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Legadadi (Ethiopia)

Hollow Gravity Dam

Place:

Addis Ababa - Ethiopia

Customer:

Salini Costruttori S.p.A.

Year:

1964 – 1970

Project Description:

Addis Ababa urban water supply scheme with a storage capacity of 40 Mm

Main Features:
  • Main Dam with Concrete Buttress (H = 46 m, L_crest = 450 m, V_concrete = 0.11 Mm³)
  • Secondary Dam with Rockfill with bituminous facing (H = 20 m, L_crest = 600 m, V_embankment = 0.21 Mm³)
  • Water Treatment Plant ( V_design = 50'000 m³/day)
  • Steel Pipeline ( Φ 900 mm, L = 24 km)
  • Reinforced Concrete Storage Tank (V = 20'000 m³)
  • Spillway (Q_max des = 1'250 m³/s)
  • Intake and Outlet Works
  • Ancillary Works
Engineering Service:
  • Water supply scheme Feasibility study
  • Supervision and interpretation of geological and geotechnical site investigations
  • Preliminary Design
  • Contract Design
  • Detailed Final Design and Construction Drawings
  • Supervision of Construction on behalf of Contractor