What is the slope ratio required for landfill cells?

The slope ratio of 2:1 is typically required for landfill cells to ensure stability and proper drainage. This means that for every 2 horizontal units, there can be a maximum of 1 vertical unit of rise. A 2:1 slope provides a balance between maximizing space within the landfill and maintaining the structural integrity of the landfill cells.

With this ratio, the risks of erosion and potential landslides are minimized, which is essential for the long-term management of landfill sites. Additionally, it facilitates water runoff, helping to protect the surrounding environment and groundwater from contamination due to rainfall or leachate.

Slopes that are too steep, such as those with ratios of 1:1 or 3:1, can pose hazardous conditions, increasing the likelihood of erosion and structural failure. A slope ratio of 4:1, while less steep, may not provide sufficient support for the operational requirements of the landfill, potentially leading to inefficiencies in waste management. Thus, the 2:1 ratio strikes an effective compromise for operational needs and environmental safety.