What is an anchor pull-out test for? – ETICS

Caution also applies if the drilling method used deviates from that required in the approval, e.g. drilling is carried out with an impact, although the ETA of the washer anchor describes a rotary drill position for the substrate used.

Whenever no load-bearing capacity values are specified in the ETA for the explicitly existing substrate or the selected drilling method, anchor pull-out tests must be carried out. Only with the data from the tests can the proof of the total load-bearing capacity of the ETIC system be provided and thus the required numbers of anchors be calculated.
 

How is an anchor pull-out test carried out?

A special, tested and calibrated extraction device is required for the anchor pull-out test. The test is therefore always carried out by a specially trained EJOT field engineer with the participation of those responsible for the building. At least 15 tests are carried out on different positions of a building when extracting the anchor. In order to obtain as detailed a building assessment as possible, the tests should be carried out in full on the entire facade &#; i.e. on all sides if possible &#; and recorded in a corresponding log.

After the drill hole has been properly drilled taking into account the required drill hole depth, the anchor is set taking into account the (minimum) anchoring depth. This is followed by the actual pull-out test. The extraction device is equipped with special adapters for the respective EJOT products to be tested. The pull-out test is always carried out at a defined and constant speed in order not to falsify the results. This means that the loads are introduced into the anchor by the extraction device and continuously increased until failure occurs. Failure can occur in a wide variety of places, for example in the substrate, i.e. in the actual building material, or in the area of the anchor. The reason for the failure and the load at which the failure occurs are documented in the log.

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Anchor pull testing is usually performed with an objective to measure the performance of the anchor installation and to verify whether it is able to pull out forces or not. 

In simpler terms, it establishes the load capacity strength of fixings that have been installed or fitted into slabs, walls, soffits etc. The concrete anchor pull-out strength testing is essential for commercial buildings, airports, railways or other domestic or industrial settings. 

 

This blog is written with the intention to provide enlightenment about the Anchor Pull testing system. 

What is the Role of Such Testing?

There are countless factors that can influence the strength and durability of anchor bolts, eyebolts, stud anchors, scaffold ties, resin bolts and safety wires. So these factors demand regular inspection, checking, test and certification. 

Anchor pulling testing becomes imperative because visual inspection is not satisfactory when checking the strength of many components. Many things may just betray our eyes so we need to rely on Anchor pulling testing. 

When to Carry Out Onsite Testing? 

You can opt for onsite testing in the design phase and after you have made the installation of a fastening system              

Onsite Testing During the Design Phase

During the design phase &#; the test determines the resistance of a base material and which fastening system to use.

Onsite Testing After Installation

After installing anchor systems, the factors which are determined are quality and safety. This can be needed by the building owners if they want to ensure compliance with local guidelines.

What is the Procedure of Conducting an Anchor Pulling Test? 

Under the pull out testing, you need to attach a suitable test rig to the bolt, screw, anchor or fixing. This then is put under pressure to the designed stress load level so as to determine how strong and secure the fixing is. 

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This testing is highly efficient in diagnosing underlying problems and the experts can offer impeccable technical advice if any discrepancy or failures arises. 

What are the Factors Which Should be Considered While Setting Up the Test? 

Many parameters need to be considered while setting up this test. These factors are mentioned below:

• The capacity of the loading apparatus

• The loading rate 

• The bearing range size

• Anchor embedment depth

 

Note: As the objective of the test is to determine the highest pull out force so in any case, the anchor bolt pull out test equipment should not fail or reflect any movement at the specified load.  

Where all the Anchor Pull Testing can be Applied?         

The application of the anchor pull test can be performed in all types of rocks where the anchor bolts will be installed. When the rock is bedded, schistose or anisotropic then the test can be conducted in many orientations.  

Overall, anchor pull testing is a highly sought-after testing method in the present times. When looking for a reliable provider of anchor pulling tests near you then you can count on Concrete Insight, a perfect platform to meet your project's demand with flawless techniques.

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