Characterization of rolling-shear creep for cross laminated timber panels
https://hal-enpc.archives-ouvertes.fr/hal-03605620... [Mechanical Performance] [Conference Paper] 2022
Charlotte Allemand, Arthur Lebée, Nicolas Pinoteau, Gilles Forêt
This article presents an experiment to characterize the rolling shear modulus Gr,mean of CLT panels and its creep. A four-point bending test is achieved on sandwich beams with skins and wooden core. This allows to isolate the CLT cross-layer and to characterize the shear behaviour. The experiment is performed in a constant environment during 6 months. ...

Characterization of rolling-shear creep for cross laminated timber panels CHARACTERIZATION OF ROLLING-SHEAR CREEP FOR CROSS LAMINATED TIMBER PANELS KEYWORDS
https://hal-enpc.archives-ouvertes.fr/hal-03605620... [Connectors] [other]
Charlotte Allemand, Arthur Lebée, Nicolas Pinoteau, Gilles Forêt, Charlotte Allemand, Arthur Lebée, Nicolas Pinoteau, Gilles Forêt
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Experimental investigation and numerical modeling of rocking cross laminated timber walls on a flexible foundation
https://login.ezp1.lib.umn.edu/login?qurl=https://... [Seismic Performance] [Journal Article] 2022
Sarah Wichman, Jeffrey W Berman, Shiling Pei
This paper presents a numerical modeling procedure for mass timber rocking wall lateral system with distributed spring elements to model base rocking. This modeling technique was validated by comparing the behavior with results from the full-scale two-story shake table test on a mass timber building with coupled CLT rocking walls completed as part of the NHERI TallWood Project....

Advanced Timber Construction Industry: A Review of 350 Multi-Storey Timber Projects from 2000–2021
https://www.mdpi.com/2075-5309/12/4/404... [Tall Buildings] [Journal Article] 2022
H. Svatoš-Ražnjević, L. Orozco, A. Menges
This paper presents an examination of architectural variety and spatial possibilities in current serial and modular multi-storey timber construction. It aims to draw a parallel between architectural characteristics and their relation to structural systems in timber. The research draws from a collection of 350 contemporary multi-storey timber building projects between 2000 and 2021....

Modular multi-storey construction with cross-laminated timber: Life cycle environmental implications
https://www.tandfonline.com/doi/pdf/10.1080/174802... [Environmental Performance] [Journal Article] 2022
A. Al-Najjar, A. Dodoo
In this study, the life cycle environmental implications of modular multi-storey building with crosslaminated timber (CLT) volumetric elements are analysed, considering the product, construction, service life, end-of-life and post-use stages. A bottom-up attributional approach is used to analyse the environmental flows linked to the global warming potential (GWP), acidification potential (AP) and eutrophication potential (EP) impacts of the building for a 50-year reference study period. ...

Method of Calculation for Walls of Vertical Squared Timber
http://aej.spbgasu.ru/index.php/AE/article/view/54... [Mechanical Performance] [Journal Article] 2022
O. Tretiakova
The purpose of this study was to formulate a calculation method for walls out of vertical squared timber, based on the available traditional approaches to wooden structures. We propose a calculation method for walls out of vertical squared timber as a set of elements resisting compression with bending, including a check for limiting slenderness....

Life Cycle Environmental Sustainability and Energy Assessment of Timber Wall Construction: A Comprehensive Overview
https://www.mdpi.com/2071-1050/14/7/4161... [Environmental Performance] [Journal Article] 2022
R. Sultana, A. Rashedi, T. Khanam, B. Jeong
This article presents a comprehensive overview of the life cycle environmental and energy assessment for all residential and commercial constructions made of timber walls, globally. The study was carried out based on a systematic literature analysis conducted on the Scopus database. A total of 66 research articles were relevant to timber wall design....

Improved adhesive-bond performance in copper azole and disodium octaborate tetrahydrate-treated Eucalyptus grandis laminates
https://www.tandfonline.com/doi/abs/10.1080/204264... [Raw Materials] [Journal Article] 2022
A.A. Alade, C.B. Wessels, H. Stolze, H. Militz
The prospect of manufacturing durable structural laminated wood with copper and boron-based preservative-impregnated Eucalyptus grandis wood was previously investigated but revealed adhesive-bond performance below standard requirements. In this study, bonding process factors, viz. mechanical pretreatment (surface planing) and bonding pressure in conjunction with wood preservative and adhesive compatibility for improved bond performance in preservative-treated E. grandis laminates were investigat...

Multi-objective optimization of cross laminated timber-concrete composite floor using NSGA-II
https://www.sciencedirect.com/science/article/abs/... [Connectors] [Journal Article] 2022
M. Van Thai, P. Galimard, S.M. Elachachi, S. Ménard
Cross-laminated timber (CLT) is an engineered wood product made of multiple glued layers in the form of a panel suitable for flooring systems. CLT can also be mechanically connected to the concrete layer using the connector systems to create a CLT-concrete composite (CCC). This concept enhanced the structural performance of the floor and could be adopted for mid-and high-rise buildings. However, the design of the CCC floor involves the optimization of multiple structural and non-structural eleme...

Development of high-performance timber-concrete composite floors with reinforced notched connections
https://www.sciencedirect.com/science/article/abs/... [Connectors] [Journal Article] 2022
L. Zhang, J. Zhou, Y.H. Chui
This study presented a novel and efficient reinforcing solution in the notched connections to strengthen the concrete and restrict the crack opening in concrete. Three mass timber panel-concrete composite floors with different levels of reinforcement in the notched connections were fabricated and tested under four-point bending to examine the efficiency of the reinforced notched connections....

Predicting the Average Compression Strength of CLT by Using the Average Density or Compressive Strength of Lamina
https://www.mdpi.com/1999-4907/13/4/591... [Mechanical Performance] [Journal Article] 2022
Z. Tian, Y. Gong, J. Xu, M. Li, Z. Wang, H. Ren
The compressive strength in the major direction of cross-laminated timber CLT is the key to supporting the building load when CLT is used as load-bearing walls in high-rise wood structures. This study mainly aims to present a model for predicting the average compressive strength of CLT and promoting the utilization of CLT made out of planted larch....

Contemporary tall residential timber buildings: what are the main architectural and structural design considerations?
https://www.emerald.com/insight/content/doi/10.110... [Tall Buildings] [Journal Article] 2022
H.E. Ilgın, M. Karjalainen, S. Pelsmakers
This study examined data from 13 international tall residential timber building case studies to increase our understanding of the emerging global trends....

MCB-Pension-Chair-Statement-2019.pdf
https://www.emeraldgrouppublishing.com/sites/defau... [Markets] [other]

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Emerald-covid-19-policy.pdf
https://www.emeraldgrouppublishing.com/sites/defau... [Vibration/Acoustic Performance] [other]

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Cross-laminated timber for building construction: A life-cycle-assessment overview
https://www.sciencedirect.com/science/article/pii/... [Environmental Performance] [Journal Article] 2022
A. Younis, A. Dodoo
Cross-laminated timber (CLT) has emerged as an innovative alternative material to steel/concrete in building construction, given its relatively low carbon footprint, not to mention its high strength-to-weight ratio, simple installation, and aesthetic features. Furthermore, the paper explores the challenges associated with conducting LCA on CLT buildings, identifies the gaps in knowledge, and outlines directions for future research....

Block tear-out resistance of CLT panels with single large-diameter connectors
https://link.springer.com/article/10.1007/s00107-0... [Connectors] [Journal Article] 2022
H. Asgari, T. Tannert, C. Loss
Novel solutions with large-diameter connectors for cross-laminated timber (CLT) assemblies require wood brittle failure to be avoided through capacity-design-based provisions to protect the CLT panels. Current design standards, such as the Canadian Standard for Engineering Design in Wood (CSA-O86), do not cover the block tear-out resistance of CLT panels associated with large-diameter connectors. The primary objective of the research presented herein was to assess the block tear-out and net-sect...

Seismic performance evaluation of innovative balloon type CLT rocking shear walls
https://www.sciencedirect.com/science/article/pii/... [Seismic Performance] [Journal Article] 2022
T.Y. Yang, S. Lepine-Lacroix, J.A.R. Guerrero
Balloon type cross laminated timber (CLT) rocking shear walls are a novel seismic force resisting system. In this paper, the seismic performance of four 12-story balloon type CLT rocking shear walls, designed by a structural engineering firm located in Vancouver (Canada) using the performance-based design procedure outlined in the technical guideline published by the Canadian Construction Materials center (CCMC)/National Research Council Canada (NRC), is assessed. The seismic performance of the ...

Bending Performance of Timber-Timber Composite Floors
https://link.springer.com/chapter/10.1007/978-981-... [Mechanical Performance] [Journal Article] 2022
M. Shahnewaz, C. Dickof, T. Tannert
Experimental investigations on Timber-Timber Composite (TTC) floor systems composed of Cross-Laminated Timber (CLT)-glulam are presented in this paper. The floor system was designed as part of two projects in Vancouver, the Sir Matthew Begbie Elementary School and the Bayview Elementary School. Quasi-static monotonic tests were conducted on full-scale 9.1 m long and 1.2 m wide double T-shaped ribbed composite floor segments. ...

Innovations in mass timber lateral systems
https://krex.k-state.edu/bitstream/handle/2097/421... [Seismic Performance] [Thesis/Dissertation] 2022
D. Bailey
As mass timber becomes increasingly popular in the United States and around the world, there comes more demand for mass timber in larger buildings. With this demand comes a necessity for these buildings to be able to withstand seismic forces; and in some locations, these forces can get quite high. This report seeks to present these innovative, capable, and effective lateral systems for seismic forces in large scale mass timber structures in a manner that provides understanding of how they work a...

Shear Stiffness of Cross Laminated Timber Diaphragms
https://www.byggmek.lth.se/fileadmin/byggnadsmekan... [Mechanical Performance] [Thesis/Dissertation] 2022
G. Olausson
By utilizing timber in buildings, the amount of greenhouse gases emitted in production decreases compared to other common materials. The increase in timber buildings is partly due to the implementation of Cross Laminated Timber (CLT) during the late 20th century. In this work, analytical and numerical modeling and calculations are performed. The shear stiffness for the different types of connections studied is determined, which includes assumptions of inclination angle, screw type, length and d...