HORIZONTAL DIRECTIONAL DRILLING (HDD)

Installation of pipe to carry electrical, telecom or irrigation lines.

Horizontal directional drilling is a technique that uses an above ground drill to bore under a road or other obstacles using a "locator" to track the location of the front of the drill bit. After the drill reaches its desired destination, the utility casing or pipe is back reamed (pulled back) to the bore's point of origin.

Typical bores can use up to 600mm diameter pipe which can be as long as 300m. Longer bores can be created with special equipment.

Advantages

• All Soil conditions

• No pit required

• Can install multiple pipes at once

• Fast setup

• Minimised impact of construction on surrounding areas

• Guided bit offers real-time control