Origawa
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Origawa completed
Particulars
Owner: unknown
Designer: Ministry of Construction
Contractor: Satoh Kogyo Co Ltd., Maeda Construction Kogyo Co Ltd. and Dainihon Doboku Co Ltd. J.V.
Statistics
Type: Gravity
Purpose(s): Flood Control / Navigation
Reservoir capacity: 15 m3x106
Height: 114 metres
Length: 331 metres
Volume of RCC: 673 m3x103
Total volume: 742 m3x103
Construction Dates
Start of Project: 02/93 (February 1993)
Start of RCC: 11/96 (November 1996)
End of RCC: 07/00 (July 2000)
End of Project: 03/04 (March 2004)
Country: Japan
River: Ori
DMS Co-ordinates: 35˚19'42.57"N, 137˚18'10.21"E
DD Co-ordinates: 35.328491, 137.302841
Facings
Upstream
| Slope | Type |
|---|---|
| Vertical | Traditional concrete against formwork |
| 0.60 | 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) |
