Author : Dalia Mohamed Massoud, Algendy Shaker Algendy and Mohamed Ahmed Mahmoud

The research is trying to find a new suitable strategy to assess the quality of Architectural works in the underground
Metro Stations. Due to the important role which these stations play in crowded cities as Cairo. Applying six-sigma
methodology as it based on rational analysis can achieve a fruitful success in construction field as it succeeded in the
industry. This strategy not only can assess the quality level of Architectural works in the underground Metro Stations but also can discover its defects to ignore it in the upcoming stations. That will eliminate the unnecessary cost and will raise the values of the stations by achieving the high quality level. In addition, it will contribute in developing this great project.

Keywords: Architecture works, underground metro stations, six sigma, rational analysis, quality level.