Zakládání staveb, a. s. - Vraňany - a cofferdam for a small hydroelectric station class=" view- no-layout no-task ltr">

Vraňany - a cofferdam for a small hydroelectric station

Vraňany - a cofferdam for a small hydroelectric station
In place of a shut down navigation lock and a ?oat culvert of the Vraňany waterworks the Zakládání staveb Co. carried out a foundation pit for building-in a small hydroelectric station. From the river side the foundation pit was secured by a 72 m long pile wall anchored at two to four levels by temporary strand anchors. The construction on the upper and lower waters was carried out under the protection of double coffer-dams made of sheet piles and filled with gravel.
The commission also included the following works: excavation of the foundation pit; securing of the riverside slopes by nailing, using the “kari” grids and sprayed concretes; carrying out the concrete bed; dredging of the river bed under the power station; backfills of the float culverts and reinforced concrete structures of the power plant; ground shaping.


Drilled piles dia. 450 mm, 12 m long: 700 m, 3strand anchors. 1166 m,
Excavation works: 10 000 m3,
Backfills: 12 000 m3,
Sheet pile cofferdams area: 1600 m2, Concrete beds: 600 m2,
Sprayed concretes: 800 m2,
Dredging of the riverbed: 29 000 m3.


Subterra Co., Bezová 1658/1, Praha 4-Braník


The City of Prague, Mariánské náměstí 2, Praha 1



37 mil. Kč 2004–2005

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  • Type of construction : Hydrotechnical projects
  • Country : Czech Republic
  • Financial volume : 10–50 mil. Kč
  • Completion date : 2001-2005
  • Supporting technologies : Piles,Driving

Basic data
Administrative address

Zakládání staveb, a. s.,
Dobronická č.p. 1371
148 26 Praha 4


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Data box - ID: 44utdij

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Zakládání staveb, a. s.
K Jezu 1, P. S. 21
143 01 Praha 4 - Modřany

ID Number: 49241567
Tax ID Number: CZ49241567

Company registered in the Commercial Register at the Municipal Court in Prague, Section B, Insert 2139.

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