Dewatering & Excavation for Cofferdam from existing ground level @ +1.70m NGD to -5.70 m NGD. The excavation quantity was 2,500 m3 of hard rocks.
Fabrication & Installation of specially made 150 tons, 30 x 10 x 10 m steel Cofferdam @ -5.70 m NGD
Cast In-situ for underwater 350 m3 concrete ballast designed for cofferdam stabilizing
Peripheric cofferdam backfill & ballast of 950 m3 of gravel
Supply and underwater installation of 2 x 1400 mm & 800 mm diameter x 500 mm thickness Stainless steel flanges for connection between pipelines and pump room
20,000 m3 Underwater trench of hard corals and sand dredging in front of cofferdam for pipelines from level -4.00 m NGD till level -12.00 m NGD
Casting of 800 units of pipeline concrete weight blocks
2 HDPE Pipelines of 780 lm & 430 lm with 800 mm & 1400 mm diameter preparation and installation from -4.00 m NGD to -23.00 m NGD
Dredging bottom of intake chamber @ -20.00 m NGD
Installation of 40 tons 5.7m high x 3.3m wide GRP intake chamber and 30m2 concrete slab @ -20.00 m NGD
Supply and installation of 3 signalizations buoys complete systems @ -20.00 m & -25.00 m NGD