Poland - Construction of hydraulic engineering facilities

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Details

Provided by Open Opps
Opportunity closing date
19 August 2020
Opportunity publication date
17 July 2020
Category
45240000: Co
Value of contract
to be confirmed
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Description

The subject of the contract is the construction of a fish ladder on the right bank of the Vistula River, bypassing the step and threshold at km 4+940 of the Vistula River. The scope of works includes in particular: a) construction of a technical double-slot fish ladder at the weir in km 4+940 and the step in km 5+100 of the Vistula river course. The basic parameters: length of the main gland 244 m, length of the side branch of the gland 13 m, number of chambers 47, bottom width 4.0 m, length of the chamber 3.3 m, number of crevices 2 pcs, width of the crevice 0.4 m; b) reconstruction of the step-blade in km 5+100 of the Vistula River course supporting the weir located in km 4+940. The reconstruction consists in making new shorts and supplementing the existing one with a stone surcharge. Basic parameters: length of blade 57 m, width in the bottom of the overflow of blade 56 m, width in the bottom of the closing gurus closing the accident blade 70 m, width in the bottom of the lowering in the overflow blade 6.5 m, width of the overflow gurus blade 3.0 m, width of the closing gurus blade 3.0 m.
The subject of the contract is the construction of a fish ladder on the right bank of the Vistula river passing by the step and threshold in km 4+940 of the course of the Vistula river. The scope of work includes in particular: a) construction of a technical double-slot ladder at the weir in km 4+940 and the step of the bull's eye in km 5+100 of the course of the Vistula river. The double-slot ladder is a reinforced concrete structure built in the cover of steel sheet piling walls. The channel of the river bed will be U-shaped in cross-section. On the sections where the gully crosses the passageways, it will have the form of a closed box. In these sections, the ceiling section has been designed with holes to light up the gland protected by a grating. Basic parameters of a two-slot gland: - length of the main gland 244 m,- length of the gland's side leg 13 m,- number of chambers 47 pcs,- width of the bottom 4.0 m,- length of the chamber 3.3 m,- number of slots 2 pcs,- slot width 0.4 m,- fish entry point equipment are elements related to fish migration monitoring, gate valves regulating the closure of the fish entry point, covering of the fish entry point; b) reconstruction of the step-blade in km 5+100 of the Vistula River course supporting the weir located in km 4+940. In order to direct fish to the entrance to the main fish entry point, the existing fish entry point should be reconstructed. The reconstruction consists of making new shorts and supplementing the existing one with a stone surcharge. Basic parameters of the designed water device (step-by-step ratio):- length of blade 57 m, - width in the bottom of the overflow blade 56 m, - width in the bottom of the closing port of the blade 70 m, - width in the bottom of the drop in the overflow blade 6.5 m, - width of the overflow blade 3.0 m, - width of the closing port of the blade 3.0 m, - width of the closing port of the blade 3.0 m, - the wholesale forming the overflow blade (Gurt - 1) and the closing port (Gurt - 4) will be led perpendicular to the axis of the river. The constructions of these guurts are based on two sheet piling walls made of steel sheet at a distance of 2.0 m, connected by a reinforced concrete eyelet. The use of steel bulkheads with an elastic strength index greater than 1 600 cm3/m and a length of 11 m is foreseen. The part of the sloping blade is to be made under the slanting so that the fish wandering upstream of the river will move towards the right bank. In order to stabilize such a shape of the bull, two shorts (Gurt-2 and Gurt-3) are also to be made from a single sheet piling wall made of steel sheet piling with an elastic strength index greater than 1,600 cm3/m, 6 m long with a reinforced concrete eyelet.2 Detailed scope of works and quality requirements concerning the materials used are contained in the ToR, including: technical (design) documentation, work size and a detailed description of the subject of the contract drawn up for the device for visual scanning and recording of fish3. 4. 5. the execution of the contract includes the execution of works specified in the tender documentation, accompanying works, temporary works and works resulting from the specificity of the project, the execution of assembly works and deliveries, as well as the fulfilment of the requirements for task execution specified by the Awarding Entity.

Opportunity closing date
19 August 2020
Value of contract
to be confirmed

About the buyer

Address
Państwowe Gospodarstwo Wodne Wody Polskie – Regionalny Zarząd Gospodarki Wodnej w Krakowie ul. Grzybowska 80/82 Warszawa 00-844 Poland
Contact
marzena.pomorska@wody.gov.pl

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