Vertical drains may be used in lower permeability soils (clays, silts) and might drastically raise the price of consolidation. Prefabricated vertical drains consist of a versatile plastic Main (flat or cylindrical in condition) wrapped inside of a spun-bond filter fabric and can be installed to depths of a lot more https://landsurveyingcompaniesbd40517.newsbloger.com/33780732/what-does-top-civil-engineers-in-bd-mean