Utilities Surveying

Geophysical type survey equipment is used to target buried utilities and infrastructure, and form accurate mapping of pipe and cable positions, depths and routes.

Having a comprehensive and accurate utility survey can enable a project design team to incorporate existing infrastructure into proposed developments and avoid unforeseen conflict with existing utilities, resulting in cost savings by reducing utility relocations, design changes or construction delays; not to mention keeping your workforce safe. 

Services are detected using a combination of electro-magnetic transmitters & locators, flux gate magnetometer, pulse induction metal detector and ground penetrating radar (GPR). This equipment can detect both metallic and non-metallic targets. 

Results are coordinated using robotic total station and RTK GNSS and are issued as structured and layered CAD drawings, along with associated survey reporting. This information can be combined with existing site surveys or with a topographic survey coordinated by us.

Rather than carry out 'one size fits all' type surveys, I recommend an investigative and interpretive methodology, where all aspects of the project objective and site specifics are considered and incorporated into the procedure. This connected approach aims to avoid the cursory, and often incorrect, delineation of signals and reflections that some predetermined and solely grid-based survey specifications may yield.

I take the best from existing survey guidelines such as PAS 128, and combine this with proven techniques and adaptive methodologies; with the aim of achieving accurate, comprehensive and reliable mapping of subsurface apparatus.

Having a comprehensive utility survey prior to excavation is a key component of HSG47 safe digging practices, and is crucial in reducing the risk of service strikes, keeping your workforce safe and meeting your legal obligations.