Floating Foundation Prototypes for Enhance Stability in Sand Deposits
The Raft foundation is a type of a shallow foundation in the construction industry. The built-in rafts are usually flat. The idea of this study is to examine an innovative and effective design of raft foundation. This study also aims to determine the settlement pattern and magnitude of the new designs. The prototype models were prepared in four different types and one basic type as a control. The four different types were derived from shape that encountered in daily life, i.e. Honeycomb and Lego building blocks. The Hexagonal 4, Hexagonal 16, Circular 4 and Circular 16 designed have the same surface area but different number of protrusion. The prototypes were a 3D-object and were produced by using 3D-printing machine. Each model, include the control were then subjected to load tests in a chamber filled with sand deposited in loose and dense forms. An LVDT was installed to monitor the settlement over time with automatic data logging. The settlement data were next analyzed. In summary, the innovative raft foundation prototypes were found to be effective in reducing overall settlement. Further work is necessary to determine field in implementation of the prototypes.