Robotic Fabrication of Non-Standard Material

Devadass, Pradeep; Dailami, Farid; Mollica, Zachary; Self, Martin

doi:10.52842/conf.acadia.2016.x.g4f

Cited by 12 publications

(13 citation statements)

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“…Wood Chip Barn at the Architectural Association utilizes inherent characteristics of non-linear logs like forks to construct a truss structure. It demonstrates a research pipeline from extracting basic information of irregular logs such as geometry centerlines and cross-sections to manage the harvested materials for construction (Devadass et al, 2016). Limb uses discarded tree forks that are not harvested due to their low economic value to build a full-scale reticulated shell by replacing mortise and tenon joinery methods (Von Buelow et al 2018).…”

Section: Irregular Logs In Digital Fabricationmentioning

confidence: 99%

“…The abstracted centerline works as a simple but powerful information. Furthermore, the discarded forks can be exploited to create idiosyncratic architectural structures such as trusses or joinery (Devadass et al, 2016). Hence, centerline as a design parameter allows users to identify the overall shape of irregular log geometry and gauge the approximate angle of tree forks.…”

Section: Centerlinementioning

confidence: 99%

“…Cross-sections are also one informative factor extracted from the scanned irregular log geometry. Wood Chip Barn, for example, extracted the cross-sections of the log by contouring them along with one direction (Devadass et al, 2016). In our previous project, Timber De-standardized 1.0, cross-sections were used more closely throughout the design process as essential design parameters.…”

Section: Cross Section and Dimensionmentioning

confidence: 99%

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Timber De-Standardized 2.0 : Mixed Reality Visualizations and User Interface for Processing Irregular Timber

Lok¹,

Bae²

2022

CAADRIA Proceedings

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Timber De-Standardized 2.0 is a mixed reality (MR) user interface (UI) that utilizes timber waste produced by manufacturing dimensional lumber, suggesting an expanded notion for "material usability" in timber construction. The expanded notion of designing with discarded logs not only requires new tools and technologies for cataloguing, structuring, and fabricating. It also relies on new methods and platforms for the visualization and design of these structures. As a MR UI, Timber De-Standardized enables professionals and nonprofessionals alike to seamlessly design with irregular logs and to create viable structural systems using an intuitive MR environment. In order to develop a MR environment with this level of competency, the research aims to finesse the visualization techniques in the immersive full-scale 3D environment and to minimize the use of alternative 2D UI(s). The research methodology focuses on (1) cataloguing and extracting basic properties of various tree logs, (2) refining mesh visualization for better user interaction, and (3) developing the MR UI to increase user design agency with custom menu lists and operations. This methodology will extend the usability of MR UI protocols to a broader audience while democratizing design and enabling the user as co-creator.

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Section: Irregular Logs In Digital Fabricationmentioning

confidence: 99%

Section: Centerlinementioning

confidence: 99%

Section: Cross Section and Dimensionmentioning

confidence: 99%

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Timber De-Standardized 2.0 : Mixed Reality Visualizations and User Interface for Processing Irregular Timber

Lok¹,

Bae²

2022

CAADRIA Proceedings

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“…This helps to ensure that sufficient width of the beams is maintained, but it also means that we can avoid weakening of the material, which would happen if many of its fibres are cut. [23]. The oak logs have a sapwood layer of 2-4 cm thickness that will deteriorate over time and cannot be considered structurally.…”

Section: Geometric Detailingmentioning

confidence: 99%

“…Here, a Fig. 23 Prototype with 15 beams. The fabricated prototype follows a single-curved control surface with an increasing curvature towards the top Fig.…”

Section: Reflections On the Experimental Workflowmentioning

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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The Emergy of Digital Wood

Beorkrem

2019

Lecture Notes in Civil Engineering

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Robotic Fabrication of Non-Standard Material

Cited by 12 publications

References 0 publications

Timber De-Standardized 2.0 : Mixed Reality Visualizations and User Interface for Processing Irregular Timber

Timber De-Standardized 2.0 : Mixed Reality Visualizations and User Interface for Processing Irregular Timber

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

The Emergy of Digital Wood

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