Wood can represent a valid and important alternative to the most commonly used structural materials for the restoration of masonry buildings, with a view to efficient, effective and "conscious" renovation. Today, the modern technologies allows to overcome the structural limits of solid wood due to its own anisotropy. The use of composite wood elements makes possible to obtain excellent mechanical performances that consent to evaluate aspects such as the use of low environmental impact retrofit strategies. The aim of this work is the analysis of mechanical parameters related to CLT (cross laminated timber) panels in order to determine their possible use in the structural restoration of masonry buildings. The CLT panels consist of solid wood planks superimposed so that each layer has the fibres rotated ninety degrees with respect to the adjacent layer. The layers (always in odd number and at least three) can be connected by discrete joints, pins and nails, or glued together. This configuration enables to product large structural elements with considerable thickness. Two different experimental test campaigns were carried out on samples of panels with three and five glued layers. The purpose of experimentation activities was to evaluate the bending deformation of the wooden elements and shear strength of the bonding sections. All the tests were processed according to the provisions contained in the UNI standards. The test results were then compared with different theoretical calculation models to determine the one that best represents the tested material. The tests outcomes have shown that some characteristics of the material, such as the remarkable ductility, open different scenarios of use for the CLT panels in the field of structural restoration of masonry buildings.

Full document

The PDF file did not load properly or your web browser does not support viewing PDF files. Download directly to your device: Download PDF document


[1] Boscolo Bielo, Marco. La Progettazione delle strutture in legno. (the design of wooden structures) ed. Roma: Legislazione Tecnica s.r.l. 2014

[2] Daniel Moroder, Tobias Smith, Andrew Dunbar, Stefano Pampanin, Andrew Buchanan. Seismic testing of post-tensioned Pres-Lam core walls using cross laminated timber. Engineering Structures ELSEVIER (2018)

[3] Ivan Giongo, Gianni Schiro, Maurizio Piazza. On the use of timber-based panels for the seismic retrofit of masonry structures. Conference: 3rd International Conference on PROTECTION OF HISTORICAL CONSTRUCTIONS Lisbon (2017)

[4] Sandoli Antonio, Pinto Mirko, Pampanin Stefano, Calderoni Bruno. Protezione sismica di edifici esistenti in c.a. mediante l'utilizzo di pareti lignee post-tese. (Seismic protection of existing buildings in reinforced concrete through the use of post-stretched wooden walls) Pistoia: ANDIS 2017

[5] Roensmaens B., Van Parys L., Carpentier O. and Descamps T. (2018) Refurbishment of existing timber floors with screwed CLT panels, International Journal of Architectural Heritage

[6] Gubana, A. (2015) State-of-the-art report on high reversible timber to timber strengthening interventions on wooden floors. Construction & Building Materials,

[7] Gubana, A., Melotto, M. Experimental tests on wood-based in-plane strengthening solutions for the seismic retrofit of traditional timber floors. Construction and Building Materials.

[8] Longarini, N., Crespi, P., Scamardo, M. Numerical approaches for cross-laminated timber roof structure optimization in seismic retrofitting of a historical masonry church. 2019 Bulletin of Earthquake Engineering.

[9] Longarini, N., Crespi, P., Zucca, M. Dissipative cross lam roof structure for seismic restoration of historical churches. 2018 REHABEND

[10] Ongaretto, E., Pozza, L., Savoia, M. Wood-based solutions to improve quality and safety against seismic events in conservation of historical buildings. 2016 International Journal for Quality Research

[11] Roensmaens, B., Van Parys, L., Branco, J., Descamps, T. Proposal of a CLT Reinforcement of Old Timber Floors. 2019 RILEM Bookseries

[12] Unuk, Ž., Premrov, M., Žegarac Leskovar, V. Development of an Innovative Approach for the Renovation of Timber Floors with the Application of CLT Panels and Structural Glass Strips. 2019 International Journal of Architectural Heritage

[13] Riggio, M., Tomasi, R., and Piazza M. (2014) Refurbishment of a traditional timber floor with a reversible tech-nique: importance of the investigation campaign for design and control of the intervention. International Journal of Architectural Heritage

[14] Basile Andrea, Frunzio Giorgio, Nicolella Maurizio, Scognamillo Claudio, Analisi LCC per componenti in legno lamellare esposti in esterni. (LCC analysis for laminated wood components exposed to the outside) ISTEA-Re-shaping the construction industryMaggioli Editore (2017)

[15] Frunzio, Giorgio, Di Gennaro, Luciana: Seismic structural upgrade of historical buildings through wooden deckings strengthening: the case of study of Palazzo Ducale in Parete, Italy. Firenze CINPAR 2018 Structural Integrity PROCEDIA ELSEVIER (2018)

[16] Curlante D. - Progettare strutture in legno lamellare, Dario Flaccovio Editore, 2014.

[17] Bellomo V.- Strutture in legno lamellare , Grafill , 2015

[18] Bergamasco, I., Gesualdo, A., Iannuzzo, A. and Monaco, M. (2018) ‘An integrated approach to the conservation of the roofing structures in the Pompeian domus’, Journal of Cultural Heritage, DOI: 10.1016/j.culher.2017.12.006.

[19] Frunzio, G., D’ Agostino, S. (2015) ‘Between mechanics and architecture: the quest for the rules of the art’, in Masonry Structures: Between Mechanics and Architecture, pp.1- 19, Springer International Publishing

[20] Faggiano, B., Grippa, M.R. and Calderoni, B., 2013. Non-destructive tests and bending tests on chestnut structural timber. In Advanced Materials Research (Vol. 778, pp. 167-174). Trans Tech Publications.

[21] Piazza, M.; Modena, R.; Tomasi, R.., 2005 Strutture in legno. Materiale, calcolo e progetto secondo le nuove normative europee. Hoepli Editore.

[22] De Matteis Gianfranco, Corlito Valentina, Guadagnuolo Mariateresa, Tafuro Anna. 2019. Seismic Vulnerability Assessment and Retrofitting Strategies of Italian Masonry Churches of the Alife-Caiazzo Diocese in Caserta. Int. J. Architectural Heritage – Taylor & Francis

[23] Russo Teresa,Tesi di laurea corso di laurea magistrale in architettura: Costruire con il legno oggi. X-Lam: dal processo produttivo alla sperimentazione in laboratorio. (Master's degree thesis in architecture: Building with wood today. X-Lam: from the production process to laboratory experimentation.) Università degli Studi della Campania LUIGI VANVITELLI 2017/2018 – Relatore Prof. Ing. Frunzio G.

Back to Top

Document information

Published on 30/11/21
Submitted on 30/11/21

Volume Repair and strengthening strategies and techniques, 2021
DOI: 10.23967/sahc.2021.281
Licence: CC BY-NC-SA license

Document Score


Views 3
Recommendations 0

Share this document

claim authorship

Are you one of the authors of this document?