When do you need resistance testing?
Whenever an anchoring solution shall be designed but the base material isn't covered by an approval document or technical manuals, but is still similar to one covered in an approval. The anchor's load capacity in this base material is unknown or uncertain, so you need resistance testing to get a basis to start from.
What are the benefits?
- Foundation for efficient anchor design based on real data from the jobsite
- Confidence in the structural integrity of the specified solution
What does the service deliver to you?
1. Test report with:
- Customer and jobsite information
- Fastener and base material information
- Installation and test equipment information
- Test information and test results:
- Test picture and comment per trial
- Load and displacement values
- Load versus time and load versus displacement graph
Displacement measurement enables a qualitative plausibility check based on the load versus displacement relationship. It helps to ensure a more reliable assessment of tests regarding consistency and predictability of anchor behavior.
- Comparison of test trials within the same series
- Comparison of destructive or failed test trials with typical failure curves
2. Evaluation report (optional) with:
Calculated allowable resistance based on:
- British Standard
How do we perform tests to determine resistance?
These tests can be carried out in two different ways:
Destructive tests
If the following criteria apply, destructive tests are the right choice:
- Damage to the base material can be accepted
- Base material is relatively homogeneous
- You aim to achieve the maximal achievable resistance
Destructive tests are tensile tests up to the ultimate load of the anchor.
The minimum number of test trials is based on the chosen testing and evaluation method. Usually between 5 and 15 test trials are needed for a proper evaluation.
Statistical or simplified evaluation according to the chosen evaluation method.
Non-destructive tests
If the following criteria apply, non-destructive tests are the right choice:
- Damages to the base material must be avoided
- Base material is relatively inhomogeneous
- You don't need to achieve the maximal achievable resistance
Non-destructive tests are tensile proof tests to a predefined test load.
The minimum number of test trials is based on the chosen testing and evaluation method. Usually between 5 and 15 test trials are needed for a proper evaluation.
Calculated test load and simplified evaluation according to the chosen evaluation method.