Pirika
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Pirika completed
Particulars
Owner: unknown
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
| Slope | Type |
|---|---|
| Vertical | Traditional concrete against formwork |
| 0.80 | Traditional concrete against formwork |
Downstream
| Slope | Type |
|---|---|
| 0.80 | Traditional concrete against formwork |
Spillway
| Slope | Type |
|---|---|
| 0.80 | Traditional concrete against formwork |
Placement
| Layers (mm) | Lifts (mm) |
|---|---|
| 250 | 750 |
Cementitious material
| Cement (kg/m3) |
|---|
| 84 |
| Pozzolan (kg/m3) | Pozzolan Type |
|---|---|
| 36 | Low-lime flyash (ASTM Class F) |
