building before and after the thermo-modernization. Polish Academy of Sciences. The Committee on Environmental Engineering, Monographs: Polish environmental engineering after five years in the European Union 2009;3(60):207-216.
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 Kryza M, Mill W, Dore AJ, Werner M, Blas M. Calculation of sulphur and nitrogen deposition with the frame model and assessment of the exceedance of critical loads in Poland. Ecol Chem Eng S. 2013;20(2):279-290. DOI: 10
As a result of the necessity to improve energy properties of prefabricated buildings, their thermo-modernizations are performed. In the paper various approaches to the modelling of prefabricated load bearing walls before and after thermo-modernization are presented. Simple one layer models with extra mass from ceilings and equivalent stiffness as well as multilayer ones are taken into consideration using the finite element method software. Values of the natural frequencies of the wall horizontal vibrations calculated using the various models, are compared. It was proved that even the very simple model with equivalent stiffness allows to compute natural vibration frequencies of wall with acceptable accuracy for engineering practice.
regarding the quality of air in this area. The source of pollutants is primarily the inefficient combustion process in residential and public buildings. The buildings usually require thermomodernization and exchange of boilers [ Mirowski and Orzechowska, 2015 ]. In addition, residents also burn prohibited items, such as garbage, industrial waste, or fuel of very poor quality. Pollution from the transport sector is accountable for the formation of low emissions as well.
There has been an intensification of activities aimed at improving air quality in this region in
Accommodation tourist industry is characterized by high variability. For this category of services not only the location is crucial- that does not change, but also the standard, prices and seasonality of services. In the recent years, leisure centers performing functions only during the summer time have seen the possibility to extend their activities beyond the summer months. The reasons for this are the local investments requiring qualified staff which comes from different parts of the country, Europe and the world while creating demand for accommodations. To meet the possible demand needs and to adapt to cold season, performing thermo-modernization works is necessary. In order to find the best solution and answer those needs, analysis of the profitability of the investments in a chosen holiday resort was carried out. The article presents the results of the analysis based on the payback period, LCC analysis and assessment of the investments risk.
The article presents issues connected with renovating multi-storey precast concrete buildings, resulting from the consequences of construction defects occurring over the course of the building process and use of the buildings, as well as design flaws and construction defects when insulating external partitions. Analyses and conclusions which stem from them cover issues of renovation in the light of: damage in the vertical and horizontal joints, damage to the connection of layers in three-layer load-bearing and curtain walls, the effect of the damage on the possibilities of carrying out functional modernization of residential units, the effect of the damage on the effectiveness of thermo-modernization - new problems related to faulty insulation
comfort in Danish summer weather. Building and Environment 2018:136:269–278. doi:10.1016/j.buildenv.2018.03.046
 Ickiewicz I. Building thermomodernization and reducing air pollution. Ecological Chemistry and Engineering S 2013:20(4):805–816. doi:10.2478/eces-2013-0056
 Ickiewicz I. Ecological and economic aspects of modernizing district heating systems in north-eastern Poland. Ecological Chemistry and Engineering S 2011:18(4):429–443.
 PN-EN 13779:2008 Ventilation for non-residential buildings. Performance requirements for ventilation
understand how pasteloza ( Fig. 1 .) works in practice.
Thermo-modernization, July 9 2018, Osiedle Rusa, Poznań
Source: photo by Sara Nikolić, 2018.
This paper is a ‘by-product’ of an ethnographic mapping project that took place in Poznań in 2018, from April 29 to July 30. Even though some other Polish cities could have been more suitable for researching the phenomenon of pasteloza , Poznań was imposed since University of Belgrade, where I am a doctoral student in the department of ethnology and anthropology at Faculty of