Testing Standards

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Quality Validation and Verification

CON-FORM's proposals are designed, proposed and checked in accordance with the following standards:

• Building Research Establishment (BRE) Digest 63
• BS 8004 – 'Code of practice for Foundations'
• BS 8002 – 'Code of Practice for Earth Retaining Structures'
• BS 8110-1 – 'Structural use of concrete'
• Specification for Highway Works

The suite of tests available are wide and very varied and the suitability of the tests selected will depend on the type of soils, the ground conditions encountered and the planned end application of the site after the works have been carried out.

Testing required on any site can therefore be split into four phases:

1. Site Investigation Phase

   Desk top studies identifying prior usage of the site, chemical analysis, Moisture Condition Values (MCV), Particle Size Distribution (PSD), liquid and plastic limits, stress and shear testing.

2. Pre-Construction Phase

   Similar tests to the site investigation phase to verify the findings and provide up to-date information to support the binder mix selection.

3. Construction Phase

   Chemical analysis, Nucleur Density Meter (NDM), Californian Bearing Ratio (CBR), tray spread checks, depth checks, plate bearing tests, stress, shear tests (if material is cohesive), dynamic cone penetration (DCP) (if material is granular), MCV and settlement data.

4. Verification Phase

   Chemical analysis, NDM, CBR and plate bearing tests. Results are analysed to confirm that contamination levels, where appropriate, are within acceptable levels and that the re-engineered material has met or exceeded the specifications required. A detailed verification report is then developed for submission to the client.