Viinikankadun maanalaisen ajoyhteyden ja P-Hämpin laajennuksen pohjatutkimukset

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The procurement concerns a unit-price-based service contract for carrying out subsoil investigations for the underground access road on Viinikankatu and the extension of P-Hämp, to the extent specified in the tender documents. The subsoil investigations shall be completed with their final reports by 31.12.2026 at the latest, or as soon as possible thereafter, if access is not available to all investigation points during 2026. In accordance with the investigation programmes attached to the request for tender, the contract includes rock core drilling (core sampling), rotary drilling (drilling with a core barrel), investigating the in-situ stress state of the rock, carrying out sampling, conducting laboratory tests of the samples, and reporting the investigation results. The supplier is responsible for safety planning of the investigations, including, among other things, the planning and execution of temporary traffic arrangements. In addition, the supplier is responsible for obtaining the required permits from the authorities. Some of the investigation points are located in the railway area. Working in the railway area requires a permit from the Finnish Transport Infrastructure…

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