Amplus is an Associate Member of the Association of Geotechnical and Geoenvironmental Specialists
Amplus is a member of the ECO-ACTIVE BUSINESS environmental accreditation scheme
Amplus drillers are trained in accordance with BDA and CITB guidelines.
Generally the following site investigation techniques are employed for the majority of projects:
Window Sampling and Dynamic Probe Testing
Rotary Cored Boreholes
Rotary Percussive Boreholes
Trial pitting can be carried out by a variety of methods from hand dug
pits to machine excavated trenches. Trial pitting is generally carried out to a maximum depth of 4.5m with standard excavation plant and, depending on soil conditions, is generally suitable for most low rise developments.
All trial pit investigations are supervised by experienced engineers with a thorough understanding of geology and soil mechanics.
Window sampling is carried out by hand held pneumatic samplers. Window sampling is particularly suited to restricted access sites, contamination investigations, and where disturbance must be kept to a minimum. back to top
Boreholes are a common method of site investigation. Using a vehicle-towed rig most sites can be investigated. In-situ testing techniques including Standard Penetration Testing, Permeability Testing, Borehole Vane Testing and Packer Testing can all be carried out in the boreholes in order to provide information for geotechnical design. Continuous disturbed and undisturbed samples are retrieved from the boreholes for inspection and logging by engineers and subsequent testing in our laboratories.
Rotary Cored Boreholes
Rotary drilling techniques are employed where boreholes are required into very dense gravel or bedrock. Samples of bedrock are recovered in seamless plastic tubes for subsequent logging by a suitably qualified engineer and for laboratory testing.
Amplus owns versatile drilling rigs, such as the Fraste Multidrill XL Max rig, and the Fraste PL rig that can recover high quality core samples in both soil and rock conditions.
METHOD STATEMENTS FOR SITE INVESTIGATION
Click below to download the following method statements:
- Excavation of Lead Pits
- Trial Pits
- Boreholes - Rotary
- Boreholes - Rotary Percussive with Slotted Casing
- Open Hole Flight Auger
- Dynamic Sampling
- Piezometer Installation
- Locating Cables with a Cable Avoidance Tool
GROUND INVESTIGATION CAPABILITY STATEMENT IN ACCORDANCE WITH BS5930
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