Geo Radar - Experience Reliable Surveying with GPR Utility Surveys London | Utility GPR Surveys Surr

We offer a range of professional surveying services to meet your needs. Our team of experts has decades of experience and uses the latest technology to provide accurate and reliable results. Contact us today to learn more about how we can assist you with your project.

A PAS 128 Utility Survey is a standard for mapping and locating underground utilities (such as water, gas, electricity, and telecommunications) with high accuracy. PAS 128 is a Publicly Available Specification published by the British Standards Institution (BSI) to guide best practices for utility surveying.

The primary purpose of a PAS 128 Utility Survey is to reduce the risks of damaging underground utilities during construction or excavation work. It provides a reliable and precise method to locate and map these utilities before work begins, ensuring safety and helping with project planning.

Key aspects of a PAS 128 Utility Survey include:

1. Survey Grades: The standard categorizes surveys into different grades based on the level of accuracy and verification used.
   
   • Grade D (Desk study): Involves reviewing available utility records and plans.
   • Grade C (Detection): Involves locating utilities using non-intrusive methods like ground-penetrating radar (GPR).
   • Grade B (Verification): Utilities are located and verified with more detailed methods like electromagnetic induction.
   • Grade A (Precise location and verification): The most accurate survey, using techniques like excavation to physically locate and verify utilities.

1. Methods of Surveying: Various tools and techniques are used in the survey, such as:
   
   • Ground Penetrating Radar (GPR): To detect utilities without digging.
   • Electromagnetic Locators: To find metallic utilities.
   • Manual Excavation: To confirm the precise location of utilities.

1. Utility Mapping: The survey results in detailed maps or plans that show the exact locations of utilities, providing a clear understanding of what's underground in a given area.
2. Risk Mitigation: By accurately mapping underground utilities, the PAS 128 survey helps prevent damage to services, which could lead to costly repairs or dangerous situations, as well as project delays.

In short, a PAS 128 Utility Survey ensures that contractors and developers can plan and execute work safely, avoiding accidental utility strikes, and ensuring compliance with safety standards.