2. The costs of appeal are assessed against the Plaintiffs.

Purport of claim and appeal

1...

2. On January 2, 2015, on the date of three amendments in the table following Chapter 4, Chapter 15, of the judgment of the court of first instance (hereinafter referred to as "C"), "F 12.12.12.1.2.2."

Forms 4 through 11 of the decision of the first instance shall be followed in accordance with the following subparagraphs.

1) The plaintiffs' assertion (A) The plaintiffs asserted that the contract for the construction of this case was entered into, under the premise that the temporary materials should be used for six months from October 1, 2013 to March 31, 2014, the unit price was determined by applying the loss rate of 30% of the strong price according to the standard construction cost, but the contract was awarded due to the reasons attributable to the defendant, but the period of use of the temporary materials increased from October 1, 2013 to November 30, 2015.

② However, the Defendant used the temporary materials to the Plaintiffs for a total of at least one year, including the period of initial scheduled temporary materials, during the period from April 1, 2014 to December 31, 2014, and paid an amount equivalent to 30% of the amount calculated by deducting the amount equivalent to 70% of the amount of steel price already paid according to the loss ratio applied when using the temporary materials for at least one year in accordance with the Standard Cost of Construction Works.

(3) However, even if the plaintiffs calculated the unit price of the tuition fee based on the standard pinsem, if the construction period has increased due to the reasons attributable to the defendant, the indirect construction cost should be calculated on the basis of actual expenses. Since the plaintiffs leased the relevant construction instead of purchasing the steel to be used in the instant construction, the plaintiffs have increased the construction period due to the reasons attributable to