An earthquake measuring 7.3 on the Richter's scale occurred at certain regions in Taiwan in the early morning on Sep. 21, 1999. After suffering form the earthquake, the residents in the regions of the disaster were settled in temporary shelters, which later developed into the mid-term and long-term shelters for the residents' needs. Because the shelters were donated from different resources such s the government, public organizations, and charities, the shelters' public facilities, their prefabs' structural patterns, and their building materials were varied. In addition to variation in structure maintenance, the diverse building materials had different impacts on the roofs' heat insulation, sectional walls' soundproof and waterproof, fire prevention space between two neighboring prefabs, and the floor vibration. In this study, we analyzed and compared all the data gathered from on-site interviews, shelters' installation diagrams, prefabs' floor plans and sectional drawings, and structural diagrams of the partial construction. It is expected to provide the government with this study as a reference to the management of the mid-term and long-term shelters and as a foundation to the related academic studies. We also made comments and suggestions for the improvement of mass and fast constructions offered by opening architecture and construction systems.