Influence of edge distance on the tensile strength of concrete embedded headed anchor bolts

The purpose of the test program was to quantify the effects of edge distance on the tensile strength of anchor bolts embedded in concrete masonry. Only headed anchor bolts embedded in the tops of concrete masonry specimens were tested in tension in this program. The specimens were constructed using Type S mortar and were fully grouted. The bolts were embedded in the "tops" of the specimens, in an effort to simulate construction in which bolts are embedded in the tops of masonry walls.; Testing was accomplished by loading each anchor bolt using a hydraulic ram. Bolt displacements were measured using an LVDT, and plots of displacements versus load were obtained. A total of five different edge distances were used for the tensile loading program. At each of these distances, a total of five replicates were tested.; This thesis reports the results of the testing program, including average ultimate load achieved by each type of bolt for each edge distance; a typical plot of bolt displacement versus applied load and a summary plot of bolt displacement versus edge distance. Also, included are failure modes and comparison of ultimate load achieved with bolt loads calculated using various masonry code provisions.