DYNAMIC TESTING OF PILE USING PILE DRIVING ANALYZER HAS BECOME MODERN SOLUTION TO ESTIMATE PILE BEARING CAPACITY. AT THE PRESENT TIME, TO CALCULATE SUCH A CAPACITY, THE MATCH OF TIME-ENERGY FIGURE DATA THAT HAS BEEN DERIVED FROM RECORDED INFORMATION AND THE SELECTION OF OIL RESISTANCE VARIABLES USING COMPLEMENTARY SOFTWARE, CAPWAP, ARE MATTERS OF EXPERIMENT. THEREFORE, CONSIDERING THE TEST AND ERROR IN THE ALGORITHM AND THE EXISTENCE OF GREAT VARIETY OF VARIABLES THAT AFFECT SOIL WHICH IS USED BY CAPWAP IN ITS PROCESS TO ACHIEVE THE BEST MATCH, IT IS POSSIBLE TO ACHIEVE A MATCH QUALITY THAT CORRESPONDS TO THE RESULTS ALREADY ACHIEVED ABOUT PILE BEARING CAPACITY. THIS ARTICLE INTENDS TO STUDY THE IMPACT OF ALTERATIONS IN SOIL PARAMETERS AND CONSIDER SUCH EFFECTS ON THE BEARING CAPACITY DISTRIBUTED BETWEEN PILE TIP AND PILE WALL AND TOTALLY ON BEARING CAPACITY IN ORDER TO ACHIEVE A MATCH QUALITY THAT IS SIMILAR TO A PARTICULAR RECORD. FROM AMONG THE TOTAL NUMBER OF 12 SAMPLES WHICH ARE CONSIDERED TO BE SUITABLE FOR ACHIEVING MATCH QUALITY, 6 VARIABLES ARE CASE DAMPING FOR THE TIP AND WALL OF THE PILE. SMITH DAMPING IS OF GREAT IMPORTANCE FOR WALL AND TIP OF THE PILE AS WELL AS MAXIMAL QUAKE DISPLACEMENT.