עיגון ומיגון

Seismic Approval for Anchors : do you need it, when and how? In today's world, there is a tendency to require seismic approval for anchors for most of the large projects. But what exactly is this certificate? What is its importance? And how should you use it? First, it is important to emphasize that "seismic approval" to a particular anchor confirms that the manufacturer has paid an approved laboratory to inspect the anchor according to a process set in the European standard ETAG Annex E for earthquake. This does not mean that the anchor is "good" or "bad" during an earthquake, it just means that the manufacturer paid for the test. Of course, a manufacturer usually does not spend money on testing an anchor that is less suitable for an earthquake. However, the certificate itself does not promise in any way that the anchor will function properly (comparing to static or semi-static loads) during an earthquake. For example, a  wedge anchor  su