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Article

Automatic Generation of High-Accuracy Stair Paths for Straight, Spiral, and Winder Stairs Using IFC-Based Models

Department of Civil Engineering, Feng Chia University, Taichung 407, Taiwan
ISPRS Int. J. Geo-Inf. 2020, 9(4), 215; https://0-doi-org.brum.beds.ac.uk/10.3390/ijgi9040215
Received: 27 February 2020 / Revised: 22 March 2020 / Accepted: 27 March 2020 / Published: 31 March 2020
(This article belongs to the Special Issue 3D Indoor Mapping and Modelling)
The indoor space model is the foundation of most indoor location-based services (LBS). A complete indoor space model includes floor-level paths and non-level paths. The latter includes passages connecting different floors or elevations such as stairs, elevators, escalators, and ramps. Most related studies have merely discussed the modeling and generation of floor-level paths, while those considering non-level paths usually simplify the formation and generation of non-level paths, especially stairs, which play an important role in emergency evacuation and response. Although the algorithm proposed by i-GIT approach, which considers both floor-level and non-level paths, can automatically generate paths of straight stairs, it is not applicable to the spiral stairs and winder stairs that are common in town houses and other public buildings. This study proposes a novel approach to generate high-accuracy stair paths that can support straight, spiral, and winder stairs. To implement and verify the proposed algorithm, 54 straight and spiral stairs provided by Autodesk Revit’s official website and three self-built winder stairs are used as test cases. The test results show that the algorithm can successfully produce the stair paths of most test cases (49/50), which comprehensively extends the applicability of the proposed algorithm. View Full-Text
Keywords: building information modeling (BIM); indoor topology; spiral stairs; winder stairs; industry foundation classes (IFC) building information modeling (BIM); indoor topology; spiral stairs; winder stairs; industry foundation classes (IFC)
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MDPI and ACS Style

Lin, W.Y. Automatic Generation of High-Accuracy Stair Paths for Straight, Spiral, and Winder Stairs Using IFC-Based Models. ISPRS Int. J. Geo-Inf. 2020, 9, 215. https://0-doi-org.brum.beds.ac.uk/10.3390/ijgi9040215

AMA Style

Lin WY. Automatic Generation of High-Accuracy Stair Paths for Straight, Spiral, and Winder Stairs Using IFC-Based Models. ISPRS International Journal of Geo-Information. 2020; 9(4):215. https://0-doi-org.brum.beds.ac.uk/10.3390/ijgi9040215

Chicago/Turabian Style

Lin, Will Y. 2020. "Automatic Generation of High-Accuracy Stair Paths for Straight, Spiral, and Winder Stairs Using IFC-Based Models" ISPRS International Journal of Geo-Information 9, no. 4: 215. https://0-doi-org.brum.beds.ac.uk/10.3390/ijgi9040215

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