Semiautomated Primary Layout Definition with a Point Cloud for Building-Envelope Renovation

Author:

Iturralde Kepa1ORCID,Gambao Ernesto2ORCID,Bock Thomas3ORCID

Affiliation:

1. Chair of Digital Transformation in Construction, University of Stuttgart, 70569 Stuttgart, Germany

2. Centre for Automation and Robotics (CAR UPM-CSIC), Universidad Politécnica de Madrid, 28040 Madrid, Spain

3. Chair of Building Realization and Robotics, Technical University of Munich, 80333 Munich, Germany

Abstract

Prefabricated modules are being used to renovate the building envelope. However, compared to manual methods, the design and prefabricated module’s definition is time consuming. Therefore, it is necessary to improve the efficiency of the prefabricated layout definition processes by incorporating automation and computational design. The purpose of this paper is to present a semi-automated definition of the layout of the prefabricated modules with the only input of the existing building facade being the Point Cloud. In this research, a novel step-by-step workflow was developed. More precisely, an algorithm was developed that processes the coordinates of each point of the cloud and generates the layout of the prefabricated modules. To validate the workflow and the algorithm, four facades were tested, considering two parameters: (a) working time and (b) output accuracy. According to the results, it was concluded that spending more time achieving an accurate laser data acquisition can be a good strategy to obtain the primary layout with sufficient precision.

Funder

European Commission

Publisher

MDPI AG

Subject

Building and Construction,Civil and Structural Engineering,Architecture

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