Podczas okresowych kontroli dokonuje się sprawdzenia stanu technicznego i oceny przydatności obiektu budowlanego do dalszego bezpiecznego użytkowania poprzez: zidentyfikowanie symptomów zużycia technicznego obiektu oraz oszacowanie wpływu tego zużycia na właściwości użytkowe i sprawność techniczną obiektu budowlanego. W referacie zaproponowano ocenę stanu technicznego obiektów budowlanych bazującą na logice czterowartościowej.

In the modern world, knowledge is treated as another resource necessary for the development of civilization. An important element is information, thanks to which you can update knowledge and thus create a compendium of knowledge. Knowledge and its organization is particularly useful in construction. The article proposes a knowledge map, which is a record of domain knowledge. The fields were designated there, and the fields were assigned elements of importance in the life cycle of the building.

The thermal diffusivity of building materials is an extremely important parameter influencing the subsequent thermal comfort of building users. By definition, thermal diffusivity describes how quickly heat from a hot source can flow through a material. Therefore, this parameter includes both the thermal conductivity and the heat capacity of the material. This parameter is often neglected in heat-related calculations which, in the case of dynamic problems, leads to unreliable results. It should be taken into account that heat flows through all materials at a finite speed. On the other hand, knowing the correct thermal diffusivity value of building materials, it is possible to accurately determine the internal parameters in rooms over time. There are several methods for determining thermal diffusivity, most of which are destined to determine this property in laboratories. The aim of the present research is to show how the thermal diffusivity of materials can be determined in existing buildings. The presented method can be used to determine more real thermal parameters used for thermal calculations in buildings, for example, during energy audits or when calculating the demand for cooling for air conditioning or heat for space heating. This research presents the results for a 60 cm brick wall. Thermal diffusivity was determined for specific summer and winter days—most representative of the whole year. This research has shown that the applied method should be used in the summer period, due to the fact that the wall has greater temperature fluctuations. The obtained results are comparable with the previously mentioned laboratory methods. However, due to the fact that the materials analyzed on the spot, the results are more reliable, and also take into account changes in the value of thermal diffusivity resulting from the use of binders, inaccuracies in joining and external layers made of other materials.

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Building objects are anthropogenic objects that are born - planning, arise - design, develop - build and die - are demolished or modernized at the end of their lives. In this way, they create a life cycle in which human needs in the field of broadly understood construction are met.The article presents the use of engineering for the analysis and assessment of the construction life cycle."The essence of engineering object construction is the procedure leading to the creation of a safe object throughout its life cycle."