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Beni Haroun Dam

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Owner: Agence Nationale des Barrages, Algeria
Designer: Tractebel
Contractor: Dragados y Construcciones
Consultant to Contractor: Malcolm Dunstan & Associates
Location: 40 km NNW of Constantine, Eastern Algeria
River: El Kabir
Height: 118 m
Length: 714 m
Volume of RCC: 1 690 000 m³
Volume of dam: 1 900 000 m³
Reservoir capacity: 963M m³
Design flood: 13 230 m³/sec
Start of Project: 01.01.1993 (initial contract)
Start of RCC: 18.10.1998
Completion of RCC: 07.07.2000
Completion of Project: 31.12.2000
Forming of upstream face: 1m of immersion-vibrated concrete against vertical steel formwork
Forming of downstream face: 1m of immersion-vibrated concrete against stepped steel formwork at a slope of 0.80:1 (H:V)
Forming of spillway: Reinforced concrete slab cast on top of the stepped downstream face
Mixture proportions:
ASTM Type-II cement 82 kg/m³
ASTM Class F flyash 143 kg/m³
Water 101 kg/m³
Coarse aggregate 1335 kg/m³
Fine aggregate 750 kg/m³
Workability:
Loaded VeBe time 15 - 20 sec±

January 1999 - Split-level construction being used in the integral coffer dam (click on image to enlarge)

May 1999 - Placement of RCC downstream of the integral coffer dam (click on image to enlarge)

September 1999 - 'Swinger' loading 35-tonne dump trucks with RCC (click on image to enlarge)

September 1999 - Large and small vibratory rollers operating alongside formwork for middle gallery (click on image to enlarge)

September 1999 - Twin concrete plants each containing 2 x 4-m3 twin-shaft batch mixers (click on image to enlarge)

September 1999 - Overall view of concrete production area from cable-stayed bridge (click on image to enlarge)

September 1999 - Dam under construction from upstream (click on image to enlarge)

February 2000 - Concrete plant and bridge from conveyor (click on image to enlarge)

May 2000 - Start of construction of the spillway on top of the stepped downstream face (click on image to enlarge)

Typical core extracted from the RCC in Beni Haroun dam (click on image to enlarge)

May 2000 - Placement of RCC in left non-spillway section (click on image to enlarge)

July 2000 - Placement of RCC in right non-spillway section (click on image to enlarge)

December 2000 - Beni Haroun dam at night nearing completion (click on image to enlarge)

May 2001 - Upstream face of completed Beni Haroun dam (click on image to enlarge)

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