METHOD FOR DEMOLISHING BUILDING

PURPOSE: To prevent the scattering of asbesto and fiber pieces at the time of demolition by filling the foam, which is generated by the surface active agent and the air and which has viscosity, into a building to be demolished, or directly supply the foam to a chipping or a crush part of the structural body. CONSTITUTION: The foam 13 generated by a foam generating device 10 is supplied to an inner space of a building 01 to be demolished through a foam supplying hose 11 and a nozzle part 12, and the inner space is filled with the foam, and the foam is sprayed to the surface of a structural body 02. In this case, the foam is adhered to the surface of the asbesto 03 for intrusion, and the persistence is secured by the viscosity of the foam 13 so as to restrict the put-out of foam, and the foam condition is thereby maintained. The foam 13 is supplied to the depth of the space of the building 01, and the foam 13 is intruded into the surface of the asbesto 03 by the time of demolition and chipping. The demolishing work with a chipping tool 07 is performed, and the fiber pieces of the asbesto 03 and the crushed pieces of the concrete generated with the demolition are covered with the foam 13 so as to prevent the scattering thereof to the atmospheric air. The influence to the human body of workers and passers-by can be thereby reduced.