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3D Visualisation · What is a GPR Survey? What does a GPR Survey Mean?

What is a GPR Survey? What does a GPR Survey Mean?


02081111385 

info@cadmap.co.uk


Expert Ground Penetrating Radar (GPR) Surveys by Cadmap Limited

📍 Introduction: Understanding GPR Surveys in the UK

If you’ve searched “What is a GPR survey?” or “What does a GPR survey mean?”, you’re likely planning groundworks or construction and want to avoid the costly mistake of striking buried utilities.

A GPR survey, or Ground Penetrating Radar survey, is a non-invasive method of detecting underground utilities, voids, and buried structures. At Cadmap Limited, we specialise in delivering accurate, professional GPR utility surveys across the UK — helping clients plan safely and build confidently.

🧭 What Does a GPR Survey Mean?

GPR (Ground Penetrating Radar) is a geophysical detection method that uses radar pulses to scan beneath the ground surface. It detects both metallic and non-metallic services (like plastic pipes or fibre optics) and provides detailed imaging of the subsurface.

In simple terms, a GPR survey means scanning the ground to find out what’s hidden below — without digging.

⚙️ How Does a GPR Survey Work?

GPR systems like the Leica DS2000 used by Cadmap Limited transmit high-frequency radio waves into the ground. When these waves encounter a buried object or change in material, they reflect back to the surface. The system measures these reflections to create a 2D or 3D image of underground features.

🔍 What Can a GPR Survey Detect?

Our GPR surveys can accurately detect:

  • ⚡ Electric cables

  • 🔥 Gas mains

  • 💧 Water pipes (including plastic/PE)

  • 🌧️ Drainage and sewer lines

  • 📡 Fibre optic and telecoms cables

  • 🧱 Voids, tanks, foundations, and buried obstructions

  • 🚧 Reinforced concrete or rebar in slabs

📏 How Deep Can GPR Go?

The depth of a GPR survey in the UK depends on ground conditions, but typically:

Soil TypeApproximate GPR Depth
Dry sand/gravelUp to 5–10 metres
Urban clay soils1–2 metres
Pavements/tarmac0.5–2 metres

Most utility GPR surveys are effective to depths of 1.5 to 2 metres, ideal for locating services prior to excavation.

📐 Why Choose Cadmap Limited for GPR Surveys?

At Cadmap Limited, we combine GPR surveys with EML (Electromagnetic Location) using CAT & Genny devices like the RD8100 to deliver PAS 128 Type B QL-B1 compliant surveys.

Our GPR Survey Service Includes:

  • ✅ Ground Penetrating Radar (GPR) scanning using Leica DS2000

  • ✅ Dual-method utility detection (GPR + CAT & Genny)

  • ✅ PAS 128:2022 compliant methodology

  • ✅ 2D CAD drawings and optional 3D utility models

  • ✅ Nationwide coverage across the UK

  • ✅ Fast turnaround and competitive pricing

🏗️ When Do You Need a GPR Survey?

You need a GPR survey if you're:

  • Planning excavation or trenching

  • Developing land with unknown underground infrastructure

  • Submitting a planning application

  • Ensuring CDM compliance on-site

  • Investigating voids or subsidence

  • Coordinating utility diversions before construction

📄 GPR Survey Deliverables

With Cadmap Limited, you receive:

  • 🗺️ 2D Utility Mapping Drawings (AutoCAD DWG and PDF)

  • 🧱 Optional 3D Utility Models for BIM use

  • 📋 Comprehensive Survey Report outlining methods, findings, and confidence levels

  • 📐 Topographical and utility survey integration, where required

🌍 GPR Survey Specialists – Covering London, Essex, and Across the UK

From small-scale domestic sites to large-scale commercial developments, we provide trusted GPR survey services in:

  • London

  • Essex

  • Kent

  • Birmingham

  • Manchester

  • Nationwide (on request)

💬 Get a GPR Survey Quote Today

Don’t dig blind. Protect your project, people, and budget with a professional GPR survey from Cadmap Limited.

📞 Call: 020 81111 385
📧 Email: info@cadmap.co.uk
🌐 Visit: www.cadmap.co.uk

🧠 FAQ – What Is a GPR Survey?

Q: What does GPR stand for?
A: GPR stands for Ground Penetrating Radar.

Q: What does a GPR survey do?
A: It locates and maps underground utilities and structures non-invasively.

Q: Can GPR detect plastic pipes?
A: Yes – GPR can detect non-metallic services like plastic water pipes and fibre optics.

Q: Is a GPR survey required for PAS 128?
A: Yes – GPR is essential for achieving PAS 128 Type B Quality Level B1 (QL-B1).


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Cadmap Limited – Surveying What Lies Beneath.