What downward slope characteristic is required for piping in a CHT system?

In a Collection, Holding, and Transfer (CHT) system, a slight downward slope is essential for the piping to ensure proper gravity flow of liquids. This slope facilitates the movement of wastewater or other liquids through the pipes without causing any stagnant areas where solids can settle or accumulate. A slight slope helps maintain a continuous flow, which is critical for preventing blockages and ensuring efficient operation of the system.

Should the slope be too steep, there might be an increased risk of surging, which could lead to turbulence and potential issues with the integrity of the system. Conversely, having no slope at all could cause significant drainage problems, making it difficult for the system to function as intended. Hence, the requirement for a slight downward slope strikes the right balance that promotes efficient liquid transfer while minimizing risks associated with both steep and flat piping configurations.