Experimental and analytical investigations focusing on shear span ratio, structural details of hoops, and ratio of main bars were conducted for the purpose of appropriately evaluating the bearing capacity of existing cast-in-place piles, which are the most common type of existing pile foundations. As a result, it was found that the evaluation of shear capacity of cast-in-place piles can be made on the safe side by applying the shear span ratio to the shear capacity of concrete. In addition, it was found that even when hooks are not provided, the shear reinforcement effect is also effective.
