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Pirris

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Pirris completed
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

SlopeType
0.33RCC against formwork (GEVR/GE-RCC)  [stepped face]

Downstream

SlopeType
0.50RCC against formwork (GEVR/GE-RCC)  [stepped face]

Spillway

SlopeType
0.50Reinforced conventional concrete cast after RCC placement

Placement

Layers (mm)Lifts (mm)
300300

Cementitious material

Cement (kg/m3)
100
80
Pozzolan (kg/m3)Pozzolan Type
100Natural pozzolan (ASTM Class N)
80