Take note of the following checklist for a reputable contractor to do your concrete retaining block (CRB) block wall installation and the materials utilised on site:

• All materials intended to be utilised in the construction of the wall are to be submitted to the engineer for approval, prior to utilisation.
• DPC density test results to be recorded and approved.
• Placed on-site concrete to be strict to specification.
• Location plan for testing sites to be provided.
• Notify engineer of tests to be conducted for oversight, where required.
• Ensure that CRBs  on site are the specified strength and size. 
• Follow the installation instructions provided by Terraforce. 
• If specified, submit sample and spec-sheet of geogrid/geofabric.
• Install geogrid/geofabric to protrude slightly beyond the blocks for inspection, to be trimmed off after final structural inspection.
• Setting out of foundation and profile of the wall preferably to be undertaken in the presence of the client or his engineer.
• Proposed wall position to be clearly marked and confirmed in writing, with a photo record to avoid unnecessary disputes.
• Always ensure that the supplier of your Terraforce blocks is reputable and a licenced manufacturer, able and willing to provide adequate design back-up, or who can refer you to a qualified engineer.

For more information, contact Terraforce:
Tel: +27 21 465 1907
Website: https://www.terraforce.com/

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