PROBLEM TO BE SOLVED: To provide an indoor RC wall demolition apparatus loadable by the elevator of a building and suitable for renewal construction.;SOLUTION: This indoor RC wall demolition apparatus 1 comprises: a wall saw 3 having a blade; a rail 4 for laterally moving the wall saw; an attachment 5 oscillating at a desired angle through the rail and freely movable in the longitudinal direction and freely rotatable in the circumferential direction; a base machine 6 as a rigid casing for vertically movably supporting the base of the attachment; and a moving means 7 capable of moving the base machine. The base machine comprises an extensible support to provide a reaction force by abutting on a floor and a ceiling. A blade 2 comprises a cover 12 which surrounds the blade and one end opening part of which is brought into contact with a wall. A water supply/discharge device 13 for supplying water into the cover when the cover is cut and so discharging water that the water does not leak to the outside is installed in the cover 12.;COPYRIGHT: (C)2009,JPO&INPIT
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