Evaluation of drainage gradient using three-dimensional measurement data and physics engine

Kosei Ishida*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The shape of a building can be recorded through various technologies, such as three-dimensional (3D) laser scanners and photogrammetry. The 3D measurement technology facilitates the mensuration of unevenness of a reinforced concrete structure, horizontality of the floor, and drainage gradient. In particular, measuring devices with a tilt sensor (e.g., 3D laser scanners) allow the evaluation of the horizontality of buildings using point cloud data. In this study, a method is introduced to evaluate the drainage gradient using 3D polygon data and a physics engine. The point cloud data were acquired via a 3D laser scanner and converted into polygon data. The polygon data were imported into a virtual space through the physics engine. Subsequently, the drainage capacity was evaluated by placing water particles on the polygon data and observing their movement according to the physics engine. The aim of this procedure is to evaluate the inclination angle of all parts of a building (e.g., rooftop) and develop a method for identifying the locations where puddles can frequently occur. Our simulation software was created using Unity and NVIDIA FleX. In this research, a simulation was conducted in which the polygon data were imported into the developed software, and the drainage situation was predicted.

Original languageEnglish
Title of host publicationProceedings of the 37th International Symposium on Automation and Robotics in Construction, ISARC 2020
Subtitle of host publicationFrom Demonstration to Practical Use - To New Stage of Construction Robot
PublisherInternational Association on Automation and Robotics in Construction (IAARC)
Pages1219-1226
Number of pages8
ISBN (Electronic)9789529436347
Publication statusPublished - 2020
Event37th International Symposium on Automation and Robotics in Construction: From Demonstration to Practical Use - To New Stage of Construction Robot, ISARC 2020 - Kitakyushu, Online, Japan
Duration: 2020 Oct 272020 Oct 28

Publication series

NameProceedings of the 37th International Symposium on Automation and Robotics in Construction, ISARC 2020: From Demonstration to Practical Use - To New Stage of Construction Robot

Conference

Conference37th International Symposium on Automation and Robotics in Construction: From Demonstration to Practical Use - To New Stage of Construction Robot, ISARC 2020
Country/TerritoryJapan
CityKitakyushu, Online
Period20/10/2720/10/28

Keywords

  • 3d laser scanner
  • 3d surface
  • Drainage gradient
  • Physics engine
  • Point cloud

ASJC Scopus subject areas

  • Artificial Intelligence
  • Civil and Structural Engineering
  • Human-Computer Interaction
  • Geotechnical Engineering and Engineering Geology

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