Design of Anchorage in Reinforced Concrete Members

Various different anchor types, such as cast-in place anchors, post-installed anchors, adhesive anchors, expansion anchors, hooked bolts and undercut anchors are analyzed in this report. The critical effects of factored loads which the anchors and anchor groups are designed for, are determined by elastic analysis. Seismic effects which include load combinations with earthquake effects are out of this project’s scope.

Discussed in this project, the background of theory, analytical analysis, and design equations provided in this project for determining the performance of a specific anchor have been calibrated from an extensive database of experimental tests which have been conducted over the last 30 years. The equations are designed with a 5% fractile failure level from these tests, meaning that 95 times out of 100, the actual strength of the anchor will exceed the nominal strength which is key in providing a more consistent level of safety for a wider range of failure modes in both cracked and uncracked concrete.

In addition, this report also provides the design process of the same anchor types aforementioned, with design equations, in The American Concrete Institute codes. Key differences and similarities are paid particular attention to and discussed in depth compared to Canadian Standards in this report.