Geothermie 70-00231-2530-501

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* Dates for performing the main service on the construction site: Service start: 19.01.2027; Service end: 17.05.2027 * Description of the procurement: 1 item pre-construction work / surveying / documentation 1 item site set-up and clearance for drilling works and connection works DRILLING AND EARTHWORKS AND CONSTRUCTION OF THE GROUND HEAT BOREFIELD 13 pcs ground heat borehole drilling 115 m, auxiliary casing diameter: at least 178 mm, borehole diameter: at least 152 mm 1 item / 60 t disposal of drilling water / drilling material 13 pcs ground heat double U-tube pipe heat exchanger probes 115 m approx. 45 t / 10 m³ filling and sealing the borehole annulus with thermally enhanced backfill slurry / securing loss horizon 1 pc EWS distribution manhole for 15 EWS, access/trafficable capacity approx. 40 t approx. 50 m³ construction of pipe trenches for horizontal ground heat pipework, excavation depth min. approx. 0.8 m and max. 1.50 m approx. 400 t disposal of surplus or non-compactable excavated material approx. 30 t supply and installation of compaction-capable backfill material approx. 500 m connection works probe head to EWS distribution manhole (including connection of test…

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