Germany – Underground work other than tunnels, shafts and subways – San. Abwassersystem, 3. BA (11299001 / WIK, Heide, San. des Abwassersystems)

1. Earthworks - Excavation of trenches and individual foundation pits up to 5 m depth: approx. 6,300 m³ - Supply and install soil: approx. 3,000 m³ - Trench shoring and standard shoring up to 5 m depth: approx. 5,400 m²

2. Demolition work:

- Dismantling of drainage channels DN 200 - 700: approx. 1,400 m

- Dismantling of manhole structures up to DN 1500 up to 5 m depth: approx. 40 units

- Decommissioning of drainage channel by sealing: approx. 68 sections with approx. 33 m³ of grout

3. Pipes and manhole structures:

- PP pipe DN 100-400: approx. 1,800 m

- PP pipe DN 500-700: approx. 100 m

- PE-HD pipe DN 100-250: approx. 160 m

- Concrete manhole structures: approx. 60 units

4. Surfaces:

- Remove and reinstate concrete carriageways: approx. 1,600 m²

- Remove and reinstate cobblestones: approx. 150 m²

- Remove and reinstate asphalt surfaces: approx. 350 m²

- Remove and reinstate grass and planting areas: approx. 2,000 m²

5. Trenchless canal rehabilitation:

- Cured-in-place pipe (CIPP) liner DN 200-300: approx. 600 m

- House connection liner DN 200-600: approx. 30 m

- Partial liners and stainless-steel collars DN 150-700: approx. 50 units

- CIPP manhole liner DN 1000-1200: approx. 180 m