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Nam Ngiep I

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Nam Ngiep I under construction
Nam Ngiep I under construction

Particulars

Owner: Nam Ngiep 1 Power Company

Designer: Kansai

Contractor: Obayashi (with sub-Contractor Song Da Corporation)

Statistics

Type: Gravity

Purpose(s): Hydropower

Reservoir capacity: 1192 m3x106

Height: 166 metres

Length: 540 metres

Volume of RCC: 2400 m3x103

Total volume: unknown

Construction Dates

Start of Project: 09/14 (September 2014)

Start of RCC: 04/16 (April 2016)

End of RCC: 08/18 (August 2018)

End of Project: 01/19 (January 2019)

Country: Laos

River: Nam Ngiep

DMS Co-ordinates: 18˚38'47"N, 103˚31'11"E

DD Co-ordinates: 18.646389, 103.519722

Facings

Upstream

SlopeType
VerticalRCC against formwork (GEVR/GE-RCC)

Downstream

SlopeType
 RCC against formwork (GEVR/GE-RCC)  [stepped face]

Spillway

SlopeType
 Reinforced conventional concrete cast after RCC placement

Placement

Layers (mm)Lifts (mm)
3003000  -
 3600

Cementitious material

Cement (kg/m3)
80
50
Pozzolan (kg/m3)Pozzolan Type
120Low-lime flyash (ASTM Class F)
150