Comparisons of shallow foundation calculations between existing Vietnamese national standards based on bearing resistance of soil

Abstract

ABSTRACT

For Vietnamese national standards in construction, several standards for the shallow foundation design are currently in use. However, calculations specified in those standards are not similar to each other. Consequently, the usage is troublesome for users and the decision making affects the construction cost. Furthermore, according to the orientation of Vietnamese government, the unification of Vietnamese national standard system was directed to act. In this study, foundations calculations on the basis of current Vietnamese standards are compared based on bearing resistance of soil. The results show that there are significant differences between the standards. This study also presents proposals on revising the
existing standardization documents.

Keywords: Shallow foundation design; design phylosophy; partial safety factor; global safety factor; limited state; TCVN 9362:2012; TCVN 11823-10:2017; soil bearing capacity.