This is a compilation of the lectures and keynote lectures presented at the Symposium on New Techniques for Design and Construction in Soft Clays held in Guarujá, Brazil between 22 and 23 May 2010. The book covers a wide range of updated techniques on several topics, such as site investigation, vertical drains, surcharge, plied embankment, granular piles, deep mixing, monitoring and performance. An essential reference for designers and practitioners involved in soft soil construction, this book provides a comprehensive view of current experiences and opinions of researchers and professionals from different parts of the world involving site investigation, design and construction on soft clays.