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Finite Element Analysis of Glulam Beams with Transverse and Longitudinal Notches
https://www.proceedings.com/069179-0356.html... [Connectors] [Conference Paper] 2023 S. Malek, A. Goodarzi, R. Parra, P. Khoshkbari Laminated wood composites, such as glued-laminated timber (Glulam) and cross-laminated Timber (CLT), are increasingly being used in the design of mass timber buildings. In solid timber (sawn lumber) and engineered wood products (EWPs), transverse notches are generally used at connections or at supports to reduce the height of beams. Small longitudinal notches may also be cut along beams and columns for aesthetic purposes. It is known that abrupt cross-section changes create stress concentrations... |
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Cyclic model of post-tensioned low damage timber walls with dissipative devices
https://www.sciencedirect.com/science/article/pii/... [Seismic Performance] [Journal Article] 2023 V. Tomei, M. Zucconi, B. Ferracuti Post-tensioned rocking dissipative timber wall systems born from the idea to obtain structural solutions able to guarantee, after a seismic event, a rapid re-use of the buildings without permanent damage, as well as to guarantee the safeguarding of human life. In this framework, the rocking of timber walls is entrusted to post-tensioned bars, placed in ad hoc cavities of the panel, while the dissipative contribution is provided by steel dampers, which are sacrificial elements subjected to damage... |
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Lateral load capacity of WikiHouse composite walls from CNC cut timber panels
https://engrxiv.org/preprint/view/2266... [Mechanical Performance] [Report] 2022 G. Granello, T. Reynolds, R. Taleb, C. Prest Computer-numerical-control (CNC) fabrication of interlocking-plate timber structures is a novel construction method that allows to build structural elements without mechanical fasteners: the load transfer mainly relies on direct contact and friction between the composing panels. In this work, the lateral load capacity of shear walls formed from interlocking CNC cut plywood elements is investigated by means of experimental testing and analytical modelling.... |
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A Zero-carbon Bio-based Wall Panel as an Energy Retrofit Solution for Buildings
https://www.researchgate.net/publication/359503135... [Moisture/Durability] [Conference Paper] 2022 S. Kurzinski, P.L. Crovella, M.A. Razkenari, W.B. Smith The long-term goals of this study are to develop a bio-based retrofit panel system which is optimally sized, efficient for installation, with net-zero embodied carbon and a low-cost installation process, fabricated from a low-density wood-based substrate of three-ply Crosslaminated Timber (CLT) technology supporting the bio-based insulation. The paper analyzes the potential for mold growth of the proposed panel with three different R values of 10, 20 and 30 using hygrothermal modeling tools WUFI... |
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Engineered Wood Products for Construction
https://www.intechopen.com/chapters/80719... [Commercial/Company Information] [Book/Book Section] 2022 Hüseyin Emre Ilgın, Markku Karjalainen, Olli-Paavo Koponen, Anu Soikkeli Construction work is very resource-intensive, and construction projects contain many parameters, in which the choice of building material is one of the critical decisions with numerous criteria, e.g., cost, durability, and environmental impact. Moreover, this complex process includes different parties such as contractors, architects, engineers, where contractors are the most influential decision-makers in material selection. Increasing the use of renewable materials such as wood, which is a tech... |
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Review of the charring rates of different timber species
https://onlinelibrary.wiley.com/doi/10.1002/fam.31... [Fire Performance] [Journal Article] 2023 Julie Liu, Erica C. Fischer During a fire, the load-carrying cross section of timber members will reduce due to charring. This article summarizes experimental investigations into the charring rate of different timber species under standard fire conditions, identifies material properties that contribute to the variations of char rates across the different species, and evaluates the applicability of prescribed charring rates to solid timber, cross-laminated timber (CLT), and glulam exposed to standard fires.... |
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Fire performance of timer-concrete composite floor systems utilizing cross-laminated timber panels with self-tapping screws as shear connectors
https://knowledgecommons.lakeheadu.ca/handle/2453/... [Fire Performance] [Thesis/Dissertation] 2023 Sarah Barclay One of the main reasons that hinder more utilization of combustible material, such as wood, as the primary construction material in tall buildings is the required duration a structure must withstand applied loads under fire exposure without losing its structural integrity, which is refereed to the fire resistance rating required by applicable building codes. However, the increased availability of cross-laminated timber (CLT) sections in Canada and its successful use in mass timber construction h... |
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Strength of connection profiles used in cross-laminated timber walls under seismic load
https://www.goldenlightpublish.com/dosyalar/baski/... [Connectors] [other] Gulten Tandogan Kibar, Esra Lakot Alemdag, null, Cross-laminated wood (CLT) material, which has many advantages, has been widely used in architectural designs as a building element and building material in recent years. It has been proven that CLT can also show high performance against ground vibrations, but it is also mentioned in the literature that some problems such as rupture, snagging, and breaking occur in the elements used in the connections of the walls to the floor and the ground. This study was conducted to examine the performance o... |
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Ahsap-Yapi-Sektor-Raporu-2.pdf,
http://www.ahsap.org/assets/pdfDocs/etkinlik-2/Ahs... [Moisture/Durability] [other] ... |
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Strength of connection profiles used in cross-laminated timber walls under seismic load
https://search.trdizin.gov.tr/tr/yayin/detay/11614... [Seismic Performance] [Journal Article] 2023 Gulten TANDOĞAN KİBAR, Esra LAKOT ALEMDAĞ Cross-laminated wood (CLT) material, which has many advantages, has been widely used in architectural designs as a building element and building material in recent years. It has been proven that CLT can also show high performance against ground vibrations, but it is also mentioned in the literature that some problems such as rupture, snagging, and breaking occur in the elements used in the connections of the walls to the floor and the ground. This study was conducted to examine the performance o... |
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Parametric analysis of the effective flange width of mass timber composite floor panels
https://www.sciencedirect.com/science/article/abs/... [Mechanical Performance] [Journal Article] 2023 T. Hull, D. Lacroix Mass timber composites (MTCs), where the webs are typically spaced 750–2000 mm apart, have shown potential in overcoming span limitations of conventional flat slab mass timber floors. However, fundamental research investigating the non-linear stress distribution (i.e., shear lag) in the flanges is required. While this behaviour has been simplified in design for other materials using the concept of an effective flange width (EFW), no guidance exists in international design codes for mass timber c... |
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CASE STUDY OF 3-PLY COMMERCIAL SOUTHERN PINE CLT MECHANICAL PROPERTIES AND DESIGN VALUES
https://wfs.swst.org/index.php/wfs/article/view/31... [Mechanical Performance] [Book/Book Section] 2022 L.M. Spinelli Correa, R. Shmulsky, F.J.N. França This work elucidates on a case study of industrially manufactured cross-laminated timber (CLT). Two methods are used to calculate specimens section modulus, Sgross and Seffective. The first assumes that specimens behave as a continuous material, while the second considers the cross laminations (shear analogy method). Although the shear analogy method is indicated for construction purposes, applications as such as trench shoring, matting, and work platforms could benefit from a simpler calculati... |
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Building Towards the Future of Canada’s Sustainable Forests
https://repository.library.carleton.ca/concern/etd... [Raw Materials] [Thesis/Dissertation] 2022 A. Tang This thesis will address the long-term goals of forest management and development towards sustaining the forests in Chibougamau, Quebec. As the Canadian economy continues to supply and produce lumber, this thesis seeks to use architectural methods to promote a robust approach that aids in the facilitation of tree growth research and forestry production for commercial, large-scale economies, and to protect forest health. The design proposal is for a tree nursery and a forestry research center to ... |
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Evaluating the Suitability of Salvaged Lumber as Feedstock in Cross-Laminated Timber
https://d.lib.msu.edu/etd/50371... [Raw Materials] [Thesis/Dissertation] 2022 A.A. Azeez This research focuses on promoting deconstruction, obtaining the salvaged lumber from deconstructed abandoned buildings, and evaluating the possibility of reusing it to make way for a secondary means of lumber production. The study evaluates the engineering properties of salvaged lumber. Furthermore, the salvaged lumber is partially used to manufacture Cross Laminated Timber (CLT) per the current standards and its properties are compared against the properties of CLT panels exclusively made of f... |
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Enhancing the performance of dowel type fasteners and a case study of timber truss failure
https://scholarsjunction.msstate.edu/td/5505/?utm_... [Case Study/Projects] [Thesis/Dissertation] 2022 L.A. Yeary As a building material, cross laminated timber (CLT) has exponentially grown in popularity recently. Although performing superior to numerous other popular building materials, a consistent issue presented in wood construction is the effect of moisture on performance. This study looks to investigate the effect of moisture content on the performance of a 2-way dowel type fastener system loaded in shear perpendicular to the major strength axis. It was found that the peak load capacity of the specim... |
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A Data-Driven Workflow for Modelling Self-Shaping Wood Bilayer
https://www.researchgate.net/publication/360223410... [Mechanical Performance] [Conference Paper] 2022 Zuardin Akbar, Dylan Wood, Laura Kiesewetter, Achim Menges This paper develops a workflow to train machine learning (ML) models with a small dataset from physical samples to predict the curvatures of self-shaping wood bilayers based on local variations in the grain. In contrast to state-of-the-art predictive models, specifically 1.) a 2D Timoshenko model and 2.) a 3D numerical model with a rheological model, our method accounts for natural and unavoidable material variations. In this paper, we only focus on local grain variations as the main driver for ... |
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Properties of Cross-Laminated Timber Panel with Low-Value Lumber and Performance of Cross-Laminated Timber Wall System Subjected to Seismic and Sequential Seismic-Wind Loadings
https://digitalcommons.mtu.edu/etdr/1380/... [Raw Materials] [Thesis/Dissertation] 2022 Yunxiang Ma The study of mechanical properties of the CLT panels made with low-value sugar maple and salvaged spruce can promote the utilization of the low-value lumber and promote forest management. The developed panel model provided an approach to estimate the CLT mechanical properties based on the nondestructive lamination test result, which can be a tool for future layup design. ... |
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Construction Productivity Comparison Between Cast-in-Place Concrete and Mass-Timber Framing: A Case Study of the Nation’s Largest Mass-Timber Building
https://easychair.org/publications/open/LWX1... [Case Study/Projects] [Conference Paper] 2022 Anthony Mirando, Lameck Onsarigo One main barrier to the proliferation of sustainable mass-timber structures across the United States, is construction and development teams' unfamiliarity with scheduling and efficiently managing the construction of mass-timber structural system. A comprehensive understanding of the schedule associated with the construction of mass-timber versus typical concrete structures provides important data metrics for teams deciding on utilizing this material and method. This study compares simulated manp... |
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Mass Timber: A Review of Typologies and Environmental Benefits
https://link.springer.com/chapter/10.1007/978-981-... [General Information] [Journal Article] 2022 A. Gray, A. Sadoughi Mass timber has quickly risen in global popularity as a sustainable building material that shortens building processes, provides a high level of prefabrication and modularity, enhances aesthetic quality, and lessens environmental impact. Most notably, cross-laminated timber’s structure of orthogonal layers of laminate allows panels to span great distances and provide significant structure, allowing much taller wood buildings than traditional wood structures. Furthermore, the high level of prefab... |
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