Construction of All-Wood Trusses with Plywood Nodes and Wooden Pegs: A Strategy towards Resource-Efficient Timber Construction

Timber truss systems are very efficient load-bearing structures. They allow for great freedom in design and are characterised by high material use in combination with a low environmental impact. Unfortunately, the extensive effort in design and production have made the manufacturing and application of these structures, in this day and age, a rarity. In addition, the currently mainly used steel gusset plates adversely affect the costs and environmental impact of the trusses. The authors’ goals are to optimise the design of timber trusses and to solely use wood for all building components. The two research areas, (1) optimisation of the truss geometry and (2) optimisation of the joints by using solely wood–wood connections, are addressed in this paper. The numerical optimisation strategy is based on a parametric design of the truss and the use of a genetic solver for the optimisation regarding minimal material consumption. Furthermore, first results of the tensile and compression behaviour of the chosen wood–wood connections are presented. The basic idea for the joints is to use a plywood plate as a connector, which is inserted into the truss members and fixed with wooden pegs. The housing of the new robot laboratory located at BOKU Vienna is considered a special case study for the research and serves as an accompanying example for the application of the research within the present paper.

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Supporting the Reuse of Design Assets in ETO-Based Components—A Case Study from an Industrialised Post and Beam Building System

Buildings ◽

10.3390/buildings12010070 ◽

2022 ◽

Vol 12 (1) ◽

pp. 70

Author(s):

Shamnath Thajudeen ◽

Fredrik Elgh ◽

Martin Lennartsson

Keyword(s):

Parametric Design ◽

Single Case ◽

Parametric Modelling ◽

Building Components ◽

Building System ◽

Engineer To Order ◽

External Efficiency ◽

House Building ◽

Modelling Process

The ability to offer customisation has been considered as a competitive advantage for industrialised house building (IHB) companies. Product platform approaches have been acknowledged as one of the prominent ways to improve both internal and external efficiency. However, the use of traditional platform-based strategies does not suffice for the design of engineer-to-order (ETO)-based components in a building system. The purpose of this research is to test and evaluate how the reuse of design assets can be achieved by using a parametric modelling approach to support the design process of ETO-based components in a post and beam building system. This is an additional study using the design platform approach (DPA) that contributes to expanding the knowledge for designing ETO-based components. This research proposes a parametric design platform method developed by following an inductive approach based on the findings from a detailed study on bracket connection with a single case study in a Swedish multi-storey house building company. The proposed method offers flexibility in modelling ETO building components, facilitates design automation, and shows a 20-times improvement in the modelling process. This approach can be used in any building system with ETO-based components by identifying, formalising, and reusing connected design assets. A key finding is that the ETO components can be shifted towards configurable solutions to achieve platform-based design.

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Life cycle assessment and data envelopment analysis approach for the selection of building components according to their environmental impact efficiency: a case study for external walls

Journal of Cleaner Production ◽

10.1016/j.jclepro.2014.10.073 ◽

2015 ◽

Vol 87 ◽

pp. 707-716 ◽

Cited By ~ 34

Author(s):

Diego Iribarren ◽

Antonino Marvuglia ◽

Paula Hild ◽

Mélanie Guiton ◽

Emil Popovici ◽

...

Keyword(s):

Life Cycle Assessment ◽

Life Cycle ◽

Data Envelopment Analysis ◽

Environmental Impact ◽

Analysis Approach ◽

Data Envelopment ◽

Building Components ◽

Selection Of

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Nonwovens: Global Trends in World Economy, European Foreign Trade, and Selected Case Studies from Poland and Asian Brics Countries

Autex Research Journal ◽

10.2478/aut-2020-0028 ◽

2020 ◽

Vol 0 (0) ◽

Author(s):

Zofia Wysokińska ◽

Tomasz Czajkowski ◽

Katarzyna Grabowska

Keyword(s):

Case Studies ◽

World Economy ◽

World Market ◽

Global Trends ◽

Textile Materials ◽

Brics Countries ◽

Recent Trends ◽

Almost All ◽

Special Case

AbstractNonwovens are one of the most versatile textile materials and have become increasingly popular in almost all sectors of the economy due to their low manufacturing costs and unique properties. In the next few years, the world market of nonwovens is predicted to grow by 7%–8% annually (International Nonwovens & Disposables Association [INDA], European Disposables and Nonwovens Association [EDANA], and Markets and Markets). This article aims to analyze the most recent trends in the global export and import of nonwovens, to present two case studies of Polish companies that produce them, and to present one special case study of the market of nonwoven geotextiles in China and India, which are the Asian transition economies among the BRICS countries (Brazil, Russia, India, China, and South Africa).

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Management of Optic Neuritis in Ayurveda - A Special Case Report

Journal of Ayurveda and Integrated Medical Sciences (JAIMS) ◽

10.21760/jaims.v3i5.13847 ◽

2018 ◽

Vol 3 (5) ◽

Author(s):

Dr. Harsha S. ◽

Dr. Mamatha KV.

Keyword(s):

Optic Nerve ◽

Optic Neuritis ◽

Visual Information ◽

Vision Loss ◽

Specific Treatment ◽

Interesting Case ◽

Treatment Modalities ◽

Further Development ◽

Special Case

The optic nerve carries visual information from your eye to your brain. Optic neuritis is when your optic nerve becomes inflamed. Optic neuritis can flare up suddenly from an infection or nerve disease. The inflammation usually causes temporary vision loss that typically happens in only one eye. Those with Optic neuritis sometimes experience pain. As you recover and the inflammation goes away, your vision will likely return. There are no direct references in our classics regarding optic neuritis but can be contemplated as a condition by name Parimlayi Timira. The specific management as such is not cited but a transcendence approach can be done with adopting the treatment which has the ability to pacify the already occurred pathology and prevent the further development of the disease. One such interesting case study on Optic neuritis is elaborated here where in specific treatment modalities (Shodana, Shamana and Kriyakalpas) played role in pacifying the condition.

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