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Miyatoko

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Miyatoko completed
Miyatoko completed

Particulars

Owner: Miyagi Prefecture

Designer: ?

Contractor: Shimizu Construction Co Ltd, Mitsui Construction Co Ltd and Chizaki Kogyo Co Ltd J.V.

Statistics

Type: Gravity

Purpose(s): Flood Control / Water Supply

Reservoir capacity: 5 m3x106

Height: 48 metres

Length: 256 metres

Volume of RCC: 172 m3x103

Total volume: 280 m3x103

Construction Dates

Start of Project: 06/89 (June 1989)

Start of RCC: 06/90 (June 1990)

End of RCC: 12/93 (December 1993)

End of Project: 01/97 (January 1997)

Country: Japan

River: Miyatoko

DMS Co-ordinates: 38˚23'10.06"N, 140˚49'22.08"E

DD Co-ordinates: 38.386127, 140.822800

Facings

Upstream

SlopeType
0.60Traditional concrete against formwork

Downstream

SlopeType
0.80Traditional concrete against formwork

Spillway

SlopeType
0.80Traditional concrete against formwork

Placement

Layers (mm)Lifts (mm)
180500

Cementitious material

Cement (kg/m3)
96
Pozzolan (kg/m3)Pozzolan Type
24Low-lime flyash (ASTM Class F)