按“高规”第6.4.7条,对高层建筑的消防水箱具体规定了容量不小于18m~3、12m~3、6m~3,并且规定“一类建筑的消防水箱如不能满足最不利点消火栓或自动喷水火火设备等的水压时,应设气压给水设备等增压设施”。在设计中,为满足“高规”的这一要求,必须在高层建筑上面一定高度上戴个帽子,但一般又都不能满足消防水压的要求, According to “high regulation” Article 6.4.7, on the high-rise building fire water tank specific provisions of the capacity of not less than 18m ~ 3,12 m ~ 3,6 m ~ 3, and provides that “a class of construction fire water tank if not meet the most disadvantaged point Hydrant or automatic fire water fire equipment, such as water pressure should be set pressure water supply equipment and other pressurized facilities. ” In the design, in order to meet this requirement of “high regulation”, we must wear a hat on a certain height above the tall building, but generally can not meet the requirements of fire water pressure,