A Diagnostic System Created for Evaluation and Maintenance of Building Constructions

A Diagnostic System Created for Evaluation and Maintenance of Building Constructions

Attila Koppány (Széchenyi István University, Hungary)
DOI: 10.4018/978-1-61520-659-9.ch015

Abstract

The successful diagnostic activity has an important role in the changes of the repair costs and the efficient elimination of the damages. The aim of the general building diagnostics is to determine the various visible or instrumentally observable alterations, to qualify the constructions from the suitability and personal safety (accidence) points of view. Our diagnostic system is primarily based on a visual examination on the spot, its method is suitable for the examination of almost all important structures and structure changes of the buildings. During the operation of the diagnostic system a large number of data–valuable for the professional practice–was collected and will be collected also in the future, the analysis of which data set is specially suitable for revaluing construction and the practical application of the experiences later during the building maintenance and reconstruction work. For using the system a so-called “morphological box” has been created, that contains the hierarchic system of constructions, which is connected with the construction components’ thesaurus appointed by the correct structure codes of these constructions’ place in the hierarchy. The thesaurus was not only necessary because of the easy surveillance of the system, but to exclude the usage of structure-name synonyms in the interest of unified handling. The analysis of which data set is specially suitable for revaluing earlier built constructions and can help to create knowledge based new constructions for the future.
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Diagnostic System

A faulty diagnosis can lead to incorrect decisions causing financial loss. The research group of the Széchenyi István University (Győr) worked out such a comprehensive diagnostic system (see Figure 1) which contains a common inspection method ‘according to Molnárka (2000) for the vast majority of constructional components (for traditional and actually used constructions in Hungary), and can be used for computer data registration and analysis.

Figure 1.

The morphological box (Zwicky 1966) is connected with the construction components’ thesaurus denoted by the correct structure codes of these constructions’ place in the hierarchy. The theory of using morphological box for data registration in the process of building diagnostic (Koppány 1977) was published in Hungary seven years ago. The “matrix” construction of our morphological box fits to the methodology of the visual examination and to the hierarchy of the common building constructions in Hungary ‘according to Koppány (2002) (see. Figure 2).

Figure 2.

The main task is of our thesaurus (graph-version) to help the visual survey. It can be very useful to understand the hierarchy and the connections in the field of building constructions (see Figure 3). The thesaurus is not only necessary the easy surveillance of the system, but to exclude the usage of structure-name synonyms in the interest of unified handling. We have another tool too for the quick survey of the results of the visual examination, it is the hexagonal morphological box. The box shows the actual checked constructions or all constructions of the building. The various conditions of the building constructions can be marked with corresponding colours in the box-fields (see Figure 4).

Figure 3.

Figure 4.

The results of an examination are shown on Figure 5 and Figure 6. The diagnostic system has been successfully checked in the course of a course of an examination involving 60 buildings.

Figure 5.

Figure 6.

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