How does the hydraulic stability of the Xbloc® compare to other units?
From the first 2D tests at Delft Hydraulics it was found that the hydraulic stability is at least comparable with the hydraulic stability of other single layer armor units. The Hudson equation [Kd = 16] or the Van der Meer’s equation [stability number = 2.8] can be used for preliminary design, based on a slope angle of 3:4. In further 2D model testing even better stability results were obtained, as a result of an improved unit placement method. This results in additional safety of the design.