To get the most from a ground anchor, it is important to ensure it is in good working order. Grouting Services offers an independent inspection and testing service for for both its own installations and also for third party installations.
Maintenance programmes can be established with asset managers and owners to ensure a testing schedule appropriate to the age of the structure, and anchor type, is maintained.
Visual inspections and testing can be undertaken on historical anchors to verify the integrity of both the exposed anchor elements, and the performance of the anchor relative to design loads. A detailed construction report is provided.
There are typically 3 classes of tests required – On-Site Proving Trial Testing, On-Site Suitability Testing and On-Site Acceptance Testing.
On-Site Proving Trial Testing
On-Site Proving Trial Testing is conducted on trial anchors which are installed prior to the main works commencing and do not form part of the production works. Proving tests are required to verify the designers assumptions made in relation to geotechnical ultimate bond rupture, and maximum acceptable rate of creep. They are also useful in evaluating the expected performance of the production anchors thereby ensuring they are fit for the site conditions found to be present.
On-Site Suitability Testing
On-Site Suitability Testing is conducted on either the production anchors or additional anchors identical to the production anchors. It is normal to conduct suitability tests on at least the first three anchors installed. The data obtained provides a datum point against which the performance of each production anchor can be measured.
On-Site Acceptance Testing
On-Site Acceptance Testing is performed on all production anchors. Testing demonstrates the anchor's ability to withstand a load up to 1.5 times greater than its working load.