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Tamagawa

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Tamagawa completed
Tamagawa completed

Particulars

Owner: Ministry of Construction

Designer: Ministry of Construction

Contractor: Kajima Co Ltd, Okumura Co Ltd, and Chizaki Kogyo Co Ltd, (J.V.)

Statistics

Type: Gravity

Purpose(s): Flood Control / Hydropower / Irrigation / Water Supply

Reservoir capacity: 254 m3x106

Height: 100 metres

Length: 441 metres

Volume of RCC: 772 m3x103

Total volume: 1150 m3x103

Construction Dates

Start of Project: 08/80 (August 1980)

Start of RCC: 09/83 (September 1983)

End of RCC: 07/86 (July 1986)

End of Project: 12/90 (December 1990)

Country: Japan

River: Tama

DMS Co-ordinates: 39˚49'52.59"N, 140˚38'26.85"E

DD Co-ordinates: 39.831276, 140.640793

Facings

Upstream

SlopeType
VerticalTraditional concrete against formwork
0.60Traditional concrete against formwork

Downstream

SlopeType
0.81Traditional concrete against formwork

Spillway

SlopeType
0.81Traditional concrete against formwork

Placement

Layers (mm)Lifts (mm)
150  -750
2001000

Cementitious material

Cement (kg/m3)
91
Pozzolan (kg/m3)Pozzolan Type
39Low-lime flyash (ASTM Class F)