The ACS 31/21 AXIS Curve Channel, Cast in Channel and T Head Bolt Assembly is a unique patented system. The design provides support and/or restraint to secondary products that fix back to a concrete structure. Also, it does this without the need for drilling and post-fixing.
The channel provides continuous adjustment along its length via the Curve T Head Bolt. This allows for normal site tolerance and disassembly as appropriate. The system’s design specifically suits Masonry Support and Windpost applications. But it is a multipurpose, medium duty channel that can readily be used in various static loading applications across a range of industries.
We typically supply the Curve system in standard three-metre lengths. However, we can also supply in short lengths or special welded corner, angle or radiused fabrication details to suit specific site requirements.
The 31/21 Curve is a medium duty cast in channel that provides a load capacity exceeding that of a standard 38/17 rectangular channel section, and uses considerably less material. The channel is therefore a cost effective alternative to a 38/17 or other equivalent predecessors. The ACS 31/21 Curve is intended for use in reinforced concrete with a minimum compressive strength class of C20/25 or greater. The channel assembly consists of the Curve channel section, which is supplied complete with concrete anchors attached to the back of the channel profile and a specially designed T Head Bolt.
The channel is fixed to the formwork prior to casting of the concrete. Once the formwork is struck the cast in channel provides a slot to allow secondary structural components to be fixed via the use of a specially designed 31/21 T Head Bolt.
The key advantages of a cast in channel include; infinite adjustment along the length of the channel whilst preventing the need for site drilling to post fix components.
THE CURVE SYSTEM
ACS Curve Channel is available as a standard 3000mm length with crimped anchor pairs fixed at 220mm centres or stud anchors at 150mm. Alternative short lengths can be supplied for specific applications.
The Curve system also consists of a specially designed Grade A2 – 70, M12 x 50mm T head bolt. All components are designed and manufactured using Grade 304 Austenitic Stainless Steel (EN 1.4301) in line with BS EN 100088, BS EN ISO 3506 and ETAG 001.
The standard Curve system provides a permissible load capacity (FPERM) of 8.5kN in tension, shear or combined loading criteria at nominal centres and spacing in C20/25 reinforced concrete.
Cast in channels are spilt into 2 groups, self-anchoring & welded anchor types. Self-anchoring channels are predominantly used for restraint ties whilst channels with welded anchors are used for heavier loadings such as fixing masonry support. Cast in channels offer continuous adjustment longitudinally and can eliminate the need for site drilling thus reducing labour on site.
Surface fixed channels are generally used for restraint ties. They may be bolted back to masonry, concrete, steelwork and steel studding with appropriate fixings. Usually installed in continuous lengths to allow the secondary fixer continuous adjustment longitudinally when installing masonry ties.
Plain back channels may be used for supporting or restraining masonry. These channels are mainly welded to either steel columns or beams during fabrication and prior to treating the steelwork to increase the life expectancy. Plain back channels again offer continuous adjustment longitudinally and can eliminate the need for site drilling thus reducing labour on site.