Vertical drains can be employed in reduced permeability soils (clays, silts) and may noticeably improve the rate of consolidation. Prefabricated vertical drains consist of a flexible plastic Main (flat or cylindrical in condition) wrapped in the spun-bond filter fabric and will be mounted to depths of more than 50 m. https://self-love12110.ourcodeblog.com/33336147/the-single-best-strategy-to-use-for-professional-bd-engineering-service-providers