Site Investigation
DW Solutions provides specialist site investigation nationwide to both the private and commercial sectors as well as the construction industry. We have over 25 years of experience in this sector.
Our service includes:
- Soil logging
- Machine and hand-dug trial pits
- In-situ sampling and testing
- Full laboratory testing
- Hand auguring
- Window sampling boreholes
- Drainage surveys
- Installation and decommissioning of test wells
- Root ID
- Deep excavation capabilities
hand held window sampling
Our most portable sampling solution
Our most portable sampling solution On some sites, access is too restricted even for the mini rig. In this situation DW can provide a hand-held window sampling system which enables samples to be removed using the same tubes as the mini rig. This system comprises a hand-held hydraulic breaker with a separate power pack and has been used successfully on slopes of up to 25 degrees.
Hand held window is useful for undertaking soil sampling for environmental and geotechnical purposes. We usually carry out hand held sampling when it is not possible to access a site with a drilling rig due to access or height restrictions. The hand held window sampler consists of a jack hammer powered from a hydraulic power pack. A adaptor allows for the jack hammer to be connected to the window or windowless sampling barrels. The power pack is also used to power a set of hydraulic rams which are used to extract the sample barrels from the ground.
Although it is not possible to undertake in-situ soil strength tests such as SPTs using this system, Hand Shear Vane testing undertaken within the hole can be used for assessing the strength of Clay soils, where necessary.
Depending on the local geology, our hand held window sampler can reach depths of up to 5 – 6mbgl.
ARCHWAY RIG
TRACKED RIG
When a greater depth is needed to be achieved and site access allows we use our archway RIG to obtain undisturbed soil sampled to a depth up to 10m.