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Specialist underground teams carrying out a GPR survey.

Underground Surveying

Our specialist Underground Utilities team harnesses the latest survey technology, including dual-frequency ground penetrating radar (GPR), to locate and trace services below ground, including sewers, gas mains, heating and water, lighting cables, BT telephone lines, other communication cables and traffic signalling cables.

In addition to locating utilities, our underground surveys provide detailed data on below ground conditions ahead of any site excavations, drilling, piling or borehole clearance. Using GPR and electromagnetic equipment, we can identify and position underground features such as voids, steelwork, shafts and graves which could impact on future construction activity.

Where remote visual inspections are required, we carry out CCTV surveys with robotic cameras providing high definition visual imagery inside drains, pipes, voids and areas of restricted access. Our surveyors can view the camera images in real-time using specialist on-site software and then provide full digital imagery, supported by a detailed technical report.

Any cracks, root ingress, damage and blockage identified in a drainage survey can be cleared with our high pressure jetting service.

A recent addition to our range of underground surveys is concrete and rebar scanning, where our team uses GPR technology to locate and confirm the layout of structural reinforcement within a building or structure, with data presented as high resolution 3D imagery.

Underground Surveying Services

  • Asset Tagging

    Asset tagging is a recent introduction to our underground surveying services, allowing for permanent identification of underground assets.

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  • CCTV Drainage Survey

    Uncover potential blocks in your project with our in depth CCTV Drainage Survey, with a full visual inspection and detailed report.

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  • Geophysical Survey

    A geophysical survey provides data for a range of projects such as roadwork investigations, detecting sinkholes and measuring bedrock depth.

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  • GPR Concrete and Rebar Scanning

    Book a non-invasive GPR Survey to assess buildings, RAAC planks and concrete beams. Suitable across a broad range of projects and sectors.

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  • Underground and Site Investigations

    Using technology such as ground-penetrating radar (GPR), our underground and site investigations identify underground geological features.

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  • Utilities Survey

    Our PAS 128 utilities survey can locate all mains services including electricity, sewers, gas, water mains, fibre optics, and heating.

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    Survey company that is part of British Cartographic Society
    Chartered Institution of Civil Engineers
    The Contractors Health & Safety Assessment Scheme
    Construction Line
    Cyber Essentials – Certified Plus
    European Ground Penetrating Radar Association
    ISO9001: 2015
    ISO27001: 2017
    ISO45001: 2018
    ISO14001: 2015
    NSAN
    SMAS Worksafe
    The Survey Association
    Achilles & Achilles UVDB