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Pirika

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Pirika completed
Pirika completed

Particulars

Owner: Hokkaido Development Bureau

Designer: Hokkaido Development Bureau

Contractor: Toda Construction Co Ltd and Shimizu Construction Co Ltd.

Statistics

Type: Gravity

Purpose(s): Flood Control / Hydropower / Irrigation

Reservoir capacity: 18 m3x106

Height: 40 metres

Length: 755 metres

Volume of RCC: 163 m3x103

Total volume: 360 m3x103

Construction Dates

Start of Project: 10/82 (October 1982)

Start of RCC: /88 ( 1988)

End of RCC: /89 ( 1989)

End of Project: 10/91 (October 1991)

Country: Japan

River: Shirobeshit-oshibetsu

DMS Co-ordinates: 42˚28'17.65"N, 140˚11'48.45"E

DD Co-ordinates: 42.471569, 140.196793

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

Cementitious material

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