Application of Non-Destructive Techniques in the Inspection of the Wooden Roof of Historic Buildings: A Case Study

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The aim of this paper is to show the results of applying non-destructive inspection techniques (thermography, ultrasounds and microdrilling) during the inspection works of a protected building. These non-destructive techniques have been applied in the inspection of the wooden roof to identify deterioration, density loss and defects as a means of assessing its conservation status. This work concludes that the union of these nondestructive techniques constitutes an accurate diagnostic tool for the on-site inspection of wooden structures and the evaluation of their conditions. Thermography allows to distinct moisture contents while ultrasound detects density loss in areas of the wood with high moisture content.

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233-242

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September 2013

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[1] Palaia, L, Monfort J, Sánchez R, Gil L, Álvarez A, López V, Tormo S, Pérez C, Navarro, P. Assessment of timber structures in service, by using combined methods of non-destructive testing together with traditional ones,. 9th International Conference on NDT of Art, Jerusalem Israel, May (2008).

Google Scholar

[2] Palaia, L. "Structural failure analysis of timber floors and roofs in ancient buildings at Valencia (Spain). ICOMOS IWC- XVI International Symposium, Florence, Venice and Vicenza, November (2007).

Google Scholar

[3] Rodríguez Liñán, C, Morales Conde M J, Rubio de Hita P and Pérez Gálvez F. The Application of Non-Destructive Techniques in the Inspection of Wooden Structures of Protected Buildings: The Case of Ntra. Sra. De Los Dolores Church (Isla Cristina, Huelva)., International Journal of Architectural Heritage, (2013).

DOI: 10.1080/15583058.2013.771292

Google Scholar

[4] Cruz, H, Yeomans D, Tsakanika E, Macchioni N, Jorissen A, Touza M, Mannucci M, and Lourenço Paulo B. Guidelines for the on-Site Assessment of Historic Timber Structures., International Journal of Architectural Heritage, (2013).

DOI: 10.1080/15583058.2013.774070

Google Scholar

[5] Rodríguez Liñán C., Morales Conde MJ, Rubio de Hita P., and Pérez Gálvez F. Inspection with nondestructive techniques of a historic building: Oratorio San Felipe Neri (Cádiz),. Informes de la Construcción, Vol. 63, No 521 (2011) 13-22.

DOI: 10.3989/ic.10.032

Google Scholar

[6] Ronca, P., Gubana. Mechanical characterisation of wooden structures by means o fan in situ penetration test,. Construction and Building Materials Vol. 12, (1998) 233-243.

DOI: 10.1016/s0950-0618(97)00080-9

Google Scholar

[7] Lourenço, P, Feio A, and Machado J S. 2007. Chestnut Wood in Compression Perpendicular to the Grain: Non-Destructive Correlations for Test Results in New and Old Wood., Construction and Building Materials, Vol. 21 No 8 (2007) 1617-1627.

DOI: 10.1016/j.conbuildmat.2006.07.011

Google Scholar

[8] Machado, J S "Avaliaçao da variaçao das propriedades mecânicas de pinho bravo (Pinus Pinaster Ait) por meio de ultra-sons. PhD thesis. Technical University of Lisbon. (2000).

Google Scholar

[9] Machado, J S and Palma P. Non-Destructive Evaluation of the Bending Behaviour of in-Service Pine Timber Structural Elements., Materials and Structures. Vol 44 No 5 (2011) 901-910.

DOI: 10.1617/s11527-010-9674-9

Google Scholar

[10] Machado, José, Pedro Palma, and Sofia Simões. Ultrasonic Indirect Method for Evaluating Clear Wood Strength and Stiffness. " (2009) NDTCE, 09, Non-Destructive Testing in Civil Engineering Nantes, France, June 30th – July 3rd, (2009).

Google Scholar

[11] Henriques, D.F., Nunes, L., Machado, J.S. and de Brito, J. Timber in buildings: Estimation of some properties using Pilodyn® and Resistograph®, Proceedings of the XII DBMC, International Conference on Durability of Building Materials and Components, Porto, Portugal, April (2011).

Google Scholar

[12] Calderoni, C., G. De Matteis, C. Giubileo, and FM Mazzolani. Experimental Correlations between Destructive and Non-Destructive Tests on Ancient Timber Elements., Engineering Structures Vol. 32 No 2 (2010) 442-448.

DOI: 10.1016/j.engstruct.2009.10.006

Google Scholar

[13] Ceraldi, C., V. Mormone, and E. Russo Ermolli. 2001. Resistographic Inspection of Ancient Timber Structures for the Evaluation of Mechanical Characteristics., Materials and Structures Vol. 34 No 1 (2001) 59-64.

DOI: 10.1007/bf02482201

Google Scholar

[14] Falcón Márquez, T. Arte hispalense. Pedro de Silva. Arquitecto Andaluz del Siglo XVIII. Sevilla (1979).

Google Scholar

[15] Information on http: /es. wikipedia. org/org/wiki/Anexo: Patrimonio_ His%C3%B3rico_ Andaluz_en_la_Comarca_Metropolitana_de_Huelva.

Google Scholar

[16] Kaplan H. Practical applications of infrared thermal sensing and imaging equipment,. SPIE Optical Engineering Press, Bellingam, Washington, (1999).

Google Scholar

[17] Pitts D, Sissom, L. Heat transfer,. McGraw Hill.

Google Scholar

[18] Balageas, D. Infrared thermography: a multifaceted technique for nondestructive evaluation (NDE)., END IV Pan American Conference, Buenos Aires, (2007).

Google Scholar

[19] Morales Conde, MJ. Estudio y revisión de técnicas no destructivas (termografía de infrarrojos, ultrasonidos y resistógrafo) aplicadas a la inspección e intervención de forjados de madera,. Tesis doctoral. Universidad de Sevilla (2012).

DOI: 10.3989/mc.2012.62410

Google Scholar

[20] UNE-EN 408: 2011. Estructuras de Madera. Madera aserrada y laminada encolada para uso estructural. Determinación de algunas propiedades físicas y mecánicas.

DOI: 10.20868/upm.thesis.415

Google Scholar

[21] UNE EN 384: 2010. Madera estructural. Determinación de los valores característicos de las propiedades mecánicas y la densidad.

Google Scholar

[22] Wayne, W., Wilcox, W. Detection of early stages of wood decay with ultrasonic pulse velocity,. Forest Products J. Vol. XXXVIII. Nº 5. (1988) 68-73.

Google Scholar

[23] Rinn F, Schweingruber F- H, Schär. Resistograph and X-ray density charts of wood. Comparative evaluation of drill resistance profiles and X-ray density charts for different wood species,. Holzforschung 50(4) (1996) 303-311.

DOI: 10.1515/hfsg.1996.50.4.303

Google Scholar

[24] Machado J S, Cruz H Assessment of timber structures. Determination of density profile by non-destructive methods,. Revista Portuguesa de Engenharia de Estruturas 42, (1997), pp.15-18.

Google Scholar

[25] UNE EN 338: 2010. Madera estructural. Clases resistentes.

Google Scholar