Abstract: A concrete placing apparatus comprises jacks arranged in line along a wall to be erected, and U-shaped frames mounted on these jacks and connected with each other by scaffolds positioned along and on both sides of the line of arrangement of the jacks. The apparatus also includes driving carriages disposed on the scaffolds for movement therealong. Each carriage carries a feed hopper, a moulding board, and a concrete compacting means. According to the invention at least one of the moulding boards is provided with a drive for moving it in the direction transverse to the line of arrangement of the jacks. This drive is connected with the moulding board by means of a rod. The concrete compacting means is constructed in the form of a vibrating chute positioned under the feed hopper and above the moulding board and provided with a vibrating means for oscillating this chute along the direction of movement of the moulding board.