A study on the renewal construction of office building exterior

Since the curtain wall system was used extensively in office buildings, this study focused on the office buildings with curtain wall system. Nine renewed curtain walls of office buildings were investigated. A complete analysis was thus achieved after the investigation and the reasons of renewing the exterior wall of office building were stated on the following factors: social demands, physical performance, legal limitations and financial conditions. Furthermore, the way of renewing exterior wall could be clarified and realized with four processes: investigation (before renewal work), design, construction and completion of work.