Duration of the work is one of the essential elements of the contract. For this reason, a provision determining how many days after the date of workplace is delivered, the work should be completed and made ready to the temporary admission should be mentioned in the 9th article of the Standard Construction Contract.In the case when the work cannot be completed and made ready to temporary admission in the determined time, the late fine stipulated in the contract should be exercised for each day delayed. But in force major cases the completion of the work in time as specified in the contract couldn't be possible. In this study giving time extension based upon force major in construction works will be dealt