Static load tests are expensive and time consuming, and therefore are often conducted only on a very small number of piles. With PDA many more piles can be tested at much lower cost and speed. This increases quality assurance and helps to optimize pile driving criteria. PDA results also correlate very well with piles capacities obtained from conventional static load tests and confirm the structural integrity of the pile element. PDA is the answer for projects where static testing is prohibitively expensive or physically impossible.