I'm analyzing a surface water tank using plate element. Im getting more base pressure due to earthquake load and water pressure. Can anyone confirm why it is so. the model is attached below. 7103.Structure1-22.09.2023.STD

START JOB INFORMATION ENGINEER DATE 08-Aug-19 END JOB INFORMATION INPUT WIDTH 79 INPUT WIDTH 79 OUTPUT WIDTH 118 UNIT METER KN JOINT COORDINATES 1 10 -1.2 0; 2 10.5 -1.2 0; 3 11 -1.2 0; 4 11.5 -1.2 0; 5 12 -1.2 0; 6 12.5 -1.2 0; 7 13 -1.2 0; 8 13.5 -1…