The company Kunegel based in Colmar has invested in the construction of a new workshop for the maintenance of its fleet of buses. Kunegel specialises in national tourist transport. It is a family business run by Mr Kunegel.
It is literally a stone's throw from their head office in Rue des Jardins, in the building next door, that they have decided to set up. This windfall means that the company can keep its fleet of buses next to the existing workshop, which is itself housed under the company's head office.
This involved the renovation of an existing warehouse into a workshop for bus maintenance and servicing.
Kunegel placed its trust in us by ordering a bus workshop pit 1.60 m deep and 34 m long. Zwickert, a company specialising in the renovation and construction of industrial buildings, excavated the site to install the pit. Colmar is unique in that its water table is shallow. At a depth of less than 1.6 m, springs run beneath the town.
So it came as no surprise that Zwickert came across groundwater when digging up the floor of the existing warehouse. The photos speak for themselves.
We pumped the water in using a pump sized to meet our needs (700 litres per hour). It was only after half a day of pumping that we were finally able to install the pit and fix it to the existing slab. The water in the excavation prevented us from lowering the pit, as the pressure of the water caused it to rise.
Once the pit has been installed and adjusted horizontally and vertically in relation to the future finished ground level (+20cm), the company will Zwickert created a wooden structure around the entire perimeter of the pit to avoid having to fill the entire excavation with concrete, which was 1 metre wider than planned.
The pit was finally delivered in July, complete with two pit covers. At each end of the workshop pit, 1 pneumatically-operated aluminium cover has been installed. This allows the mechanics to work in complete safety. When a bus occupies half the pit, the other half remains unoccupied. From now on, users will be able to secure the unused half using the second cover. It's the ultimate in workshop and bus pit safety.
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