Abstract
Civil engineering includes a wide range of applications that require three-dimensional (3D) information. With the advent of LiDAR (Light Detection And Ranging) technology, obtaining 3D terrain information accurately in a cost and time effective manner became more popular. In this paper, three case studies demonstrate the roles and applications of airborne LiDAR data including highway, transmission line and hydropower dam development projects. In first case study, the highway alignment was considerably changed after the initial design stage. LiDAR data was able to do the re-alignment survey quickly, allowing for prompt changes in design. In the next case study, a comparison is made between conventional transmission route alignment design and the design using PLS-CADD with LiDAR data. Utilizing the LiDAR data in PLSCADD allows transmission line engineers to model the construction costs of several alignments options effectively and efficiently compared to the conventional method. The last case study uses LiDAR for obtaining the necessary information for proposed dam. Using LiDAR data maximizes topological accuracy and volume measurements while minimizing survey time and costs. Furthermore, utilizing the multi-temporal LiDAR data can reveal valuable information such as topography changes. LiDAR survey technology has proven that it is the best method to capture accurate data from the earth surface which provides maximum density of topographical & digital imagery information for various applications.
Highlights
Analogue data is data that is represented in a physical way, which has some limitations in terms of collecting, storing, accessing, processing, sharing and visualizing this type of data
In the case study, a comparison is made between conventional transmission route alignment design and the design using PLS-CADD with LiDAR data
The ability of LiDAR data to provide maximum accuracy and density of topographical & digital imagery data while minimizing survey time and cost has led to various industries to utilize this technology for their various applications, including engineering, infrastructure, environment, disaster, and natural resources
Summary
Analogue data is data that is represented in a physical way, which has some limitations in terms of collecting, storing, accessing, processing, sharing and visualizing this type of data. The ability of LiDAR data to provide maximum accuracy and density of topographical & digital imagery data while minimizing survey time and cost has led to various industries to utilize this technology for their various applications, including engineering, infrastructure, environment, disaster, and natural resources. Some of the applications of LiDAR data in civil engineering are as detailed below: a) Pipeline, railway and road surveying: LiDAR helps in design, feasibility studies, slope stability monitoring, and maintenance of pipelines, railways and roads. C) Telecommunications and urban planning: LiDAR allows for accurate 3D-modeling from high density digital data for use in telecommunications and urban planning [2] it assists in optimizing telecommunication networks, transportation planning, management and design. LiDAR maximizes topological accuracy and volume measurements while minimizing survey time and costs It helps in optimizing dam infrastructure design and allows for slope stability analysis. In this paper three case studies will demonstrate the roles and applications of airborne LiDAR data for highway, transmission lines and hydropower dam development projects
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