CONSTRUCTION FIXINGS Guaranteeing simple installation
Dr. Harald Göttlich, CEO, Universal Innovative Products GmbH & Co KG The ‘undercut anchor’ has been on the market for a long time.
But all previous anchors have had a number of weaknesses such as being too complex to assemble; need expensive assembly equipment or cannot be used within certain materials.
T he ubolt® -FUA undercut anchor however is uniquely shortest embedments the ubolt®
simple to install; it does not need a torque wrench or any fancy installation tool. In fact the simple setting method itself guarantees the proper setting. Even in the -FUA undercut anchor achieves
the highest guaranteed load performance, meaning that for most applications the ubolt®
-FUA undercut anchor will fulfil all
regulatory functional demands. If the structural substrate is covered by either a soft decorative
material (like stucco used around a window sill) or a wall insulation material, then standard anchor installation methods will fail. For these types of critical installation a second setting method may be used with ubolt®
-FUAs. The basic objective of this type of installation is to set the ubolt®
behind the soft material, without increasing the drill diameter and without using any complicated tools. The main difference between the ubolt®
-FUA standard
installation method and the method used for these deeper installations is that before installation the specific drilling depth for the ubolt®
-FUA anchor has to be calculated. The drilling into the solid substrate means that the ubolt®
depth calculation is simply the sum of the anchor body length (sleeve) plus the thickness of the soft surface material. After drilling to the calculated depth, the anchor and wedge are pushed to the bottom of the hole and the anchor installation is completed by hammering the wedge into place. Hammering the wedge forces the undercut to be generated in a very reliable way and at exactly the correct point of installation, even behind non- structurally strong layers. “The two very easy to use installation methods for installing -FUA undercut anchor at different hole depths -FUA undercut anchor can fulfil virtually -FUA is perfect for cladding
the ubolt® all application demands. ubolt®
applications, curtain-wall and facade installation or renovation work and for many other fixing problems.”
Tecfi achieves ETA accreditation
DXE steel expansion anchors with conical nut, from Tecfi S.p.A, recently achieved the ETA-CE Approval according to Guideline ETAG001 - Part1, with option 7 to be used in non-cracked concrete.
The ETA 10/0453 certification covers the whole pre-positioned anchorage DXE range: • DXE00 with conical nut and sleeve. • DXE01 with hex head 8.8 grade. • DXE03 with stud 8.8 grade. • DXE04 with mushroom head 8.8 grade, 6-lobe recess.
The guideline ETAG001-Part1, Guideline for European Technical Approval -
Metal Anchors to structural applications, requires a number of tests carried out by certified laboratories and the fulfilment of minimum requirements for the anchors even in extreme conditions. Tecfi explains that thanks to a careful selection of materials and to the
geometry of each component, its steel anchor DXE has not only exceeded the minimum requirements of the guideline, but it has also achieved excellent performance under tension and shear loads. Tecfi S.p.A highlights that it has continuously invested in the quality and
certifications that are mandatory for construction products, and has achieved several certifications in the last few years including:
• ETA 10/0060 for Tecfi High performance HVE Rock, option 1 to be used in cracked and non-cracked concrete.
• ETA 08/0058 for the whole range of DSE steel anchors, option 7 to be used in non-cracked concrete.
• ETA 10/0102 and ETA 10/0103 for bonded anchor with anchor stud and rebar connection, option 7 to be used in non-cracked concrete.
• SOCOTEC Approval for polyester resin ME01. • UL Approval for nylon cable ties JK and JR.
74 Fastener + Fixing Magazine • Issue 68 March 2011
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