Underground Utility surveys assist with design by reducing the amounts of unknowns within the site by showing any existing services. Utility suppliers can provide approximate location plans/ stat plans of known assets. However, these are usually limited to mains in public areas only and do not show domestic connections. Additionally, the location of assets on these surveys may be inaccurate by up to 10 metres.

In contrast, Layer Surveys Ltd are able to provide an accurate location of conductive and non-conductive services using non-invasive / no dig methods. Our experienced personnel and top of the range equipment enable us to meet most specifications including TSA Level 4 / PAS 128:2014 M1 to achieve QL-B. Our surveys can show full horizontal and vertical (depth of cover) positioning on all detected buried utilities and anomalies, including plastic, fibre-optic and clay drainage pipes.

This enables us to map the following utilities:

• Electric
• Gas
• Water
• Communications, including fibre optic

Our surveys can be focused on identifying the location and depth of one particular buried service or we can perform blanket surveys of an entire site/development area. Underground Mapping techniques are used on a wide variety of sites and environment including but not limited to:

• Town centres/highways
• Factories/plants
• Sewage & water treatment works
• Power stations (coal, gas & nuclear)
• Electrical substations
• Gas terminals
• Production Facilities
• Rail Network