Anchors should be spaced a minimum of ten anchor diameters apart and five anchor diameters from an unsupported edge. Spacing. It might not be commonly acknowledged, but if the sleeve anchors are spaced too close to each other, their holding power may be reduced due to the interaction of forces in the material.

This equation will provide a bit of extra depth to accommodate that small amount of concrete cuttings that perhaps were unable to be retrieved from the hole. The sleeve anchor does not require a maximum hole depth, but the depth of the hole into the base material should be at least the length of the sleeve anchor minus the thickness of the material being fastened. Use the length of the sleeve anchor, which needs to equal the minimum embedment, and then add the fixture thickness, nut and washer lengths. It is necessary to do a few simple calculations when determining the length of the sleeve anchor that will be best for the job. (If not all of the concrete cuttings could be removed from the hole, refer to “Length” section below.) Using a hammer drill and a carbide bit with a size bit equal to the sleeve anchor’s diameter is another critical factor for the most effective expansion.

It’s crucial that the hole is totally cleared of all debris that may have fallen during the drilling process, or the application may not be as secure as possible. When installing concrete sleeve anchors like this one, several tips are recognized by those in the industry that improve the safety of the installation while trimming time and saving cost.Įxpansion. Relying on the time-proven principle of expansion, the sleeve anchor works when the tightened nut pulls the cone-shaped stud end into the expander sleeve, wedging it outward to lock the anchor into the base material of concrete, brick and block materials.

Hilti anchors zip tight