4. МЕЂУНАРОДНА КОНФЕРЕНЦИЈА Савремена достигнућа у грађевинарству 22. април 2016. Суботица, СРБИЈА | ЗБОРНИК РАДОВА МЕЂУНАРОДНЕ КОНФЕРЕНЦИЈЕ (2016) | 51 DESIGN OF WALL DIAPHRAGMS ACCORDING TO EC 5 Dragoslav Stojić 1 Radovan Cvetković 2 Stefan Conić 3 Nemanja Marković 4 UDK: 674.11.046 DOI:10.14415/konferencijaGFS 2016.107 Summary: This paper presents basic concept for analyzing shear wall diaphragms in timber frame structures – platform frame construction. It also provides important instructions and notes on the factors that may have influence on the racking resistance of vertical panels. Providing lateral and torsional stability of high – storey buildings made of timber, in general, is achieved by bracings and / or formation of the roofs, floors and wall diaphragms. The basic requirements that must be met according to ultimate limit state are: static equilibrium and racking resistance of wall panels. For the racking design of timber diaphragms Eurocode 5 provides two simplified methods (Method A and Method B). The goal of the analysis is to show different aspects of modern calculation methods and their effectiveness compared to a traditional approach to the problem. Keywords: Shear wall, Eurocode 5, racking resistance. 1. INTRODUCTION Vertical and horizontal loads acting on the timber structure cause certain effects that must be adequately analyzed. In light-frame buldings, such as platform type of structure, ensuring the stability of all timber members and elements represents very important task for structural engineers. Ensuring the stability of frame system of timber buildings can be achieved in several different ways. As one of the generally accepted ways is desinging of wall, floors and roof panels (diaphragms). Each of this structural elements needs to fulfil demands ultimate limit state (ULS) and serviceability limit state (SLS) and all other requirements which EC5 [1] requires. Depending on the stiffness of floor diaphragms and walls panels there are several different distribution of shear forces and 1 Prof. Dr Dragoslav Stojić, The Faculty of Civil Engineering and Architecture, University of Niš, Aleksandra Medvedeva 14, Niš, Serbia, e – mail: dragoslav.stojic@gmail.com 2 Ass. Mr Radovan Cvetković, The Faculty of Civil Engineering and Architecture, University of Niš, Aleksandra Medvedeva 14, Niš, Serbia, e – mail: radovancvetkovic @yahoo.com 3 Stefan Conić, M.Sc. C. Eng. PhD student, Scholar of the Ministry, The Faculty of Civil Engineering and Architecture, University of Niš, Aleksandra Medvedeva 14, Niš, Serbia, e – mail: stefanvl989@yahoo.com 4 Ass. Nemanja Marković, C. Eng. PhD student, The Faculty of Civil Engineering and Architecture, University of Niš, Aleksandra Medvedeva 14, Niš, Serbia, e – mail: nemanjamarkovic85@gmail.com