Comparing with conventional demolition method by heavy duty cranes or tower cranes, our jacking down methond for demolition of stuck by Taihei Jack System has advantage for a work in limited space within existing plant. In addition to that, our method can reduce a work at high place and it will contribute to safety. Work stop by gale will also be reduced. By our patented demolition method, it is possible to lift down upper side of steel tower and stuck together and work period will be shortened.