Numerical Evaluation on the Different Shapes of Gravelly Sand Columns to Increase the Loading Capacity of Soft ClaySif Allah Meghzili, Aziman Madun, Saiful Azhar Ahmad Tajudin, Mohd Fairus Yusof and Mohd Ashraf Mohamad IsmailMATEC Web Conf., 103 (2017) 07005DOI: https://doi.org/10.1051/matecconf/201710307005