SWD / Neubau WH Fritz-Löffler-Straße / 304 Erweiterter Rohbau

The tender involves extended structural shell construction works for a new residential building on Fritz-Löffler-Straße. The scope includes excavation of approximately 4,165 cubic metres of foundation pit, installation of gravel base layers over around 1,407 square metres, and separation, loading, and removal of about 877 cubic metres of borehole material. Backfilling of structures covers roughly 2,339 square metres, with trench construction of 320 cubic metres and installation of around 415 metres of base pipes. Soil transport and disposal are required for approximately 1,766 tonnes of soil classified Z0-Z2 and 8,788 tonnes under DepV DK I-DK III. Construction of foundation pit support includes 60 square metres of soldier pile walls and bored in-situ concrete piles with diameters of 0.88 metres and lengths between 12 and 25 metres, totalling 1,401 metres, plus 78 square metres of overlapping bored pile walls. Two tower cranes with capacities of 250-280 tonne-metres and heights of 42-44 metres are to be provided. Concrete works encompass clean concrete layers over 1,021 square metres, reinforced concrete strip foundations of 204 cubic metres, floor slabs covering 833 square metres, waterproof reinforced concrete for elevator underpasses and pump sumps, and various reinforced concrete walls, ceilings, and attica elements totalling several thousand square metres. Prefabricated components include 26 straight stair flights, four concrete light wells, approximately 289 metres of reinforced concrete balconies, and 42 metres of reinforced concrete retaining walls. Additional works include installation of building expansion joints, 416 tonnes of reinforcing steel, 100 metres of grounding systems, waterproofing of floor slabs and foundations over 1,381 square metres, perimeter insulation of foundations and external walls covering 521 square metres, and extensive scaffolding and safety installations. Interior finishes involve two-layer lime-cement plaster over 563 square metres and two-layer gypsum plaster on walls and reveals covering over 4,400 square metres combined. The contract also requires provision of two construction hoists and multiple stair access points.