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HÜDIG -Lowering the groundwater level with Hüdig HC 468/15 Whisper SL & Grindex Major N

Recently, 3 Hüdig HC468/15 Whisper SL groundwater lowering units and 2 Grindex Major N submersible wastewater pumps were used for the construction of a new hotel with an underground car park.

The construction site was located in Paderborn in the immediate vicinity of a residential area. This meant that the contractor had special requirements in terms of noise protection.

Hüdig HC468/15 Whisper SL units achieve a calculated sound pressure level at 7m or 10m of just 46 dB(A) / 44 dB(A) due to their particularly effective sound insulation.

The excavation pit had a size of approx. 60 x 45m and two lift shafts were planned. Due to the high groundwater volume, a total of 75 filter lances of 5 m length were used. Filter lances of 5 m length each were used. The lift shafts were lowered in open dewatering, using one Grindex submersible wastewater pump of the type Major N for each shaft.

Grindex submersible wastewater pumps can demonstrate their unsurpassed dry-running safety here. This is guaranteed by the integrated air cooling valve and the S.M.A.R.T. motor protection system.

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