Towards a mass timber agenda: The local and regional viability of mass timber in Miami-Dade County
https://www.taylorfrancis.com/chapters/edit/10.120... [Markets] [Book/Book Section] 2022
C. Meyer, S. Meyer
The paper Towards a Mass Timber Agenda examines the potential of the southern yellow pine (SYP) forests to produce viable solid wood building material and the capacity to implement these materials in Miami-Dade County (MDC). To better frame the project, it is positioned within a broader need of architectural speculation that questions accepted [and practiced] proclivities of the built environment and their surrounding ecologies. The project challenges the agency of architecture and provokes us t...

Timber-Glass Curtain Wall
https://repository.tudelft.nl/islandora/object/uui... [Alternative/Hybrid Configurations] [Thesis/Dissertation] 2022
Mariana Georgoulopoulou
The present research investigates the potential of timber-glass composites in unitized curtain wall façade applications. Hybrid aluminum-timber curtain walls and timber-glass composites are explored, while specific design criteria, timber and adhesive limitations and unique material properties are defined. A geometry study is conducted though the evaluation of a case study, an under-development hybrid unitized profile by RAICO. Design for disassembly method is applied and a unitized profile is d...

Fiber reinforced timber: Designing structural beams for sustainable buildings with enhanced load-bearing capacity
https://www.taylorfrancis.com/chapters/edit/10.120... [Alternative/Hybrid Configurations] [Thesis/Dissertation] 2022
M. Budig, D.S. Mlote
Since a large portion of Greenhouse Gas (GHG) emissions is contributed by construction activities, the reduction of embodied carbon and the impact of respective material choices has received increasing attention. Its potentially low Embodied Carbon (EC) and technological innovations in the past couple of decades have led to a reconsideration of timber as construction material and have turned it into as serious contender compared to concrete and steel. A lack of adequate structural capacity had p...

Structures and Architecture: A Viable Urban Perspective?
https://www.taylorfrancis.com/books/edit/10.1201/9... [General Information] [Book/Book Section] 2022
Marie Frier Hvejsel, Paulo J.S. Cruz
The contributions on creative and scientific aspects in the conception and construction of structures as architecture, and on the role of advanced digital-, industrial- and craft -based technologies in this matter represent a critical blend of scientific, technical, and practical novelties in both fields. Hence, as part of the proceedings series Structures and Architecture, the volume adds to a continuous exploration and development of the synergetic potentials of the fields of Structures and Ar...

Repair and Reinstatement of Douglas-fir CLT Hold-down Connections using Mixed Angle Self Tapping Screws
https://www.researchgate.net/publication/361183418... [Connectors] [Conference Paper] 2022
T.D.W. Wright, Minghao Li, Mikhail Gedyma, Hyungsuk Lim
This paper experimentally evaluates cyclic performance of mixed angle screwed hold-downs that are not only easy to implement, but also easy to repair post-earthquake. These connections utilise a mixture of screws installed at an inclined angle and 90-degree to the timber surface. The inclined screws are able to provide high connection strength and stiffness while the 90-degree screws mainly contribute to connection ductility and energy dissipation. Previous research on timber connections using m...

An innovative construction system made from local Mediterranean natural resources
https://www.researchgate.net/publication/360993146... [Raw Materials] [Conference Paper] 2022
Pau Brunet-Navarro, Eva Hermoso, Mariola Sánchez-González, Emilio Luengo, Salvador Gilabert Sanz, Melchor Monleón Doménech, Zaratiana Mandrara, Jean-Denis Lanvin, Jorge Gominho, José Oliver Villanueva
This article presents an ecological construction system based on natural biological materials to improve energy efficiency in public buildings. This system consists of interconnected panels made of indigenous biological resources. Its design facilitates the assembly and disassembly for reuse, extending service life and reducing the costs of demolition energy and waste....

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...

Development of OpenStudio model for CLT hotel
https://repository.mines.edu/handle/11124/15854... [Design/Architectural aspects] [Others] 2022
Caroline M. Obluda, Paulo Cesar Tabares-Velasco
Cross-laminated timber (CLT), a type of mass timber in which wood is secured in alternating directions, has emerged as an sustainable alternative to concrete or steel with a significantly lower carbon footprint. However, CLT properties depend on its moisture content and most building energy tools do not account for moisture transfer in building envelopes. This study develops a building energy modeling in OpenStudio for a hotel in Fort Jackson, North Carolina, that utilizes CLT to compare against...

Challenges Facing the Development and Market Introduction of Hardwood Cross-Laminated Timbers
https://login.ezp2.lib.umn.edu/login?qurl=https://... [Raw Materials] [Journal Article] 2022
Curt Hassler, Joseph F. McNeel, Levente Denes, Jonathan Norris, Balasz Bencsik
The interest in softwood-based cross-laminated timber (CLT) production has in turn generated a great deal of interest in producing CLT from hardwood species. This prospect of a new market for hardwood lumber is a significant driver behind efforts to gain certification of hardwoods within American Panel Association (APA) PRG 320, Standard for Performance- Rated Cross-Laminated Timber. However, a number of challenges present significant hurdles for gaining acceptance of hardwoods in CLT manufactur...

Aligning the wood grain to the flow of forces: A review of the whole process from design to production only using wood.
https://repository.tudelft.nl/islandora/object/uui... [Mechanical Performance] [Thesis/Dissertation] 2022
F. Lopez
Nowadays it is well known and documented that climate change is irreversible and must be tackled with more considerable emphasis. One of the main actions to be done is reducing CO2 emissions (IPCC, 2021). The building and construction industry is one of the most significant contributors to CO2 worldwide emissions (United Nations Environment Programme, 2021). Therefore, due to its more sustainable condition than typical steel and concrete buildings (Liang et al., 2020), wood as a building materia...

PERFORMANCE OF A GROUT-REINFORCED HYBRID STEEL-TIMBER SHEAR CONNECTION FOR MASS TIMBER BUILDINGS
https://www.researchgate.net/publication/350102646... [Alternative/Hybrid Configurations] [Conference Paper] 2021
Samuel Shulman, Cristiano Loss
Mass timber has proven to be a sustainable alternative to steel and concrete and its use in construction has increased significantly in the last decade. With building codes relaxing height limitations, there is a need for novel connection solutions for the next generation of tall timber buildings. There is also a need to ensure that mass timber products are being used responsibly and sustainably, with deconstruction and reuse being identified as important factors in this pursuit. This paper pres...

Sustainable Timber Bridge Design with Design-to-Build Workflow Involving Human-Robot Collaboration (HRC)
https://repository.tudelft.nl/islandora/object/uui... [Design/Architectural aspects] [Thesis/Dissertation] 2022
JUN Loo
Therefore the focus of this thesis aims to develop meaningful and productive Design-to-Build workflow involving HRC in the construction process of a timber bridge structure in Buiksloterham, Amsterdam.This site is thus chosen for this thesis project because of the alignment of the municipality’s aim for circular construction and materials with the thesis’s exploration of timber bridge structures. Furthermore, with a main span of 38m and use as a pedestrian and cyclist bridge, this sets manageabl...

Structural Performance of Mass Timber Panel-Concrete Composite Floors with Notched Connections
https://era.library.ualberta.ca/items/fe31b6e2-dbc... [Connectors] [Thesis/Dissertation] 2022
L. Zhang
To study the structural performance of notched connections and notch-connected composite floors, this thesis presented experimental, numerical, and analytical investigations. Push-out tests were conducted on the notched connections first, and then bending tests and vibration tests were conducted on full-scale composite floors. Finite element models were built for the notched connections to derive the connection shear stiffness. Finally, analytical solutions were developed to predict the internal...

Building SimpliCity: Bringing affordable housing back to the people
https://repository.tudelft.nl/islandora/object/uui... [Environmental Performance] [Thesis/Dissertation] 2022
R. Agerbeek
This research investigates how the notion of low-tech timber construction can contribute to improving the affordability of housing. For this, the two main aspects of affordability and the degree of low-tech have been investigated and made measurable by means of parameters. First of all, by creating a housing cooperative, housing remains accessible to people with low and middle incomes. The amount to be financed and the incentives for the governmental agencies to finance a project can be influenc...

Time for timber: A research on policy instruments for a successful timber transition in the Metropole region of Amsterdam
https://repository.tudelft.nl/islandora/object/uui... [Case Study/Projects] [Thesis/Dissertation] 2022
Josefien de Wind
The Paris Agreement set goals to minimize global warming by reducing CO2 emissions. In the Netherlands, the Paris Agreement is translated into policies that aim for circularity and sustainability at different governmental levels. These policies are directed at the sustainability transitions within different fields, such as the built environment. The construction sector is responsible for high levels of CO2 emissions, however, there is a big housing shortage in the Netherlands and the aim is to c...

Global Mass Timber Panel (MTP) Industry During the COVID-19 Pandemic: Initial Findings
https://www.researchgate.net/publication/361598750... [Markets] [Conference Paper] 2022
P. Larasatie, L. Muszyński, E. Hansen
For nearly two years, the COVID-19 pandemic has continued to affect global economies in various ways. It has been disrupting supply/value chains of manufacturers in all sectors, and the mass timber panel industry has not been an exception. However, the exact extent of the impact is difficult to measure by conventional means because the mass timber panel industry is specialty oriented and does not follow a commodity model of other forest products sectors.The objective of presented project was to ...

NHERI TallWood 10-story Test Nonstructural, Part 1 of 4: Project Overview and Curtain Wall Subassembly
https://par.nsf.gov/biblio/10348727... [Seismic Performance] [Conference Paper] 2022
S. Wynn, K.L. Ryan, W. Roser, Y. Ji, S. Sorosh
As the market for mass timber buildings have been growing in the US due to the need for more sustainable building designs, more research is required for tall mass timber buildings in high seismic regions. A 10-story mass timber building with both structural and non-structural components will be tested on the University of California San Diego (UCSD) large scale shake table to investigate the behavior and resilience of the building components. One of the key nonstructural systems included in the ...

NHERI TallWood 10-story Test Nonstructural, Part 4 of 4: Prefabricated Steel Stair Subassemblies
https://par.nsf.gov/biblio/10348730... [Seismic Performance] [Conference Paper] 2022
S. Sorosh, T.C. Hutchinson, K.L. Ryan
During extreme events such as earthquake and fire, safe egress in and out of a building is crucial. To design seismic resilient egress systems, understanding the earthquake response of these systems is required. Previous earthquakes and physical experiments have proven that stairs with fixed connections are prone to damage and might even impact the dynamic characteristics of the supporting structure. To address this, resilient stair systems have been proposed, most suitably with drift ready con...

Study of the hygroscopic properties of three Australian wood species used as solid wood and composite products
https://link.springer.com/article/10.1007/s00107-0... [Moisture/Durability] [Journal Article] 2023
Maryam Shirmohammadi
The use of engineered wood products and mass timber panels such as cross laminated timber (CLT), glued laminated timber (glulam) and laminated veneer lumber (LVL) is becoming more common, as these products have benefits in terms of environmental credentials and resource utilisation and have the potential to provide faster and more economical construction processes. However, timber exposed to moisture for prolonged periods can degrade biologically, leading to a loss of appearance and decreased me...

Mechanical Properties of Hybrid Softwood & Hardwood Cross-Laminated Timbers
https://vtechworks.lib.vt.edu/bitstream/handle/109... [Mechanical Performance] [Thesis/Dissertation] 2023
Esra Satir
This study presents the results from testing of three-layer and five-layer CLTs manufactured using yellow-poplar (Liriodendron tulipifera) as hardwood and southern pine (Pinus spp.) as softwood in different layers, defined as hybrid CLT. The purpose of this project was to compare the bending and shear properties in the major axis direction of hybrid CLT panels obtained from five-point, four-point, and three-point bending tests with the current ANSI/APA PRG-320 values, and also to evaluate their ...