The Technologies of Architectural Survey: A New Comparison Based on the Tower of Sotillo de la Ribera, Burgos Sara Morena 1(&) , Salvatore Barba 1 , Elena Gómez Merino 2 , and José Ignacio Sánchez Rivera 3 1 Department of Civil Engineering, University of Salerno, Salerno, Italy {smorena,sbarba}@unisa.it 2 School of Engineering and Architecture, Nebrija University, Madrid, Spain emerino@nebrija.es 3 School of Architecture, University of Valladolid, Valladolid, Spain jignacio@arq.uva.es Abstract. The paper offers an original research about the analysis and the comparison of different techniques of survey concerning the architectural field – image-based and range-based – throughout the development of the theory of errors in order to evaluate reliability and precision of the results. In particular, this analysis will be focused on the tower of the parochial Church of Santa Águeda, a building located in the small village of Sotillo de la Ribera, within the province of Burgos (Spain). The first part of this work, therefore, has been submitted to the implementation of different methodologies, from the direct survey used as a basis, to the procedure to represent graphically the results (elevation, orthophoto and 3D model). The second phase, better illustrated here, deals with the validation of everything taken into account in order to evaluate the reliability and the precision of the graphics generated by means of traditional survey, photogrammetric survey and laser scanner. Keywords: Traditional survey Á Photogrammetry Á Laser scanner Á Measure theory Á Castile and león 1 Introduction The attention devoted in the last years to the protection and conservation of architecture has contributed to increase the interest in the new technologies and the innovative methodologies of architectonic survey. Techniques that provide an added value to the knowledge of the Cultural Heritage, useful for both metric and historical-artistic research, thus providing suf ficient elements not only for its conservation but also for its valorisation and dissemination. In this paper, we will tackle the case of study of the tower of Sotillo de la Ribera (Fig. 1), a rectangular-based bell tower executed around 1740. The first part of the work provides for the data collection and processing phase according to three different approximations of architectural survey in order to manage the metric information in different ways. Later, the research focuses on the comparison between the different © Springer International Publishing AG 2018 G. Amoruso (ed.), Putting Tradition into Practice: Heritage, Place and Design, Lecture Notes in Civil Engineering 3, DOI 10.1007/978-3-319-57937-5_50