other factors can all contribute to the overall stability of a slope. Landslides are commonly divided into four categories: falls, topples, slides or flows. |
| Shrink Swell | Climate Change | This dataset provides insight on the likelihood that foundations will be affected by increased clay shrink-swell in the future, compared to current conditions, as a result of climate change. |
| Flooding | Climate Change, Flood Risk | This dataset provides insight on the likelihood that the property will be affected by flooding from all sources (fluvial, pluvial, tidal and groundwater) in the future, compared to current conditions, as a result of climate change. |
| Heat Stress | Climate Change | This dataset provides insight on the property's susceptibility to heat stress in the future, compared to current conditions, as a result of climate change driving higher land surface temperatures. |
| Wildfire | Climate Change | This dataset provides insight on the property's susceptibility to wildfire in the future, compared to current conditions, as a result of climate change. |
| Drought | Climate Change | This dataset provides insight on the property's susceptibility to drought in the future, compared to current conditions, as a result of climate change driving increasing temperatures and decreasing rainfall. |
| Energy Performance Certificate (EPC) | Climate Change | An EPC certificate shows the energy rating of the property (A to G), the environmental impact as carbon dioxide emissions per year, and the potential energy rating of the property. Indicative costs associated with making the necessary energy efficiency improvements are also highlighted. |