construction work./ earthwork, canal and structural work./ earthwork, sewer work and structural work are to be provided as entrepreneurial services, essentially: - construction site equipment / protection - site power supply / site equipment builder - preparation of excavation pit 1,600 m2 - earthworks for foundation strips - inlay work foundation earth / lightning protection / cable ducts 2000 m - exterior and under slab sewerage works with earthworks 450 m - construction of the shell of the building, some of which has two storeys, primarily in reinforced concrete and masonry, including the existing ice rink - 76 t of reinforced steel, 96 t of reinforced mesh - construction of prefabricated stairs - floor slab 546 m3 with structural waterproofing, insulation work 202 m2, approx. 2,890 m2 walls in in-situ concrete construction, approx. 2,000 m2 in-situ concrete ceilings - demolition / conversion work on the existing staircase / elevator shaft of the ice rink - construction of a 1000 m3 earth wall with strip foundations/staircases and open spaces