Harmonising the classification of diagnosis methods within a global building inspection system: Proposed methodology and analysis of fieldwork data

Abstract

In the context of developing a global inspection system based on previously developed expert inspection systems for specific building elements/materials, this research highlights the importance of a coherent harmonisation of the diagnosis methods in a global classification list. This global inspection system refers to twelve elements/materials (roofing, façades and flooring) used in the envelope of current buildings. Individual expert classification lists of diagnosis methods were analysed to propose a global classification list considering five criteria of harmonisation, and the effects of unifying tests on inspection procedures are discussed. Furthermore, data from inspection campaigns in previous research on the recommendation of diagnosis methods are analysed. The measurement of the ambient and surface temperature and humidity is the diagnosis method most commonly associated with detected defects in more than one building element/material. Additionally, analysing the established relationship between defects and diagnosis methods, infrared thermography is considered useful for a broad range of defects. The use of a crack width ruler and a crack-measuring microscope is highly associated with defects in many types of building elements/materials.