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6 records – page 1 of 1.

Ascent - Challenges and Advances of Tall Mass Timber Construction

https://research.thinkwood.com/en/permalink/catalogue2751
Year of Publication
2020
Topic
Design and Systems
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Author
Fernandez, Alejandro
Komp, Jordan
Peronto, John
Publisher
KoreaScience
Year of Publication
2020
Country of Publication
Korea
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Topic
Design and Systems
Keywords
Tall Timber
Tall Timber Buildings
United States
Ascent
Challenges
Structural
Language
English
Research Status
Complete
Series
International Journal of High-Rise Buildings
Summary
Ascent, a 25 story residential tower located in Milwaukee, WI (USA), will become the tallest timber building in the world upon completion. This paper discusses the project's structural system, permit process, groundbreaking project specific testing, and several of the challenges the team overcame, all of which open the door to future Mass Timber projects; particularly in the United States.
Online Access
Free
Resource Link
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Highlighting the Unique Challenges and Differences of Building with Mass Timber

https://research.thinkwood.com/en/permalink/catalogue2731
Year of Publication
2020
Topic
Market and Adoption
Material
CLT (Cross-Laminated Timber)
Author
Richmond, Ryan
Publisher
California Polytechnic State University
Year of Publication
2020
Country of Publication
United States
Format
Thesis
Material
CLT (Cross-Laminated Timber)
Topic
Market and Adoption
Keywords
Construction
Research
Challenges
Language
English
Research Status
Complete
Summary
As the construction industry shifts towards sustainability and owners seek to construct buildings that are sustainable - built from natural and renewable materials, and pleasing for their occupants to work in - mass timber is becoming the popular alternative to traditional steel and concrete buildings. An abundance of information is available on mass timber products and their properties and applications, but little information on the process of actually building a mass timber project. This report seeks to extend practical knowledge on building with mass timber. In order to accomplish this, this research will highlight specific differences and challenges related to building with mass timber; create general guidelines and recommendations for contractors tasked with building a mass timber project; and identify new areas of research. Through interviews with two commercial contractors who have built mass timber projects in the California Bay Area, specific challenges have been identified. These challenges include longer project duration; increased preconstruction time and complexity; difficulties getting timely plan approvals; differing design and material procurement methods; necessity of MEP coordination at the beginning of the jobs; unique transportation, storage, and handling requirements; and different installation procedures and requirements.
Online Access
Free
Resource Link
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Identifying Mass Timber Research Priorities, Barriers to Adoption and Engineering, Procurement and Construction Challenges In Canada

https://research.thinkwood.com/en/permalink/catalogue2372
Year of Publication
2020
Topic
Market and Adoption
Application
Wood Building Systems
Author
Syed, Taha
Publisher
University of Toronto
Year of Publication
2020
Country of Publication
Canada
Format
Thesis
Application
Wood Building Systems
Topic
Market and Adoption
Keywords
Mass Timber
Barriers
Research Priorities
Challenges
Construction
Engineering
Procurement
Language
English
Research Status
Complete
Summary
Mass timber construction in Canada is in the spotlight and emerging as a sustainable building system that offers an opportunity to optimize the value of every tree harvested and to revitalize a declining forest industry, while providing climate mitigation solutions. Little research has been conducted, however, to identify the mass timber research priorities of end users, barriers to adoption and engineering, procurement and construction challenges in Canada. This study helps bridge these gaps. The study also created an interactive, three-dimensional GIS map displaying mass timber projects across North America, as an attempt to offer a helpful tool to practitioners, researchers and students, and fill a gap in existing knowledge sharing. The study findings, based on a web-based survey of mass timber end users, suggest the need for more research on (a) total project cost comparisons with concrete and steel, (b) hybrid systems and (c) mass timber building construction methods and guidelines. The most important barriers for successful adoption are (a) misconceptions about mass timber with respect to fire and building longevity, (b) high and uncertain insurance premiums, (c) higher cost of mass timber products compared to concrete and steel, and (d) resistance to changing from concrete and steel. In terms of challenges: (a) building code compliance and regulations, (b) design permits and approvals, and (c) insufficient design experts in the market are rated by study participants as the most pressing “engineering” challenge. The top procurement challenges are (a) too few manufactures and suppliers, (b) long distance transportation, and (c) supply and demand gaps. The most important construction challenges are (a) inadequate skilled workforce, (b) inadequate specialized subcontractors, and (c) excessive moisture exposure during construction.
Online Access
Free
Resource Link
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Mass Timber in High-Rise Buildings: Modular Design and Construction

https://research.thinkwood.com/en/permalink/catalogue2390
Year of Publication
2019
Topic
Design and Systems
Fire
Application
Wood Building Systems
Author
Dorrah, Dalia
Publisher
Sidewalk Labs Toronto
Year of Publication
2019
Country of Publication
Canada
Format
Report
Application
Wood Building Systems
Topic
Design and Systems
Fire
Keywords
Modularization
Fire Safety
Construction Risks
Case Study
Modular Construction
Challenges
Language
English
Research Status
Complete
Summary
The costs of mass timber may be higher, but the added premium on their prices make them economically feasible. Beyond the economics, mass timber structures present a unique opportunity to develop and test the resiliency of the owner organization and its capacity to innovate. A collective effort to strengthen the supply chain in Ontario (especially the manufacturing stage) is one of the key tools to reduce costs. Having a dedicated fire consulting firm and the early engagement of regulatory bodies and consecrators are some of the key means to control risks in this domain. Earlier projects relied on covering/insulating mass timber sections to achieve the required fire requirements. Increasingly, charring is becoming an acceptable means for fire protection. Using Integrated Project Delivery system (IPD) and Building Information Modeling (BIM) can provide the contractual and technical platforms to boost coordination and promote collaborative design and construction.
Online Access
Free
Resource Link
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A Survey on Modelling of Mass Timber Buildings

https://research.thinkwood.com/en/permalink/catalogue1916
Year of Publication
2017
Topic
Design and Systems
Application
Wood Building Systems
Author
Chen, Zhiyong
Karacabeyli, Erol
Lum, Conroy
Organization
FPInnovations
Year of Publication
2017
Country of Publication
Canada
Format
Report
Application
Wood Building Systems
Topic
Design and Systems
Keywords
Numerical Modelling
Research
Designers
Prediction
Software Tools
Empirical Equations
Design Challenges
Language
English
Research Status
Complete
Summary
A survey was conducted under the "Renessaince in Wood Construction" project that was funded by Natural Resources Canada (NRCan) under the Transformative Technologies Program to see information about numerical modelling on mass timber buildings. A questionnaire was sent to designers and researchers covering different performance attributes. The compiled information includes the available software packages and resources of empirical equations that are used by the designers and researchers for predicting the structural, fire, acoustic, and building envelope (energy and durability) performance of mass timber buildings, and the challenges that they are facing in using those tools. This report summarizes the input obtained from practicing designers and researchers who responded to this survey.
Online Access
Free
Resource Link
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Value-Driven Design Approach for Optimal Long-Span Timber-Concrete Composite Floor in Multi-Storey Wooden Residential Buildings

https://research.thinkwood.com/en/permalink/catalogue2738
Year of Publication
2020
Topic
Design and Systems
Material
Timber-Concrete Composite
Application
Floors
Author
Movaffaghi, Hamid
Pyykkö, Johan
Yitmen, Ibrahim
Publisher
Taylor&Francis Online
Year of Publication
2020
Format
Journal Article
Material
Timber-Concrete Composite
Application
Floors
Topic
Design and Systems
Keywords
Long Span Floors
TCC
Design Challenges
Mid-Rise
Residential Buildings
Multi-Family
Multi-Storey
Long Span
Serviceability
Sustainability
Language
English
Research Status
Complete
Series
Civil Engineering and Environmental Systems
Summary
Long-span timber-concrete composite (TCC) floor systems have the potential to address the design challenges for conventional wooden floors in residential multi-storey timber frame buildings. The aim of this paper is to develop a design approach for long-span timber-concrete composite floor system of 6–9 m. A framework based on value-driven design approach has been developed for integration of results from graphical multi-objective optimisation, spreadsheet-based analysis, structural static and dynamic finite element analysis, and multi-criteria decision making. To verify the developed framework, a residential five-storey timber frame building as a case study has been studied. Optimal design includes optimised thickness of the concrete and optimised smeared stiffness of connectors for three different comfort classes A to C in descending order. TCC floor with span length 7.3 [m] belonging to comfort class A and TCC floor with span length 9.0 [m] belonging to comfort class C has been chosen as optimal solutions. The results indicate that proposed and innovative design approach is a promising tool for developers, architects and structural engineers when designing optimal long-span timber-concrete composite floor system.
Online Access
Free
Resource Link
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6 records – page 1 of 1.