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Once the above criteria are established, engineers can sketch the filter design based on the gradation curve of the core materials. The filter should fall within specified limits to ensure its effectiveness, and it can often be designed with multiple layers that alternate in size to enhance the overall performance of the water and sediment filtration system.
Conclusion
This overview of simplified filter criteria in soil mechanics emphasizes the importance of using established engineering principles to design effective filters for dams. By understanding the gradation curves, applying the three key criteria, and using a systematic approach to filter design, engineers can protect dam cores from erosion while ensuring long-term stability.