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Towards an On-site Fabrication System for Bespoke , Unlimited and Monolithic Timber Slabs

, , , , and . IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) Las Vegas, NV, USA (Virtual) - Workshop on Construction and Architecture Robotics, 2020, Las Vegas, NV (Virtual), IEEE/RSJ, (2020)
DOI: 10.13140/RG.2.2.14098.68802

Abstract

We present the concept- and contextualization of a robotic fabrication system for bespoke, monolithic wood slabs for multi-story building structures. Timber Construction is seen as the most promising technology for the sustainable development of continuously growing urban areas around the world, resulting in increasing legislative support. Although employing high levels of automation in prefabrication, wood building systems and construction techniques are currently hardly competitive outside of modular construction paradigms – restricting the material's use in the majority of building typologies. In many projects, the use of concrete is still preferred, as slabs can be poured into monolithic slabs of various geometries and steel reinforcement can be freely arranged according to structural requirements. In order to allow engineered wood structures to be used across all building types, we propose a co-designed wood construction system. A respective robotic fabrication platform can be employed in two on-site fabrication scenarios. In both cases the mobile robot moves relative to a preinstalled wood-panel surface that serves as semi-controlled environment and is incrementally reinforced through iterative placement of wood laths using nail-press gluing. This results in multi-directional, bespoke timber slabs of unlimited dimensions and continuous stiffness gradients.

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