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Hiyoshi

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Hiyoshi completed
Hiyoshi completed

Particulars

Owner: Water Resources Development Public Corporation

Designer: Water Resources Development Public Corporation

Contractor: Tobishima Construction Ltd., Kohnoike Co Ltd. and Morimoto Co Ltd. J.V.

Statistics

Type: Gravity

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

Reservoir capacity: 66 m3x106

Height: 70 metres

Length: 438 metres

Volume of RCC: 440 m3x103

Total volume: 670 m3x103

Construction Dates

Start of Project: /83 ( 1983)

Start of RCC: 10/94 (October 1994)

End of RCC: 07/96 (July 1996)

End of Project: 03/98 (March 1998)

Country: Japan

River: Katsura

DMS Co-ordinates: 35˚8'50.78"N, 135˚31'0.84"E

DD Co-ordinates: 35.147438, 135.516907

Facings

Upstream

SlopeType
VerticalTraditional concrete against formwork
0.80Traditional concrete against formwork

Downstream

SlopeType
0.80Traditional concrete against formwork

Spillway

SlopeType
0.80Traditional concrete against formwork

Placement

Layers (mm)Lifts (mm)
250750
 1000

Cementitious material

Cement (kg/m3)
84
77
Pozzolan (kg/m3)Pozzolan Type
36Low-lime flyash (ASTM Class F)
33