Wick Boring

Harr Technologies has developed technology and methodology for new installation of subsurface drainage. The method does not need the road surface or compaction to be cut and removed. The Wick facilitates removal of sub water under the highway to prevent road separation, and allows sub surface water to be wicked out toward existing ditch drainages. Wick drainage pipe is placed using a Horizontal Directional Drill (HDD) method using only water, since bentonite would seal the wick. By directional drilling an engineered planned path for optimal sub surface drainage. The wick is placed into a HDPE casing and attached to the back reamer of the HDD. The casing and wick is pulled under the road using HDD method. Once casing emerges from underground the wick is tied securely opposite of the HDD by the Nylon rope that is woven into the wick. The casing is then removed by HDD. The casing joints are removed as they become visible. All joints are removed leaving the wick underground. Extensions of ADS pipe are added if necessary to flow to existing drainage structures.

Click here to view a wick illustration.

Click here to view a railroad wick drain detail.