Abstract: The low strain acoustic detection method is a relatively matured method in the pile integrity determination, but it has not been widely used in the pile length estimations. This paper presents a case history of an application of the acoustic method in the pile length estimations. The estimated length is compared with the pile length recorded in the pile installations, as well as the length from the pile coring.

Key words: Low Strain, Acoustic Detection Method, Pile Length Estimation, Cast-In-Place Pile