Latest revision as of 14:30, 30 November 2021

Abstract

Historic roof structures are complex systems which cannot be assessed individually but need a more holistic approach, in order to understand them as a whole. The great variety of contexts in which the building and its roof were placed, of architectural styles which ultimately influence the shape of the roof but also the diversity of technical solutions used by the craftsman to respond to these needs and its state of conservation, make a multidisciplinary approach necessary. While 18th and 19th century roof structures from Timisoara, a city from the western part of Romania, proved out to be complex structures which a high value from urban planning, architectural, symbolical and structural point of view, the 20th century is a period of transition with a wide array of influences, mix of styles and technological improvement of the structures. Therefore, based on the roof structure of the Löffler Palace, built between 1912-1913, placed in the historic centre of the city, the paper tries to highlight that roof structures from this period are also far more than structural systems. Based on a thorough historical analysis and visual inspection of the structure, by using a multidisciplinary assessment procedure [1], the paper shows that 20th century roof structures are closely related to the building they belong, to their context and have a significant philosophical/symbolic and aesthetical value. At the same time, the procedure also addresses the role of assessment, diagnosis, conservation and maintenance, the structural integrity of the roof, its influence on the seismic behaviour of the historic building, highlighting the connection between the roof, the building and its environment.

Full document

References

[1] ICOMOS. Principles for the Analysis, Conservation and Structural Restoration of Architectural Heritage. Victoria Falls, Zimbabwe, (2003).

[2] Cruz, H., Yeomans, D., Tsakanika, E., Macchioni, N., Jorissen, A., Touza, M., Mannucci, M., Lourenço, P., Guidelines for On-Site Assessment of Historic Timber Structures. Int J Archit Herit (2015) 9(3):277–289.

[3] Riggio, M., D’Ayala, D., Parisi, M.A. and Tardini, C., Assessment of heritage timber structures: Review of standards, guidelines and procedures. J Cult Herit (2018) 31:220–235.

[4] Sousa, H.S., Machado, J.S., Branco, J.M. and Lourenço, P.B., Onsite assessment of structural timber members by means of hierarchical models and probabilistic methods. Constr Build Mater (2015) 101:1188–1196.

[5] Sousa, H.S., Branco, J.M., and Lourenço, P.B., A Holistic Methodology for Probabilistic Safety Assessment of Timber Elements Combining Onsite and Laboratory Data. Int J Archit Herit (2016) 10(5):526–538.

[6] Gocál, J., Krušinský, P., Capková, E. and Kekeliak, M., Geometric and static analysis of the historical truss in village Belá Dulice. (2014).

[7] Krušinský, P., Capková, E., Gocál, J. and Holešová, M., Geometric and static analysis of the historical trusses in roman catholic church of the Holy Kozma and Damian in the Abramová village. Civ Environ Eng (2015) 11(2):136–141.

[8] Krušinský, P., Gocál, J. and Capková, E., Static analysis of historical trusses. Wiadomości Konserw (2016) 47:120–127.

[9] Tannert, T., Dietsch, P., Bertolini-Cestari, C. and Kasal, B., COST Action FP1101 - Assessment, Reinforcement and Monitoring of Timber Structures. In: Quenneville P (eds.). World Conference on Timber Engineering (WCTE).Curran Associates, Inc., Auckland, New Zealand, (2012), pp. 515–519.

[10]Kasal, B., Assessment, reinforcement and monitoring of timber structures-COST FP1101. Adv Mater Res (2013) 778:1037–1040.

[11]D’Ayala, D., Branco, J.M., Riggio, M., Harte, A., Kurz, J. and Descamps, T., Assessment, reinforcement and monitoring of timber structures: FPS Cost Action FP1101. In: Peña F (eds.). 9th International Conference on Structural Analysis of Historical Constructions (SAHC 2014).Springer, Mexico City, Mexico, (2014).

[12]Krušinský, P., Gocál, J. and Capková, E., Geometric and static analysis of the historical truss above presbytery of the Saint Peter of Alcantara monastery church in Okolicne. Procedia Eng (2015) 111:485–490.

[13]Krušinský, P., Capková, E. and Gocál, J., Comparison of Two Medieval Trusses from the Viewpoint of Geometric and Static Analysis. Adv Mater Res (2015) 1122:243–248.

[14]Gocál, J., Krušinský, P., Capková, E. and Kekeliak, M., Analysis of the historical truss in village Belá Dulice. Acta Sci Pol Form Circumiectus (2015) 14(1):57–73.

[15]Keller, A. and Mosoarca, M., A complex assessment of historic roof structures. In: Arun G (eds.). 4th International Conference on Structural Health Assessment of Timber Structures (SHATIS’17).(2017), pp. 157–168.

[16]Andreescu, I. and Keller, A., Complex features in assessing historic roof structures. In: Mazzolani F (eds.). 3rd International Conference on Protection Of Historical Constructions, PROHITECH’17. (2017).

[17]Mosoarca, M. and Keller, A., A complex assessment methodology and procedure for historic roof structures. Int J Archit Herit (2018) 12(4):578–598.

[18]Keller, A., Parisi, M.A., Tsakanika, E. and Mosoarca, M., Influence of historic roof structures on the seismic behaviour of masonry structures. Proc Inst Civ Eng - Struct Build (2019):1–27.

[19]Opris, M., Timisoara: small urban monography (in Romanian). Editura Tehnica, Bucarest, (1987).

[20]Geml, J., Old Timisoara (in Romanian). Editura Cosmopolitanart, Timisoara, Romania, (2016).

[21]Drdacky, M.F., Wald, F. and Mareš, J., Modelling Of Real Historic Timber Joints. Trans Built Environ (1999) 39:169–178.

[22]Descamps, T. and Lemlyn, P., Effects of the rotational, axial and transversal stiffness of the joints on the static response of old timber framings. In: Mazzolani F (eds.). Protection of Historical Buildings, PROHITECH 09. CRC Press, Taylor & Francis Group, Rome, Itlay, (2009), pp. 291–286.

[23]Branco, J.M. and Descamps, T., Analysis and strengthening of carpentry joints. Constr Build Mater (2015) 97:34–47.