concrete cutting blades with the accelerated pace of urbanization, rapid urban construction. Big cities, the ground has been unable to meet the transport needs of urban traffic extending up to the elevated light rail, extending down to the subway. Some elevated for now the city has become a constraining factor in the development. These elevated carry out alterations inevitable to dismantle part of the affected part while also ensuring and reuse, which has become a problem in front of us. When conventional demolition construction can not do anything, advanced construction cutting disc has a safe, efficient, environmentally friendly features.