U100 Samplers
The quality class of sample needed to conform to the client’s testing requirements should dictate the category of sample used” (BS5930:2015 Ch20.1). The length to diameter ratio needs to be less than 1:20 to conform.
The U100 Series comprises several components which depending on their selection provides class 1, 2 & 3 samples in accordance with BS EN ISO 22475-1 and Eurocode 7.
In fine soils undisturbed sampling is often practicable using the following tooling to allow samples to be taken for testing strength and stiffness.
The three types of sampling systems are as follows:
1. U100 Standard system (OS-TK/W)
2. U100 Plastic liner system (OS-TK/W)
3. U100T System (OS-T/W)
Specifications:
Type | Max O.D. * | Min. I.D.* (mm) | Area Ratio |
Standard System | 118.6 | 104.4 | 29% |
Plastic liner System | 123.8 | 101.6 | 48% |
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* Dimensions measured on the cutting shoe
Please see the diagram.
Standard system:
1. Sample tube (cadmium- plated steel or aluminium).
2. Corecatcher (optional)
3. Cutting shoe (plain or serrated edge)
Plastic liner system
4. Steel body tube (enclosing plastic liner).
5. Corecatcher (optional)
6. Spacing ring
7. Cutting shoe (plain or serrated edge)