1. All of the plaintiffs' claims are dismissed.

2. The costs of lawsuit are assessed against the plaintiffs.

1. Basic facts

A. Contract conclusion and completion of construction 1) Plaintiffs and Hansung Construction Co., Ltd. (hereinafter “ Hansung Construction”)

2) The joint contractors (hereinafter referred to as the “joint contractors of this case”) shall be the joint contractors.

(2) On February 3, 2014, the construction (new construction) works ordered by the Defendant and the Defendant are called “instant construction works” (hereinafter referred to as “instant construction works”).

2) As to the construction contract (hereinafter “instant contract”)

)을 체결하였고, 이 사건 공사가 완료된 후인 2015. 7. 13. 설계변경에 따라 계약금액을 정산하는 공사도급 변경계약을 체결하였다. 공사대금 변경을 반영한 이 사건 도급계약의 주요 내용은 아래와 같다. 공사기간: 2014. 2. 7.~2015. 1. 22. 계약금액: 총 9,039,045,633원 토건(건축, 기계, 토목): 합계 8,466,559,123원 소방: 264,120,655원 조경: 308,365,855원 공동계약 내용 공동수급체 대표자: 한성건설 ▷ 공동이행 내용 토건: 한성건설 41%, 피고 동양종합건설 39%, 피고 태왕이앤씨 20% ▷ 분담이행 내용 소방: 피고 태왕이앤씨 100% 조경: 피고 동양종합건설 100% 2) 이 사건 공동수급체는 이 사건 공사를 마치고 2015. 9. 15. 준공검사를 받았다.

B. On March 14, 2014, the Defendant paid KRW 1,553,20,000 as advance payment. After that, the Defendant paid KRW 135,397,304 to Hansung Construction on June 2, 2014, KRW 407,306,480 to the Plaintiff Dongyang Construction, and KRW 222,343,420 to the Plaintiff Taesung C&C respectively, and paid KRW 214,961,670 to Hansung Construction on June 10, 2014, the Defendant additionally paid KRW 41,321,126 to Hansung Construction on June 10, 2014.

Hansung Construction from June 16, 2014.