A diagnostic process to involve users in built environment maintenance. The Metrics Project for the historic center of Naples

The cultural coordinates for maintenance, at the urban scale have been marked, over the last decades, by attributing to experts the inspection and monitoring activities. In the perspective of the ISO 37120:2014 Sustainable development of communities, this paper deals with the idea of involving users in the built environment management process. Referring to vulnerable settlements, a prosumer perspective informs the approach for maintenance. The paper introduces and discusses the results achieved by an interdisciplinary team, managed by the Regional High Technology District for Sustainable Buildings, Stress. Within a wide research experience devoted to city centers – Metrics Project, 2013-2016 - , the proposal founds on a concept of built environment as commons, tying its conservation and management to the activation of a wide community. The maintenance processes are redesigned,on the assumption that any user is the more receptive privileged observer for the possible deviations from expected behavior in work; processes of care for the built can be arranged depending on the community attitude in sharing visions. Case study is in the Avvocata district, in Salita Tarsia. A gradual strategy informs the hypothesis that people who benefit from the block continuously, can recognize the onset of the fault signals according to a learning-by-doing perspective. A database of the states according to which any fault event can evolve, supports users in the identification of significant conditions, in order to prevent any cessation of the ability of an entity to perform the requested function. Built for functional areas, it groups the sensitive maintenance sets and details how and when to make the observation with respect to the life cycle of the asset. Taking into account the loss of settlements qualities with the alteration of original condition between the physical, social and economic components, the scientific contribution comes to a foreshadowing of new commitment scenarios for a maintenance coordination service.