The second to third floors underground are commercial, and the fourth to 19th floors are residential. The low area of the water supply system is for municipal water supply, and the high area is for non negative pressure water supply equipment in the equipment room of the community. The underground drainage system is drained by sewage pump, and the above ground part is drained by gravity flow. A reclaimed water system is provided. The fire hydrant system is a temporary high-pressure system, which consists of a fire pool, a fire hydrant booster pump, and an elevated water tank. The spray system is a temporary high-pressure system, which consists of a fire pool, a spray booster pump and a high-level water tank.
The main drawings include: design and construction instructions, drawings and list of main materials, water supply and drainage plans from the second floor to the nineteenth floor, fire protection plans from the second floor to the nineteenth floor, various system diagrams, details of commercial toilets, kitchen, toilets, water supply of water meter wells, hot water, and details of reclaimed water axis.