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Soil Testing
Soil Testing Services
SOIL TESTING SPECIALISTS
As experts in soil testing, we’ll describe procedures for the determination of choosing sites and the sampling of soil from excavations and bore holes for the use of laboratory and field testing. These procedures are always considered in conjunction with those of the designer, ensuring that they obtain a full understanding of soil profiles and their possible effect on the design.
Equipment we provide
- An excavator/drill rig/hand tools of appropriate sizes that are capable of excavation of a pit or bore hole to the designers’ depth usually between 600mm to 1200mm.
- Sampling tubes capable of obtaining of a minimum of 100mm diameter undisturbed sample
- Standard tape measure which will have a minimum length on 2m.
- Standard plastic tape measure of not less than 50m in length.
- Airtight containers or sample bags able to contain up to 20kg of samples.
- If required, power tools, minimum diameter diamond or tungsten drill core apparatus and generator which may be needed to sample and remove drill cores to a depth of about 200mm in length and 100mm in diameter.
- Thermal resistivity equipment that is capable of reading the resistivity of soil to 0.01Cm/W.
- Stainless steel guide tube of a diameter no more than 0.5mm greater than the thermal needle and no more than 20mm longer than the thermal needle.
- If required, location equipment or personnel which are capable of locating underground services.
- If required, GPS/photo location equipment for the location of samples retrieved.
Sampling process
Random sampling is a process whereby we choose and select test locations and intervals for obtaining materials for testing in our laboratory. We start by breaking and dividing each sample location into lots and sub-lots. We recognise that depth and stratification have been ignored in this methodology as the cables are usually placed at specific depths and it is at these depths that sampling and testing will be required.
Lot size specifications
An important factor in our soil testing is determining the length of the lot size that is to be tested. This selection is usually chosen by the designer but if the direction is not given a lot should be no more than 400m in length. We determine sub-lots by establishing the amount and frequency of testing to be performed on a lot. The frequency of testing is usually determined by the soil profile variance that can be expected. If there is no direction from the designer, a sub-lot should not exceed 100m in length or it must be of an equal length as other sub-lots.
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If you have a project needing soil testing, call us today. Our team of experts will provide you with the right information you need to proceed safely and effectively.