European Technical Assessments (ETA)
The European Organisation for Technical Assessments (EOTA) is the body that issues Technical Assessments (ETA) within the European Union. They are similar to the South African bureau of Standards (SABS) except that the assessments cover multiple European Member countries. If a product has an EOTA assessment, it also allows the manufacturer to place a CE mark (Attestation of Conformity) on the product.
There are 12 options of EOTA assessments, 6 for cracked concrete and 6 for non-cracked concrete. Options 1 - 6 are for cracked concrete, with Option 1 being the highest level for this category. Options 7 - 12 are for non-cracked concrete, with Option 7 being the highest level for this category.
All of fischer’s anchors that have an ETA assessment with either an Option 1 or Option 7 and have passed the most stringent of the prescribed tests. In is vitally important to note which EOTA option a manufacturer has used when testing their anchors, as an Option 2 is not as intensive as an Option 1 and an Option 8 is not as intensive as an Option 7.
The anchor must fulfil these requirements:
- That the anchors predicted life is at least 50 years.
- The anchor should work in a temperature range of -40°C to +80°C.
- The anchor should behave in a predictable manner.
- The displacement of the anchor shall remain within preset limits.
- Anchors should not fail by breakage or cause the concrete to fail during the installation process.
- The anchors characteristics should not change during the lifetime of the anchor.
A brief list of the tests required for Option 1 is as follows:
- Tensile test with no edge or spacing influences. (4 tests – 2 different concrete strengths, with and without a 0.3mm crack)
- Shear test with no edge or spacing influences. (4 tests – 2 different concrete strengths, with and without a 0.3mm crack)
- Combined tension and shear with no edge or spacing influences. (4 tests – 2 different concrete strengths, with and without a 0.3mm crack)
- Spacing for characteristic tension resistance.
- Edge spacing for characteristic tension resistance.
- Shear resistance in non-cracked concrete for pry-out failure.
- Shear resistance in non-cracked concrete close to an edge. (2 tests for different concrete strengths)
- Shear resistance in cracked concrete close to an edge.
- Spacing and edge distance for characteristic shear resistance.
- Minimum edge distance and spacing.
Option 7 is the same list with just the tests with the 0.3mm crack removed.
In addition to the tests above the following criteria will be assessed:
- Crack movement tests.
- Repeated load tests.
- Sustained load test.
- Torque tests.
Partial safety factors are also evaluated from the results if the installation safety tests. This safety factor covers the following installation issues:
- Cleaning of holes.
- Moisture content in the concrete.
- Undercutting in the case of undercut anchors.
- Installation torque.
- Expansion of deformation-controlled and undercut anchors.
- Mixing of mortar in the case of bonded anchors.
- Striking of reinforcement.
The fabrication method (e.g. cold forming, machining, quenching, hardening) shall also be tested.
The factory production control and quality control is also taken into account especially with the allocating the Attestation of Conformity (CE mark).