A Comprehensive Analysis of Foundation Design Approaches
Keywords:
ASD (allowable stress design), Foundation design approaches, LRFD (load and resistance factor design), LS, Serviceability limit states (SLS), Ultimate limit states (ULS)Abstract
Foundation design is an iterative process irrespective of the type of foundation. A design approach for critical structure foundations needs a precise estimation of bearing capacity and settlement criteria. In the modern foundation design process, consideration of load combination is important. The present paper discusses the steps involved in foundation design, various design approaches, respective load combinations, and factors of safety. It also focuses on recent development in the LRFD method. The key points are listed for respective design approaches along with their pros and cons. It also delineates exact guidelines for the selection of a foundation design approach in combination with field conditions.
