Gladstone Road, Exeter

June 2022

RML were commissioned to carry out a Site Investigation for a new single-storey extension to the existing Waitrose Supermarket and for a new lightweight canopy in the rear car parking area.


Fieldwork was undertaken in line with British Standards BS 5930:2015+A1:2020. 3 No. Drive-In-Sampler Boreholes, MEXE Probe CBR Tests, and 3 No. Mechanically/Hand Excavated Trial Pits were undertaken as part of the investigation.

Ground Conditions

According to information published by British Geological Survey (BGS) the underlying geology at the site were recent River Terrace Deposits overlying Alphington Breccia of the Permian Period.

Laboratory Testing

Natural moisture contents, Atterberg Limits, Quick Undrained Triaxial Compression Tests, and pH and Sulphate Tests were the Laboratory tests undertaken for the project.