ULTIMATE RESISTANCE OF VERTICAL SQUARE ANCHORS IN CLAY

Laboratory model test results for the ultimate pullout resistance of square vertical anchors in saturated clay are presented. Pullout resistance can be expressed in the form of a nondimensional breakout factor. The breakout factor increases with the embedment ratio of the anchor up to a maximum value and remains constant thereafter. A tentative empirical procedure, based on the laboratory test results, for estimating anchor pullout resistance is outlined.