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Origawa

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Origawa completed
Origawa completed

Particulars

Owner: Ministry of Land, Infrastructure & Transport

Designer: Ministry of Construction

Contractor: Satoh Kogyo Co Ltd., Maeda Construction Kogyo Co Ltd. and Dainihon Doboku Co Ltd. J.V.

Statistics

Type: Gravity

Purpose(s): Flood Control / Navigation

Reservoir capacity: 15 m3x106

Height: 114 metres

Length: 331 metres

Volume of RCC: 673 m3x103

Total volume: 742 m3x103

Construction Dates

Start of Project: 02/93 (February 1993)

Start of RCC: 11/96 (November 1996)

End of RCC: 07/00 (July 2000)

End of Project: 03/04 (March 2004)

Country: Japan

River: Ori

DMS Co-ordinates: 35˚19'42.57"N, 137˚18'10.21"E

DD Co-ordinates: 35.328491, 137.302841

Facings

Upstream

SlopeType
VerticalTraditional concrete against formwork
0.60Traditional concrete against formwork

Downstream

SlopeType
0.77Traditional concrete against formwork

Spillway

SlopeType
0.77Traditional concrete against formwork

Placement

Layers (mm)Lifts (mm)
250750

Cementitious material

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