Then they are welded together into one long pipe that follows the contour of the land. Pipe joints are then coated and inspected. A trench for the pipeline is usually created at this point. Care is taken to keep the topsoil and subsoil in separate piles so they don't mix. The trench bottom is prepared, as needed, to prevent rock damage to the pipe.
Workers then lower the pipe into the ground.
The trench is backfilled and the topsoil is carefully replaced. Land is contoured and seeded according to landowner agreements and regulatory agency requirements. Safety and environmental inspections are conducted throughout the entire construction process. Legal Notice contains important terms of use.