Proof testing and allowable load testing explained

Proof testing checks the quality of an installed anchor; an allowable load test helps establish an allowable load when site or application data is not known. For anchors supporting M&E pipework, ductwork, cable containment or brackets, agree which question needs answering before arranging a test.

• Why anchors installed incorrectly can cause assembly collapse
• The key principles of BS 8539:2012+A1:2021
• Anchor selection
• Supply options
• Installations
• Testing

Anchor installation fail

According to the BS 8539:2012+A1:2021 what type of anchor tests are required after the installation of anchors?

There are generally two different types of tests called for within M&E contracting:

1. Proof Testing (often referred to as a pull test). These are carried out after installation by the contractor and they check the quality of the installation.
2. Allowable load test: where the application involved is not covered by a relevant ETA, or the strength and condition of the base material are unknown, with no published data.
3. Suitability testing will inevitably damage the substrate as anchors may require testing to ultimate load.