Chiya
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Chiya completed
Particulars
Owner: unknown
Designer: Okayama-ken
Contractor: Ohbayashi Co Ltd, Kajima Co Ltd and Ohmoto-Gumi Co Ltd J.V.
Statistics
Type: Gravity
Purpose(s): Flood Control / Hydropower / Water Supply
Reservoir capacity: 28 m3x106
Height: 98 metres
Length: 259 metres
Volume of RCC: 396 m3x103
Total volume: 670 m3x103
Construction Dates
Start of Project: 03/89 (March 1989)
Start of RCC: 09/92 (September 1992)
End of RCC: 04/95 (April 1995)
End of Project: 03/98 (March 1998)
Country: Japan
River: Takahashi
DMS Co-ordinates: 35˚3'23.86"N, 133˚27'25.25"E
DD Co-ordinates: 35.056629, 133.457016
Facings
Upstream
| Slope | Type |
|---|---|
| Vertical | Traditional concrete against formwork |
Downstream
| Slope | Type |
|---|---|
| 0.77 | Traditional concrete against formwork |
Spillway
| Slope | Type |
|---|---|
| 0.77 | Traditional concrete against formwork |
Placement
| Layers (mm) | Lifts (mm) |
|---|---|
| 250 | 750 |
Cementitious material
| Cement (kg/m3) |
|---|
| 91 |
| Pozzolan (kg/m3) | Pozzolan Type |
|---|---|
| 39 | Low-lime flyash (ASTM Class F) |
