ERAY-PRT-N Pile Integrity Tester
★ Pile integrity test is based on wave propagation theory ; ★ Low strain pile integrity test stems from the fact that when a light impact is applied to a pile it produces a low strain ; ★ The impact generates a stress wave that travels down the pile. When the downward stress wave encounters a change in cross section or in concrete quality, it generates reflected wave that is later observed at the pile top.