屋顶水箱为民用房屋必备的生活设施。所以，在多层民用房屋的屋顶上，大都设有水箱。但在过去的屋顶水箱设计中，往往把屋顶水箱仅当作房屋设计中的附属小构件，忽视了水箱展害问题。从目前使用的“水箱套用图集”可以发现，其屋顶水箱存在的问题主要有以下二个方面：一、在屋 Roof water tanks are necessary living facilities for residential houses. Therefore, on the roofs of multi-storey residential houses, there are mostly water tanks. However, in the design of roof tanks in the past, roof tanks were often used as ancillary components in the design of houses, and the problem of water tank damage was neglected. From the current use of the “Water Tank Application Atlas”, it can be found that the problems with the roof tanks are mainly in the following two aspects: First, in the housing