To increase holidays and improve working environment, construction methods not effected by bad weather are worthy of attention. In many of existing methods, it is usual for a workshop not to get wet that a temporary or a practical roof is constructed first, and lifted up or jacked up. In the method reported in this paper, external aluminum panel walls set to hide equipments on the roof are assembled on the ground and slided up as steel frames are constructed. These walls are also useful for workshop not to be disturbed by winds in addition to rain.
