Anchor systems used in concrete structures are critical in all types of applications, including infrastructure (bridges, tunnels, and dams), industrial structures (heavy machinery footings, nuclear power plants) and residential projects (pipes attached to the wall or the ceiling). They must be reliable and durable, manufactured and designed to ensure of their intended application. Our industry partner-Simpson Strong-Tie (SST)’s- years of experience in the field has shown that more often than not, the hole is drilled at the wrong location for anchor installation. We are testing anchors installed in concrete slabs to establish any reduction effect that an adjacent abandoned hole may have on concrete anchor tensile capacity. Two types of anchors: torque-controlled mechanical anchors and adhesive anchors with different diameters, embedment depths from different manufacturers will be tested to build a database. The test results will be first statistically analyzed. Then, Finite Element Models (FEM) based on elasticity theory, plasticity theory, bond-slip relationship, and fracture mechanics will be developed and validated by the results.