Load relaxation and anchor testing

01 May 2011

By Mark Salmon, Independent Fixings Consultants

Ref: FFM691105/80

In the Technical Analysis paper entitled Tightening torques explained (ref: FFM671101/66), Mark Salmon outlined the relationship between tightening torque and clamping force and introduced the idea of Load relaxation. In this article he follows this up by explaining how this can affect anchor testing in general, why it is particularly significant when testing resin anchors and why it should be born in mind when selling them.