In order to prevent these defects, the engineers need to know the height of capillary ascension in order to design the intercepting layer and to carry out the rational design of the embankment.

• 为了防止这些病害,道路设计人员常常必须取得毛管水上升高度的数据,以便合理地设计路肩高度和毛管水隔断层。