Ryumon
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Ryumon completed
Particulars
Owner: unknown
Designer: Ministry of Construction
Contractor: Nishimatsu Construction Co Ltd., Aoki Construction Co Ltd and Zenidaka-gumi Co Ltd (J.V)
Statistics
Type: Gravity
Purpose(s): Flood Control / Irrigation / Water Supply
Reservoir capacity: 42 m3x106
Height: 100 metres
Length: 378 metres
Volume of RCC: 521 m3x103
Total volume: 836 m3x103
Construction Dates
Start of Project: 09/87 (September 1987)
Start of RCC: 03/90 (March 1990)
End of RCC: 11/92 (November 1992)
End of Project: 03/97 (March 1997)
Country: Japan
River: Sakoma
DMS Co-ordinates: 33˚2'12.17"N, 130˚50'59.96"E
DD Co-ordinates: 33.036713, 130.849991
Facings
Upstream
| Slope | Type |
|---|---|
| Vertical | Traditional concrete against formwork |
| 0.30 | 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) |
|---|---|
| 150 - | 750 - |
| 200 | 1000 |
Cementitious material
| Cement (kg/m3) |
|---|
| 91 |
| Pozzolan (kg/m3) | Pozzolan Type |
|---|---|
| 39 | Low-lime flyash (ASTM Class F) |
