@article{Jonathan R. Dungca_Raynold Y. Pua_Raynold, Nelson Que_Anne Kristine M. Sangalang_Ayran Nicole Tan_2021, title={MAT FOUNDATION DESIGN REFERENCE FOR METRO MANILA, PHILIPPINES}, volume={15}, url={https://geomatejournal.com/geomate/article/view/836}, abstractNote={<p>To design mat foundations, there are certain values which are required for calculations and <br>analyses, one of which would be the vertical modulus of subgrade reaction. It can be obtained through <br>various deterministic tests such as the Plate Load Test. On the other hand, the study calculated this factor <br>through the use of Standard Penetration Test (SPT) results by using four different methods. Comparative <br>study and validation were also performed to confirm the most recommendable method to be used to compute<br>for the soil spring constant, given the limitations of the SPT results, by correlation of this parameter to the <br>California Bearing Ratio (CBR) test results. Through this, the study considered and used the equation <br>formulated by Bowles to calculate the vertical modulus of subgrade reaction. Then, a Geographic <br>Information Systems (GIS) software was utilized to generate maps of these values by the method of ordinary <br>kriging. These maps presented the locations with the predominantly high and low values of the soil spring <br>constant. They were also used to create a digitized reference of the values of the vertical modulus of subgrade <br>reaction for the design of mat foundations for preliminary design through the use of Visual Basic <br>Applications 2010.</p>}, number={47}, journal={GEOMATE Journal}, author={Jonathan R. Dungca and Raynold Y. Pua and Raynold, Nelson Que and Anne Kristine M. Sangalang and Ayran Nicole Tan}, year={2021}, month={Nov.}, pages={42–47} }