The book shall be of immense use for young Engineers who may wish to have interesting and rewarding careers as Cost Engineer, Quantity Surveyor, Technical Auditor in the Construction Industry. It is mostly directed at Engineering professionals, can also be useful to have insight of the construction industry for small and medium size Contractors and individual clients who intend to build up their own villas. I also feel that it would be of immense help to young Engineers who seek careers in the construction industry, particularly in China, India, Middle East where Cost Engineering has not developed like say countries such as United Kingdom & Australia where many university offer degree Courses in Quantity Surveying and related fields. There is another professional case to publish this book. The Author has to make explanation/substantiations for two issues given below. a) Once the Author made a presentation on the topic "Construction as an Option to international Investors ( published in Building Economics-AIQS Dec.2011) and made a statement that in such cases the Quantity Surveyors can work as advisors to them and earn in excess of US $ 100,000/= a week. Some Quantity Surveyors were sceptical or couldn't comprehend and it became joke to them. The chapter on Tender Adjudication and Post- Tender negotiations answers this. b) The author made another point that if someone could do Technical Auditing of a big project that would be enough for his entire life and quoted a Lawyer in Sri Lanka in the 1960's who did only one case in his whole career. He earned so much that he never sited the Courts for rest of his life. Again, some people were sceptical, couldn't comprehend. The case studies given under Construction Frauds shall give an indication regarding the possibilities of the amount of savings in Technical Auditing.