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Frequently asked questions

Can an expansion anchor be retightened to its nominal torque once installed?

An expansion anchor must be installed using a calibrated torque wrench and by applying the installation torque stipulated in the applicable documentation.

After a few minutes, the preload between the expansion element and the base material will loosen. This effect can be checked by re-applying the nominal torque to the anchor, which will turn again. This effect does not mean that the anchor is incorrectly installed. However, if the anchor does not rotate when retightening at nominal torque, it is a symptom that the anchor was initially installed with too much torque.

In any case, the anchors do not have to be retightened after installation.

Furthermore, expansion anchors should only be installed with torque wrenches; the use of impact machines is only recommended for concrete screws provided it is specified in their applicable documentation and the power limit is observed where necessary.

Latest revision: FAQ10 rev0

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Técnicas Expansivas S.L.

CIF: B-26220491

P. I. La Portalada II, C/ Segador, 13

26006 · Logroño (La Rioja) · SPAIN

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TECHNICAL TRAINING

Our engineering department provides specific and personalised training on the different topics related to fixing systems: metallic or chemical fixings, installation systems, regulations, calculations, etc.

 

TÉCNICAS EXPANSIVAS S.L. informs that the personal data provided voluntarily on this website will be processed and incorporated into the corresponding files, responsibility of TÉCNICAS EXPANSIVAS S.L, is reported at the time of personal data collection, although, according to the specific case, its purpose may be any of the following: attention to your referred request, complaint or question, established relationship maintenance, comprehensive and commercial customer management, accounting and billing or sending communications, including electronic media, news and activities related to TÉCNICAS EXPANSIVAS S.L.

The data in our files are strictly confidential and shall be treated with the utmost confidentiality and shall comply with all the requirements provided for the General Data Protection Regulation (GDPR) 2016.

According to Data Protection legislation, you are strongly advised not to send high-level personal data, such as those relating to health, as they are not encoded or encrypted. Should these details be sent, it is done so under your sole responsibility.

The user may at any time exercise their rights of access, rectification, cancellation and opposition under the provisions of the General Data Protection Regulation (GDPR) 2016 by sending a letter together with a photocopy of your ID, to P.I. La Portalada II | c/ Segador 13, 26006 | Logroño (La Rioja).
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site visits

The relationship with our customers does not end with the sale of our products. At INDEX® we understand that it is often necessary to accompany them on site, where our experience is the best ally to ensure fits works perfectly. Our engineers and technicians support the managers of each project in planning and selecting the best solution for effectively saving time and money.

TÉCNICAS EXPANSIVAS S.L. informs that the personal data provided voluntarily on this website will be processed and incorporated into the corresponding files, responsibility of TÉCNICAS EXPANSIVAS S.L, is reported at the time of personal data collection, although, according to the specific case, its purpose may be any of the following: attention to your referred request, complaint or question, established relationship maintenance, comprehensive and commercial customer management, accounting and billing or sending communications, including electronic media, news and activities related to TÉCNICAS EXPANSIVAS S.L.

The data in our files are strictly confidential and shall be treated with the utmost confidentiality and shall comply with all the requirements provided for the General Data Protection Regulation (GDPR) 2016.

According to Data Protection legislation, you are strongly advised not to send high-level personal data, such as those relating to health, as they are not encoded or encrypted. Should these details be sent, it is done so under your sole responsibility.

The user may at any time exercise their rights of access, rectification, cancellation and opposition under the provisions of the General Data Protection Regulation (GDPR) 2016 by sending a letter together with a photocopy of your ID, to P.I. La Portalada II | c/ Segador 13, 26006 | Logroño (La Rioja).
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ENGINEERING SERVICES AND CALCULATIONS

At INDEX® we want to offer our customers the most comprehensive service. In addition to providing them with the best fixing and anchor solutions, our team of specialised engineers technically advises all our customers. We also have powerful software tools to do any necessary calculations with total accuracy.

TÉCNICAS EXPANSIVAS S.L. informs that the personal data provided voluntarily on this website will be processed and incorporated into the corresponding files, responsibility of TÉCNICAS EXPANSIVAS S.L, is reported at the time of personal data collection, although, according to the specific case, its purpose may be any of the following: attention to your referred request, complaint or question, established relationship maintenance, comprehensive and commercial customer management, accounting and billing or sending communications, including electronic media, news and activities related to TÉCNICAS EXPANSIVAS S.L.

The data in our files are strictly confidential and shall be treated with the utmost confidentiality and shall comply with all the requirements provided for the General Data Protection Regulation (GDPR) 2016.

According to Data Protection legislation, you are strongly advised not to send high-level personal data, such as those relating to health, as they are not encoded or encrypted. Should these details be sent, it is done so under your sole responsibility.

The user may at any time exercise their rights of access, rectification, cancellation and opposition under the provisions of the General Data Protection Regulation (GDPR) 2016 by sending a letter together with a photocopy of your ID, to P.I. La Portalada II | c/ Segador 13, 26006 | Logroño (La Rioja).
Read more