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Balambano

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Balambano completed
Balambano completed

Particulars

Owner: P.T. Inco

Designer: Pacific Rim Power (J.V. of SNC-Lavalin Inc. and Klohn-Crippen Consultants Ltd.)

Contractor: Theiss / Astaldi S.p.A. Joint Operation

Statistics

Type: Gravity

Purpose(s): Hydropower

Reservoir capacity: 31 m3x106

Height: 95 metres

Length: 351 metres

Volume of RCC: 528 m3x103

Total volume: 534 m3x103

Construction Dates

Start of Project: 09/96 (September 1996)

Start of RCC: 04/98 (April 1998)

End of RCC: 06/99 (June 1999)

End of Project: 09/99 (September 1999)

Country: Indonesia

River: Larona

DMS Co-ordinates: 02˚38'38.88"S, 121˚13'13.64"E

DD Co-ordinates: -2.644133, 121.220459

Facings

Upstream

SlopeType
VerticalTraditional concrete against formwork with external geomembrane

Downstream

SlopeType
0.80Traditional concrete against formwork  [stepped face]

Spillway

SlopeType
0.80Reinforced conventional concrete cast after RCC placement

Placement

Layers (mm)Lifts (mm)
420420

Cementitious material

Cement (kg/m3)
81
Pozzolan (kg/m3)Pozzolan Type
54Low-lime flyash (ASTM Class F)