LOCATION: Modbury, UK

• Site Investigation

• Geotechnical design

• Flood relief earth dams / bunds

• Earthworks

SWG were instructed to scope and complete a comprehensive geotechnical assessment for a series of proposed flood relief dams in Modbury, Devon. The works then led on to geotechnical design, working along side an appointed panel engineer. The design included stability analysis and earthworks.

The investigation comprised of a geology and geomorphology focused desk study and mapping with follow on investigation(s) comprising trial pits, boreholes and in-situ testing. Related geotechnical laboratory testing was then completed by SWG’s in-house UKAS accredited geotechnical laboratory.

All the information was then used to develop a detailed ground model. This model formed the basis of the geotechnical design that comprised a detailed appraisal of the suitability of site one fill from a permeability, grading and erodibility perspective.

RocScience software SLIDE was used to provide the stability analysis. The earthworks specification was complete in accordance with the Highways agency Series 600 earthworks.