Survey of decay of tezone ‘105’: methodology for acquisition of data

Abstract Within the multidisciplinary study concerning one of the covered dockyards (called tezone 105) erected in the Arsenal of Venice, carried out by the ‘Target Venezia’ CNR Project, it will be presented here a preliminary work concerning the survey of decay 1 . This analysis is strictly connected with the other works carried out by the Operative Units of the ‘Target Venezia’, especially with the stratigraphical survey 2 and the chemical and microstructural characterisation of mortars 3 and bricks 4 . First, the survey of decay has been based on the stratigraphical investigations of the tezone structure, which has allowed the classification of the different building phases over a long period (from the XVI until the first half of the XX century). Second, a computer aided methodology has been applied in order to make the research easier and to allow multiple queries either to know which kind of decay are present in every point of the surfaces and the global extension of each typology of degradation 5 .