Graduate in civil engineering of the school of La Martiniere in Lyon, Guy Barral counts among the founding members of Sud Architectes. He joined the agency as project manager, he is the man for the concrete, the one who ensures the organisation and the good course of the building sites. Thanks to his good knowledge of the different building trades he also assumes the function of the HRM. A large number of projects has profited from his long experience: the ZAC of Vancia (apartments), the Foyer Sacerdotal and the Chapelle des cierges in Ars, the retirement home of Venissieux, the A.B.B. factory in Decines or even Europarc.