A. 1) The Plaintiff is E Co., Ltd. (hereinafter “E”)

From the perspective of the Gyeonggi-si, the company that performs reinforced concrete construction works on the construction site of 15 apartment complexes in the Flux City in Gwangju-si. Defendant C is a company that performs G concrete pumps (hereinafter “instant pumps”).

(2) A concrete pumps are installed on a truck, such as the right-hand photograph, with concrete pumps, pipes, and pressure pipes, so that concrete can be conveyed from a concrete mixture truck to a place for the purpose of use through pressure pipes through a pumps, with a booming pipe. However, it is difficult to view concrete in a place for use by the pumps.

Among them, boom booms are part of free movement of pressure pipe, consisting of approximately 8 to 10 meters of length, and 3 to 5 times of length, and it is possible to move like a pipe.

The end part of booming booms is equipped with materials that are made to be wheeled with heavy concrete without plucking or plucking, with a length of 3 to 4 meters, which is fixed at the booms (ND, and shall be released by attaching it from the pumps manufacturer).

Ordinary pumps drivers have purchased extensions that can be used by connecting the sphere with the sphere when the sphere alone does not contact the sphere with the sphere place, and these extensions are light and strengthd with the spVC materials.

3 The pumps of this case are machinery that can pressure boom up to a maximum of 55 meters with booming booming boom-types.

The pumps of this case, such as the right-hand photo around October 2016, cut off the area adjacent to the second group of boom booms, and the rear booms, etc. were generated in the fourth part. D, a maintenance business entity, from October 13, 2016 to November 17, 2016.