The Michie Stadium is located at the U.S. Military Academy at West Point, New York. The West Stands of the stadium, consisting of upper and lower tier seating and other facilities, are supported on columns which are founded on shallow footings resting mainly on shallow bedrock. A structural seismic assessment of the West Stands indicated that uplift of the foundations would occur during a seismic event thereby causing significant distress to the superstructure. In order to prevent the uplift of the foundations and to provide base fixity, it was proposed to install rock anchors through the foundation. A supplementary subsurface investigation program consisting of borings and test pits was carried out to estimate the bedrock elevations and characterize the bedrock. In addition, full-scale anchor pull-out tests were performed to evaluate the bond-strength between the anchorage and rock interface. This paper will present the design of the anchorage system including the concrete reaction ring installed around the base of the column and the rock anchor system. The paper also includes the results of the full-scale anchor tests and modifications that had to be made to the design during construction due to unforeseen foundation conditions
