Pirris
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Pirris completed
Particulars
Owner: ICE (Instituto Costarricence de Electricidad)
Designer: ICE
Contractor: ICE and Astaldi
Statistics
Type: Gravity
Purpose(s): Hydropower
Reservoir capacity: 36 m3x106
Height: 113 metres
Length: 258 metres
Volume of RCC: 695 m3x103
Total volume: 755 m3x103
Construction Dates
Start of Project: 12/06 (December 2006)
Start of RCC: 03/09 (March 2009)
End of RCC: 06/10 (June 2010)
End of Project: 07/11 (July 2011)
Country: Costa Rica
River: Pirris
DMS Co-ordinates: 9˚38'38.45"N, 84˚06'08.44"W
DD Co-ordinates: 9.644014, -84.102341
Facings
Upstream
| Slope | Type |
|---|---|
| 0.33 | RCC against formwork (GEVR/GE-RCC) [stepped face] |
Downstream
| Slope | Type |
|---|---|
| 0.50 | RCC against formwork (GEVR/GE-RCC) [stepped face] |
Spillway
| Slope | Type |
|---|---|
| 0.50 | Reinforced conventional concrete cast after RCC placement |
Placement
| Layers (mm) | Lifts (mm) |
|---|---|
| 300 | 300 |
Cementitious material
| Cement (kg/m3) |
|---|
| 88 |
| Pozzolan (kg/m3) | Pozzolan Type |
|---|---|
| 132 | Natural pozzolan (ASTM Class N) |
