9 th International Scientific Conference on Production Engineering DEVELOPMENT AND MODERNIZATION OF PRODUCTION RIM 2013 351 PRESTRESSED CONCRETE BEAMS PRODUCTION PROCESS Okugić Husein, Edis Softić University of Bihać, Tehnical faculty of Bihać, dr. Irfana Ljubijankića bb, Bosnia and Herzegovina Key words: prestressed beam, prefabricated hall, bearing power, industrial production, prestressing, batch production, serial production, transportability, assemblage, accuracy of production ABSTRACT: Prestressed beams have an important key role in making the prefabricated halls and other constructions (for example the bridges) that require high bearing power. Production is accomplished in the factory where industrial production is used. Prestressing is considered as a case when additional loading is added to an element by force. Production of these beams is usually complex process. Despite that fact, prestressed beams have numerous advantages as compared to traditional reinforced concrete and this is why they’re widely used in every part of the world. Referring to the methods of prestressing, production process uses pre- tensioning and post-tensioning. Referring on how the connection between prestressed wires and concrete was done there are bonded and unbonded post-tensioned concrete. No matter what kind of prestressing was used, the objective of the production process is to produce beams which meet requirements to be effective and economical. In practice, batch and serial production are often used in order to achieve transportability, assemblage and accuracy of production. 1. INTRODUCTION In order to achieve a long range in building construction and to increase durability, prestressed concrete is most common used nowadays. Although production process of concrete elements with prestressed wires is considerably more expensive than traditional reinforced concrete, advantages of construction with prestressed wires are numerous. That is the reason why production process of prestressed beams must constantly be bettered and improved. Predsressed concrete manufacturing process is usually done in factory but it can also be done to the construction-site. The objective of manufacturing process mentioned above is to achieve industrial production. Production of prestressed concrete elements is accomplished by using serial and batch production. This is the way to achieve accuracy of production, transportability and assemblage. The objective of work "Prestressed concrete beams production process" is to describe technology and process of making the prestressed concrete elements. Some of the methods of prestressing and the most important production stages that used during production are presented in this work. 2. THEORETICAL BASICS In this chapter will be summarized the basic principles on prestressed concrete that are very important for easily understanding its using and realization of production process [4].