representing the origin of the teixeira duarte group, which started as a construction company, construction is not only the core business of the group as a whole, but also that of its biggest and most emblematic company: “teixeira duarte – engenharia and construções, s.a.” operating in the fields of geotechnical engineering and rehabilitation, buildings, infrastructures, metalworking, underground works, railway works and maritime construction works, “teixeira duarte – engenharia and construções, s.a.” relies on a formwork and pre-stressing operations centre; a large-scale equipment department; and a materials laboratory. it also receives support from the teixeira duarte operations centre located at montijo.