Vegetables nursery Venlo Greenhouse, Trellis girders 9,60 m. Postheight 4,50 m. Bays 3,20 m., Sections 4,50 m. Steel gutters Roofglass 150 cm. wide 2-panes ventilation windows 120 cm. deep 40.000 m2 groundworks (levelling and profiling) 1.745 m2 concrete works Watertechnical installations Electrotechnical installations Heating installations