Generated Lamella

Tamke, Martin; Riiber, Jacob; Jungjohann, Hauke

doi:10.52842/conf.acadia.2010.340

Cited by 5 publications

(3 citation statements)

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“…The construction principle used for demonstrating the workflow is a so-called Zollinger (or lamella) roof, where a large span can be achieved with more minor elements. The principle is well-known and used in various projects related to mass customisation and automated fabrication workflows, such as the Generated Lamella [9]. These projects use standard timber profiles rather than naturally curved wood, as proposed here.…”

Section: Research and Technological Developments In Wood Manufacturingmentioning

confidence: 99%

Timber structures made of naturally curved oak wood: prototypes and processes

Larsen

Aagaard

Hudert

et al. 2022

Archit. Struct. Constr.

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Highly optimised processing workflows characterise today's wood industry. The gained efficiency is mainly directed towards making standardised linear materials that fulfil the market's expectation of a continuous flow of identical products with certain constant specifications. The research presented here seeks to question these limitations and provide another approach to the use of wood in construction. The study involves complex geometry handling, architectural design, and material and structural considerations. Trees absorb CO 2 during growth, and as a construction material, wood can function as CO 2 storage, thereby reducing the levels in the atmosphere during the lifetime of the building-and even longer if the building components can be reused. We have seen a significant rise in wood construction over the past few years. This is partly due to growing climate awareness and the increased availability of engineered wood products (EWP). EWPs are reliant on uniform tree production. With growing interest in using wood for construction, an increase in plantation forests is predicted, leading to a lack of biodiversity in the affected areas. The consideration for the general climate expressed through the increased use of wood as a building material may thus appear to be in contrast to the efforts to improve biodiversity. This research seeks to provide an alternative route where non-uniform wood, usually used as firewood, can be used as a construction material. The project demonstrates possibilities that emerge from engaging with the wood as a specific occurrence of a biological entity rather than a standardised material. While historical precedents inspire the research, the project has been developed using digital tools, such as laser scanning, algorithmic design and robotic fabrication. We have developed a unique design-to-production workflow that uses curved natural wood in its original form to enable curved architectural designs. The workflow thereby links the inherent properties of the wood to a distinct mode of expression. The wood is retrieved from a sawmill that collects discarded tree trunks from local forests. The sawlogs are registered with a 3D scanner, and a customised parametric method is used to handle the geometric information and establish a database of the irregular saw logs. A custom-made algorithmic design tool identifies where the sawlogs fit best in a predefined construction design based on the database. Machining data is directly extracted for the subsequent robotic processing. The irregular shape of the material suggests a discrete analysis of the structural properties of each component. A series of destructive physical tests are carried out to indicate the capacity of the structural system and the joint solution. To demonstrate the viability of the workflow, study challenges in controlling tolerances and humidity, and develop an assembly strategy, we have produced a construction prototype of 15 members in the size of 3 m in width and 4 m in height.

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Section: Research and Technological Developments In Wood Manufacturingmentioning

confidence: 99%

Timber structures made of naturally curved oak wood: prototypes and processes

Larsen

Aagaard

Hudert

et al. 2022

Archit. Struct. Constr.

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“…The principle allows the construction of large spans using relatively small wood members. Previous research on the lamella roof principle demonstrates workflows that integrate Exploring natural wood Larsen, Aagaard computational design and robotic fabrication (Tamke, Riiber, and Jungjohann 2010) However; these projects make use of standardized timber rather than wood in its natural shape.…”

Section: Architectural Investigationsmentioning

confidence: 99%

Exploring Natural Wood

Larsen¹,

Aagaard²

2019

ACADIA Proceedings

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“…This characteristic of lamella structures is one of the reasons to reconsider their use in contemporary construction practice. This is guided by the development of new technologies and digital fabrication, which enable uncomplicated production of elements (for example, on CNC machines), faster construction, and economic structures, all following the trends of sustainable development [14,15]. The small number of lamella types and their connections leads to a reduction in production costs.…”

Section: Introductionmentioning

confidence: 99%

Elements of a Timber Lamella Structure: Analysis and Systematization of Joints

et al. 2023

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The subject of this paper is the elements of a timber lamella structure: the lamellae and their joints. The lamella structure is usually in a diamond pattern, so it relies on additional elements to achieve stability. The analysis of the elements precedes the design of a prototype of a timber lamella vault. The characteristic diamond pattern can be kept for the design of rigid or semi-rigid joints. The design of the joints is challenging, so this paper focused on the analysis and systematization of joints designed for timber lamella structures. The existing timber lamella joints were classified and analyzed based on five parameters: eccentricity, load capacity, the number of elements, easiness of assembly, and adaptability to the circular cylindrical surface, to systemize the existing joints and propose a new one. A design for a new joint was proposed based on the presented joints. The systematization and discussion gave a comparison of all joints, their advantages, and limitations. The conclusion was that the geometry of a circular cylinder and the type of elements for the prototype confirmed all the benefits of the historical lamella structures: uniformity of elements, easy assembly, and economical design.

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Generated Lamella

Cited by 5 publications

References 0 publications

Timber structures made of naturally curved oak wood: prototypes and processes

Timber structures made of naturally curved oak wood: prototypes and processes

Exploring Natural Wood

Elements of a Timber Lamella Structure: Analysis and Systematization of Joints

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