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: 265 metres
Volume of RCC: 695 m3x103
Total volume: 755 m3x103
Construction Dates
Start of Project: 12/06 (December 2006)
Start of RCC: 04/09 (April 2009)
End of RCC: 05/10 (May 2010)
End of Project: 07/11 (July 2011)
Country: Costa Rica
River: Pirris
DMS Co-ordinates: 09˚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) |
---|
100 |
80 |
Pozzolan (kg/m3) | Pozzolan Type |
---|---|
100 | Natural pozzolan (ASTM Class N) |
80 |