Wick Drain (also referred to as strip drain or prefabricated vertical drain) is used in both vertical and horizontal applications. In the vertical application (vertical wick drains), the wick drain is installed with specialized equipment which drives the wick drain into the ground. Vertical wick drains, in conjunction with a preload, provide a shorter drainage path for water saturated areas in order to reduce the time to consolidation. This can save the project time and money compared to a preload alone.
Horizontal wick drain (strip drain) offers three advantages over a sand blanket for providing lateral drainage. Horizontal wick drains are less expensive, may be installed more quickly and easily with less manpower and equipment and with less clogging.