BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI Publicat de Universitatea Tehnică „Gheorghe Asachi” din Iaşi Volumul 62 (66), Numărul 2, 2016 Secţia CONSTRUCŢII. ARHITECTURĂ A COMPARATIVE STUDY OF TIMBER STRUCTURES FOR PITCHED ROOFS BY IOANA-SORINA ENŢUC * , ALEXANDRU SECU, NICOLAE ŢĂRANU, ION FLORENŢA, SEBASTIAN-GEORGE MAXINEASA and GABRIEL OPRIŞAN “Gheorghe Asachi” Technical University of Iaşi, Faculty of Civil Engineering and Building Services, Received: Juny 06, 2016 Accepted for publication: June 27, 2016 Abstract. Wood as building material has been used since ancient times due to its performance and generous applicability in implementation of various structural elements and building systems. The need to reduce losses in the process of implementing operational structures in construction, from excessive consumption of material has led to the development of new structural systems for wood construction and roofing structures. Frequently, modern structures of pitched roofs have in their composition systems made of prefabricated structural components and wood products. This paper examines several embodiments of wooden roofing structures, taking into account the structural system, materials and dimensions of lumber assortments and material consumption for various types of pitched roofs. Keywords: timber structures; pitched roofs; material consumption; rational design. 1. Introduction Wood has been used in construction since ancient times due to the performances of the material and its closeness to the natural environment. Wood * Corresponding author: e-mail: ioana.entuc@tuiasi.ro