Valley of Ouargla Sewerage & Drainage Networks Phases I & II


Ministry of Water Resources - MRE

Role of BUTEC

National Office for Sanitation – (ONA)


Phase I: Main contractor Phase II: Main contractor in JV with VINCI Construction Grands Projects and SOGEA SATOM


Phase I: September 2005 Phase II: July 2006

Scope of Work

EPC for civil works, sewer networks, ground water drainage network and all related appurtenances.

Project Description

  • 33 sewage pumping stations including installation of hydraulic and electro- mechanical equipment
  • 120 km of sewers, DN 300 to DN 1,100 covering an area of 7 000 ha
  • 1,500 tons of steel sheet piling for:
    •  Lost formwork in construction of pump stations, most of which are over 11m deep
    •  Box sheeting for excavation and installation of sewers, due to high

water table (60 cm below ground surface) and loose nature of subsoil (sand)

• Client senior staff accommodation (apartment buildings – built-up area of 2,500 m2)

• Contractor’s camp total area: 20,000 m2 (labor housing, canteen, infirmary, administration building, offices, workshops, recreation areas, landscaping and green area)