Cone Penetration Testing Services
What we do
Cone Penetration Testing (CPT) is a fast, reliable in-situ ground investigation method. A specialised cone-shaped probe is pushed into the ground at a constant rate while continuously measuring resistance. This provides a detailed, near-continuous profile of the soil layers and their engineering properties without the need for extensive sampling.
CPTu (also known as piezocone testing) is an enhanced version of CPT. In addition to measuring tip resistance and sleeve friction, it also records pore water pressure. This extra data significantly improves soil classification and allows better assessment of soil behaviour, particularly in soft clays, silts, and other fine-grained materials.
CPT and Mag (also known as Dual Cone testing) combines Cone Penetration Testing with a magnetometer in a single push.
As the cone is advanced into the ground, it simultaneously collects standard geotechnical data (tip resistance, sleeve friction, and pore pressure) while detecting magnetic anomalies from ferrous objects such as unexploded ordnance (UXO), buried metal, pipes, or foundations.
An Intrusive Magnetometer Survey (also known as an Intrusive UXO Survey) is a specialist CPT-based investigation used to detect buried ferrous metal objects, particularly unexploded ordnance (UXO)..
CPT for Obstruction Testing uses Cone Penetration Testing to identify and locate underground obstructions such as buried structures, hard layers, debris, or dense materials that could interfere with construction.
All CPT tests are conducted in accordance with ISO 22476-1.