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The subject of procurement includes the supply of elements of inspection manholes (inspection shafts) intended for drainage, sewerage systems and other underground utility infrastructure, in accordance with the technical specification and the bill of quantities. The subject of procurement includes inspection manholes of different heights and dimensions, the associated elements required for their installation and functional completion, including bases, rings, cones and end elements, sealing elements and other components of the system, as well as composite covers of different dimensions and covers of different load-bearing classes, depending on the installation location and the intended traffic loading. Inspection manholes are intended to ensure access to underground pipelines and installations for inspection, control, cleaning, maintenance, inspection and rehabilitation. The subject of procurement includes standardized and mutually compatible elements that together form a functional whole and enable proper and safe installation and use of inspection manholes. All elements must be mutually compatible and aligned with the designed diameters, installation heights and depths,…

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