It is advisable to apply bitumen paint to the area where the column and the tie make contact. This will avoid the likelihood of any corrosion on the column due to the contact of two dissimilar materials.
The ACS column tie exceeds the requirements of a Type 2 tie to DD140.
The ACS column tie eliminates the process of site drilling and bolting otherwise associated with the installation of 3000 range frame cramps to structural columns. The column tie is available in Austenitic stainless steel grades 304 (BS EN 1.4301) and 316 (BS EN 1.4401) and exceeds the requirements of a Type 2 wall tie according to BS EN 845-1.
The column tie is supplied as a 150mm length as standard, the size of the notch in the tie is determined by the column flange thickness, please use the table (right) to specify the correct tie.
| Column Flange Thickness
| 9 – 11mm
| 11 – 13mm
| 13 – 17mm
| 17 – 21mm
Installation & Best Practice
Below is a typical plan view of a cavity wall with ACS column ties installed, the column tie can be used to restrain the inner or outer leaf of masonry to the flanges of the structural column and should be installed at 225mm vertical centres. The inner and outer leaf of masonry can then be tied together using suitable cavity wall ties. When installing the ACS column tie ensure the tie is engaged at least 10mm into the column flange.
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