Abstract
This paper presents a semi-automatic methodology proposed for 3D modeling of utility networks in GIS environment. The ModelBuilder in ArcGIS (ESRI) software is used for implementing this methodology, by developing two tools to automate the construction processes of 3D networks. The first presents a tool to create a 3D Manhole layer from points layer, and the second is a tool to create a 3D pipe layer. For both tools, a work algorithm has been built, in addition to designing user interfaces elements. These tools are stored in a Toolbox called “3D Manhole & Pipe.tbx”. The two previous tools were tested and applied to spatial data for a proposed residential area. The final 3D model of the residential area includes the sewage and stormwater networks, as well as other spatial data such as buildings, parks, roads, etc. This model is able to spot the intersection points in the network, visually or using the 3D analysis available in the software, allowing us to identify problems to be processed and resolved before starting a project, leading consequently to time and cost savings, effort and money. The proposed methodology is an easy and an effective way to build 3D network models (sewer, water..etc), and the developed tools allow the implementation of a set of necessary processes needed to build 3D networks.
Highlights
Several researches have studied 3D modeling of cities in the Geographic Information Systems (GIS) environment [1, 2]
A work algorithm has been built (Fig.4 a, b), in addition to designing user interfaces elements (Fig.4 c, d). These tools are stored in a Toolbox called “3D Manhole & Pipe.tbx”
The 2D Manhole layers were converted to 3D Manhole layers, the 2D pipes layers were converted to 3D pipes layers
Summary
Several researches have studied 3D modeling of cities in the GIS environment [1, 2]. The development of 3D urban models, both above and underground, allows for new approaches to urban planning and management [3, 4]. These approaches serve in emergencies, disaster planning, urbanization verification, and infrastructure networks. Geographic Information Systems (GIS) have a great ability to represent, display, query and manage spatial data (2D or 3D). Attention to the 3D representation of these infrastructure networks has increased rapidly in recent times [4]
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