A method of repairing and reinforcing a pier using stones. The method includes
installing a watertight caisson around a pier and removing water from the gap between
the caisson and pier prior to repairing the pier. The method can also include removing
impurities from the pier's surface; arraying a plurality of reinforcing steel bars
around the pier; laying stones outside the arrayed steel bars while fixing the
stones to the steel bars or the pier, and filling the gap between the pier and
the stones with concrete.