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9 References Advanced Building Skins [1] Homepage of the Museum „Joanneumsviertel“ , http://www.joanneumsviertel.at [2] SFL Technologies“ , www.sfl-gmbh.at - 7 -
Prof. Dr.nat.techn. Oliver Englhardt Institute of Building Construction Graz University of Technology Copyright © with the authors. All rights reserved. A Tool that Combines Building Information Modelling and Knowledge Based Engineering to Assess Facade Manufacturability Summary Eleanor Voss, Miss University of Cambridge, UK, ev236@cam.ac.uk Mauro Overend, Dr University of Cambridge, UK, mo318@cam.ac.uk Modern façade design projects involve a wide range of materials whose manufacturing and installation impose many different constraints on the design. The façade engineer’s role is to manage and apply these constraints to achieve an optimal design. The paper presents a tool to assist façade consultants in the capture, storage and use of ‘downstream’ design constraints. The aspect of the design process to be targeted by the tool is identified through two process mapping methodologies. The tool captures expert knowledge of the geometric constraints placed on façade panels due to the manufacturing processes. As a demonstration, the tool is applied to real-world façade projects, and is shown to identify areas of the design requiring modification to improve manufacturability. Keywords: Knowledge, Facade, Manufacturability, BIM 1 Introduction The façade sector is information intensive, and the development of a good façade design relies on the façade consultant’s ability to gather and assimilate large quantities of information regarding the constraints on the design. Using this information, the consultant must identify and communicate the impact of these constraints to the design team. The task is made more challenging by the increasing complexity of façade designs. This complexity arises both from the geometry and from the materials and processes required to produce façade panels to increasingly high-performance specifications. The primary benefits of Building Information Modelling (BIM) include the efficient storage, access and transfer of design information, and increased collaborative working [1]. As a result BIM has been proposed as a tool to manage and communicate design information[1]. In recent years the construction industry as a whole has increased its use of BIM. However, BIM can be used to improve the end product as well as the design process. The availability of semantic digital design information provides the construction industry with the opportunity to employ knowledge-based engineering techniques[2]. Knowledge-based engineering techniques have previously been used successfully in manufacturing industries to improve manufacturability using Design for Manufacture (DFM) strategies [3]. This has relied partly on the availability of semantically rich digital design information. Fox et al.’s [4] review of DFM and its applicability to the construction industry places the façade sector in the group of sectors to with the potential to benefit most from cost reductions through DFM. - 1 -
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ABS_07 Lucio Blandini Timo Schmidt
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Prof. Dr.nat.techn. Oliver Englhard
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