There are many types of water outlets, the common ones are the word channel, the eight-character style and the gate-character style. The location, shape and flow rate of the outlet of the drainage pipe correspond to the drainage water quality, groundwater level, water flow and water level change range, children and self-purification ability, water flow direction, wave conditions, deformation, and weather. The health authorities and the guidance and management departments agree that the connection between the water outlet and the water bank should adopt anti-scouring, energy dissipation, and statistics. In areas affected by frost heave, the water outlet should be constructed with frost-resistant materials. The foundation must be set below the freezing line.
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