Geothermie 70-00231-2530-501

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* Dates for performing the main service on the construction site: Start of performance 19.01.2027; end of performance 17.05.2027 * Description of the procurement: 1 psch building preliminary services / surveying / documentation 1 psch site establishment and clearance for drilling work and connection work DRILLING AND EARTHWORK AND CONSTRUCTION OF GROUND HEAT BOREHOLE FIELD 13 units Ground heat borehole drilling 115 m, auxiliary casing diameter: at least 178 mm, borehole diameter: at least 152 mm 1 psch / 60 t disposal of drilling water / drilling material 13 units Ground heat double U-tube borehole probes 115 m Approximately 45 t / 10 m³ backfilling and sealing of the annular space of the borehole with thermally enhanced grouting suspension / securing loss of horizon 1 unit EWS distribution shaft for 15 EWS, load-bearing capacity for access approx. 40 t Approximately 50 m³ excavation of trench work for horizontal ground heat lines, excavation depth min. approx. 0.8 m and max. 1.50 m Approximately 400 t disposal of surplus excavated material or excavated material that is not suitable for compaction Approximately 30 t supply and installation of compactable backfill…

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