quality in the casting process – case study. In: METAL 2017: 26th Anniversary International Conference on Metallurgy and Materials, Ostrava: Tanger, pp. 2127.
Gajdzik, B. (2018). Models of production function for the steel industry after restructuring process with forecasts and scenarios of changes in volume of steel production. Gliwice: The Silesian University of Technology.
Gajdzik, B. (2017). Prognostic modeling of total global steel production. Metalurgija 1-2 (56), pp. 279-282.
Gajdzik, B. (2013). The road of Polish steelworks towards market
1. AISI, Standard for cold-formed steel framing - prescriptive method for one and two family dwellings 2001, American Iron and Steel Institute: Washington, D.C.
2. AISI, North American specification for the sesign of cold-formed steelstructural members. 2001, American Iron and Steel Institute: Washington, D.C.
3. AISI, Standard for cold-formed steel framing - General provisions. 2004, American Iron and Steel Institute: Washington, D.C.
4. AISI, Standard for cold-formed steel framing
1. PN-EN 1990:2004. Basis of structural design [in Polish].
2. Biegus A.: Probabilistic analysis of steel structures, Wydawnictwo Naukowe PWN, Warszawa-Wrocław 1999 [in Polish].
3. Gwóźdź M., Machowski A., Żwirek P.: Selected problems of reliability of steel skeletal building structures, Wydawnictwo Politechniki Krakowskiej, Kraków 2013 [in Polish].
4. PN-EN 1993-1-1:2006: Design of steel structures - Part 1-1: General rules and rules for buildings [in Polish].
This paper focuses on the analysis of two towers of an industrial plant exhibiting extreme deflection during service loads under heavy wind conditions. The towers are 90 m and 35 m in height, respectively and are interconnected with structural steel operating platforms.
The nuts have flown off at some bolted joints in the interconnecting steel structure due to high stress induced by deflections.
The deflections measured at the structural steel towers had nearly twice the value permitted by the respective standard in the case of the 90 m high tower and approached the value permitted by the standard in the case of the 35 m high tower.
The herein detailed complex study - covering the strength analysis of the towers, the analysis of wind effects, and the review of the foundations - has been elaborated in order to determine the causes and consequences of the experienced deflections at the plant as well as to conclude the eventual actions to be taken.
The primary consideration for the conduction of the tests and analyses the determination of the eventual actions to be taken was to retain the towers and not to have them demolished.
Y. Archakov, Vodorodoustojchivost stali, Metallurgia, Moskva, 1978.
E. Łunarska, O. Czerniajewa, A. Nakonieczny, Influence of surface treatments on 40HM steel resistance to general, pitting and stress corrosion, Surface Engineering 4 (2000) 12-19, (in Polish).
E. Łunarska, J. Michalski, Hydrogen behavior in the iron surface layer modified by plasma nitriding and ion boronising, Werkstoffe und Korrosion 51 (2000) 1-9.
P. Kula, The comparison
Deflection of Steel-Concrete Composite Beams under Negative Bending, Journal of Structural Engineering, 11/2004.
6. Nie J., Cai C. S.: Steel-Concrete Composite Beams Considering Shear Slip Effects, Journal of Structural Engineering, Vol. 129, No. 4, April 2003, pp. 495-506.
7. EN 1994-1-1:2008 Design of composite steel and concrete structures. General rules and rules for buildings.
8. Johnson R. P.: Composite Structures of Steel and Concrete. Volume 1. Beams, Columns, Frames and Applications in Building, Crosby Lockwood
 Smith, R., Fast reactor progress—slow but sure, Progress in Nuclear Energy. 1987, vol. 20, 2, pp. 71-88.
 Kittel, J., Frost, B., Mustelier, J., Bagley, K., Crittenden, G., and Van Dievoet, J., History of fast reactor fuel development, Journal of nuclear materials. 1993, vol. 204, pp. 1-13.
 Klueh, R., and Nelson, A., Ferritic/martensitic steels for next-generation reactors, Journal of Nuclear Materials. 2007, vol. 371, 1-3, pp. 37-52.
 Raj, B., and Vijayalakshmi, M., Ferritic steels and advanced ferritic
1. PN-EN 1993-1-2 Eurocode 3: Design of steel structures. Part 1-2: General rules - Structural fire design
2. PN-EN 1991-1-2 Eurocode 1: Action on structures. Part 1-2: General actions - Action on structures exposed to fire.
3. PN-EN 1993-1-1 Eurocode 3: Design of steel structures. Part 1-1: General rules and rules for buildings.
4. Gwoźdź M., Machowski A., The selected studies and calculations of building structures by probabilistic methods, Politechnika Krakowska, Krakow, 2011 [in