1. Defendant Hysung Ho Construction Co., Ltd.: (a) KRW 168,317,718 and its amount from July 15, 201 to December 11, 2014 to the Plaintiff.

1. Basic facts

A. The Geum River Industry Co., Ltd. (hereinafter referred to as the “Gang River Industry”) started and completed the construction on February 9, 2007 and completed the construction on December 31, 2008, when it was awarded a contract from the Plaintiff for the construction of the road in this case (the overlapping sections of the Dong-Sung River Zone 2).

In accordance with the construction contract, the Geum River industry installed a reinforced soil retaining wall (hereinafter referred to as “the retaining wall of this case”) and a drainage facility on the part of the road of this case in accordance with the construction contract.

B. The Defendant Korea Land and Housing Corporation (hereinafter “Defendant Corporation”) has undertaken a housing site development project in the Yellow Doyang 2 area. The project was included in a project to create a memorial park in the hinterland according to the retaining wall of this case.

Defendant Ringle Construction Co., Ltd (hereinafter referred to as “Defendant Pingle Construction”) contracted from Defendant Construction to remove earth and sand on the site of Seoba Park from the site of Seoba Construction, and completed the construction on February 19, 2009.

Defendant Masung Construction Co., Ltd (hereinafter referred to as “Defendant Masung”) contracted by the Defendant Corporation with the construction work for the construction work for the soft Park with the content of organizing earth and sand, construction of boundary stone, and piling up natural stone, etc., and completed the construction work on March 11, 2009.

C. Among the retaining wall of this case, a collapse accident occurred in some sections of the retaining wall of this case) The drainage system structure of the part of the retaining wall of this case, along the drainage system of the part of the retaining wall of this case, there exist inside and outside drainage facilities (e.g., the water level, the water level, the water level, the water level, the lower part, etc.) to discharge water flowing into and out of the reinforced soil. There are five drainage fume, which connects both the house correction and the manle, and the drainage fume all are connected to the manle. Among them, as seen below, the inside fume (the diameter of 450 meters, length of 2.5 meters, length of 2.5 meters, thickness of 65 meters, and length of 65 meters.