Before starting excavation or infrastructure work, there may be buried utilities, heterogeneous layers, voids, or indications of voids that are not visible from the ground surface. This is where geophysical surveys come in. At RAMSSKO Lab. for Building Materials Testing, we offer geophysical survey services using specialized techniques, most notably: 📡 GPR _ Ground Penetrating Radar For the detection of: • Buried utilities and services • Cables and pipes • Reinforcement and elements within concrete • Some voids and objects relatively close to the surface MASW [Multichannel Analysis of Surface Waves] • Used in void detection by studying shear wave velocities (Vs) and changes in the stiffness and properties of subsurface layers. It can help identify anomalous regions or velocity reductions that may be associated with voids or cavities. ERT [Electrical Resistivity Tomography] • Also used for void detection. It relies on measuring the electrical resistivity of the soil and subsurface layers, helping to identify areas of subsurface variations and anomalies, including potential indicators of voids and cavities, depending on the soil type and geological conditions of the site. 📍 Suitable for projects: Construction _ Roads _ Infrastructure _ Structures _ Excavation _ Site investigations _ Study of subsurface changes and voids. Note: Detection capability and survey depth vary depending on the soil type, geological materials, site conditions, and study objectives. Therefore, the appropriate technique is determined based on project requirements. RAMSSKO Lab. for Building Materials Testing &Geophysical Surveys Riyadh - Eastern Province - Other cities 📞 +966 (Mobile number appears when you press the contact button) Send us the project location, area, and the objective of the survey to determine the appropriate technique for the project. GeophysicalSurvey - Geophysical Survey Radar Survey - Voids - Void Detection - Gap Detection