Window Sampling and Dynamic Probing

Window Sampling and Dynamic Probing

Window sample boreholes can be carried out using either hand held pneumatic sampling methods or tracked percussive samplers.

The highly portable hand held window sample system drives sampling tubes into the ground using a hydraulic hammer and is particularly useful for sites where access for a conventional window sample drilling rig is not possible. Long hydraulic hoses can be used to allow the power supply to be situated away from the working area when working internally within buildings or within basements to alleviate problems associated with exhaust fumes or when working on embankments.

A track mounted window sample drilling rig can sample the soil profile to depths of approximately 6.00 to 8.00m (depending on the ground conditions) and this method of investigation is particularly useful on sites with restricted access and where disturbance needs to be kept to a minimum. Window sample boreholes can be utilised for geotechnical and geo-environmental investigations, installing gas and groundwater monitoring installations and for undertaking Standard Penetration Tests (SPTs).

The track mounted window sample rig is capable of carrying out dynamic probe testing which allows the relative density or strength of the soils to be assessed to depths of around 10m.