1.1 Overview of waterproof project Building waterproof project is a systematic project, which organizes various subsystems of building waterproof (such as structural layer, leveling layer, waterproof layer, protective layer, design, materials, construction, quality inspection, etc.) from the general aspect, and combines them into an organic whole with specific functions, so as to improve the anti-seepage and leakage resistance of the entire waterproof system. Basement main body of the project