EVALUATION OF PILE DRIVING CALCULATION FROM SPT DATA WITH PDA TEST RESULTS ON A 5,000 KILOLITER WATER TANK IN SEI SIAK, PEKAN BARU

Abstrak

The foundation is a part of a substructure system that supports its own weight and all load forces from the superstructure, then transfers them to the soil and rock layers beneath. This research aims to determine the bearing capacity of the foundation using the Mayerhof method, to determine the efficiency of the pile group using the Feld formula, to compare the analytical results with the PDA test data, and to identify which method most closely approximates the PDA test field data. The results of the study show that the pile foundation design is safe after being evaluated with the PDA test, as the bearing capacity obtained from the PDA test is greater than the planned value. The bearing capacity of a single pile based on SPT (Mayerhof) data at a depth of 30 meters is 126.7 tons, and the PDA test result is 194 tons. Piling at a depth of 30 meters is feasible and does not need to extend beyond 30 meters. The required number of piles is 54, which is fewer than the number of piles already used (driven).