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Frequently asked questions

Which anchors should I use for hollow core slabs?

In general, there are not many anchor options that are valid for installation in hollow core slabs. The options are further reduced if the anchor must be approved for such an application. It’s important to remember that although hollow core slabs are made of concrete they have cavities which means the usual expansion anchors are not appropriate.

INDEX A perfect fixing has several solutions in its catalogue for this type of material, with European approvals that guarantee performance in the situation described above. We describe them here:

  • Concrete screw – Code TH/TF:This anchor is screwed directly into a pre-drilled hole in the concrete. During installation, the fixing is screwed directly into the pre-drilled hole which has a diameter smaller than the diameter of the screw, so that the screw is tapping and anchoring its own thread in the concrete.Due to its function, it is not only suitable for this base material but also has European approval for “Anchors for use in concrete for redundant non-structural systems” in accordance with EAD 330747-00-0601.
  • Short female anchor – Code HEHC:This anchor is inserted into the hole drilled in the concrete at the specified diameter. It is then expanded by means of a tool (EXHBM); when a cone located inside the anchor is hit it causes the anchor to be fixed in the concrete. Once installed, a screw is screwed in, which fixes the plate to the base material.Due to its short length, this anchor is ideal for this type of base material. As the anchor is so short, with some exceptions, neither the hollow part of the material nor the prestressed reinforcement will be reached.
  • Hollow core slab anchor – Code HC:This anchor is inserted into the hole drilled in the concrete at the specified diameter. It is then expanded by screwing in a metric screw or a threaded rod. When the installation torque is applied to the nut, the cone expands the sleeve to fit the drilled hole.Given its operation, this is the anchor that offers the best performance in this type of material.

Latest revision: FAQ34 rev0

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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).
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