1.The judgment of the first instance shall be modified as follows:

The defendant shall pay to the plaintiff KRW 1,647,00 as well as to the plaintiff on January 2, 2014.

1. Basic facts

A. At around 2014, the Korea Atomic Energy Fuel Co., Ltd. contracted the type of “construction” among the above construction work to the Defendant, and the type of “electric and fire-fighting construction work” to the Defendant, and the type of “communication” to the Defendant, respectively.

In addition, the mountain, mountain, mountain, mountain and mountain construction industry and B subcontracted the part of the waterside construction to the plaintiff.

B. Of the parts subcontracted by the Plaintiff, the fairness order of the floor construction, which is part of the subcontracted part, was planned as ① painting (former: Defendant, Communications: C), ③ installation of telecommunication franchises on the floor (former: Defendant, Communications) and ③ installation of double-bropets and carpets (Plaintiff), ④ installation of the floor telecommunication strings and strings on the floor (electric: Defendant, Communications: C).

However, due to the on-site circumstances, the construction of flass and kpets was conducted first, and thereafter the construction of telecommunications was consulted after forming part of the floor board board in which the defendant and C are installed.

C. The Plaintiff started floor construction. On November 2, 2014, the Defendant requested the Plaintiff to perform other construction work that the Defendant should have to do as floor construction work, and the Plaintiff accepted it and performed other construction work over approximately two weeks.

(hereinafter “instant other work”). D.

원고의 바닥 공사가 끝나자 피고 및 C은 원고가 설치한 바닥 판넬타일 및 카펫 일부를 들어내고 바닥 하부에 전기통신 배선 설비 공사를 시행한 후 들어낸 판넬타일 및 카펫을 재설치하였는데, 그 과정에서 원고가 설치한 판넬타일 중 일부가 훼손되고 재설치된 판넬타일의 균형이 맞지 않으며 밟을 때 삐걱거리는 소리가 나는 등의 현상이 발생하였다.

【Ground of recognition” has no dispute, and evidence A Nos. 1 through 25 has been set forth in the first through 1.