Designing a post-fixed anchor can be a convoluted process, principally due to the number of variables involved when considering its use in any given situation. The anchor itself could be resin-based or mechanical, with this choice guided by the material it is to be fixed into and the required loads.
Technical Guidance Note Level 1, No. 29 Post-fix anchors provides an introduction to these fixings, and readers of this note should ensure they are familiar with the concepts discussed.