 This paper examines the soil properties and interactions between piles and soil for the purpose of verifying the design assumptions made during the initial stages of the pile foundation construction process. The calibrated numerical model was used to compare the results from the INSA to pile load test with the predicted outcomes. The findings suggest that variations in soil characteristics can lead to different results when compared to the actual test data, thus highlighting the importance of accurate modeling and testing prior to construction. This article was authored by Marion Drusa and Josef Fulsak.