Cross-Laminated Timber Floors With Openings - Serviceability Limit State Verifications

Abstract

This paper contributes information about the influence of openings in cross laminated timber (CLT) floors in serviceability limit state (SLS) design. SLS verifications according to the European structural design standard for timber structures -Eurocode 5 -comprise functionality, appearance and the user's comfort. The verifications are based on deformation and vibration criteria. The investigation presented describes the influence of openings on the basis of experimental and theoretical investigations. Rectangular centralized openings in CLT elements were tested. The experimental results were used for the calibration of the numerical models used for theoretical investigations. The numerical models were geometrically parameterized. Towards application for practice, modification factors were derived to enable determination of the respective deformation and first natural frequency.

Innocrosslam - Adding Knowledge Towards Increased Use of Cross Laminated Timber (Clt)

“…The work has covered studies to gain in-depth and basic knowledge of the mechanical behaviour of CLT, including joints and moisture related behaviour. Furthermore, the work has addressed more applied 1 Boris Azinović & Tomaž Pazlar, Slovenian National Building and Civil Engineering Institute (ZAG Ljubljana), Slovenia, boris.azinovic@zag.si & tomaz.pazlar@zag.si 2 Erik Serrano & Henrik Danielsson, Lund University, Sweden, erik.serrano@construction.lth.se & henrik.danielsson@construction.lth.se 3 Josef Füssl & Markus Lukacevic, Technical University of Vienna (TUW), Austria, josef.fuessl@tuwien.ac.at & markus.lukacevic@tuwien.ac.at research by including investigations on prototypes of innovative concepts related to CLT with embedded functionality in terms of heating and ventilation (known as thermal activation). Finally, the project InnoCrossLam has aimed at proposing practical design approaches and formulae, for inclusion in future structural codes and standards.…”

“…In addition, other complementing engineering tools such as handbooks are fragmented, national and, as a result, there is a risk of such documents leading to diverging recommendations. Finally, several common design situations are not covered [1].…”