As 3D building modeling becomes central to development, new techniques and technologies are paving the way for efficient, accurate, and detailed representations of built environments. This session will explore current methodologies for generating 3D models from lidar data and other sources, highlighting the challenges and solutions that drive advancements in building modeling. By diving into case studies and practical applications, participants will gain insights into the accuracy, efficiency, and standards adherence crucial to successful modeling for construction and urban development projects.Â
3D Building Modeling using Lidar
To support a statewide initiative for comprehensive 3D building models, this presentation from Dewberry outlines the processes involved in creating high-accuracy models using lidar point cloud data. The team behind this project explored various methods for classifying lidar data and automating the extraction of 2D building footprints, ultimately selecting an approach that optimally balanced accuracy and detail within Level of Detail 2 (LOD2) standards. This session will discuss the challenges encountered, including lidar limitations such as vegetation occlusion and errors in automated methods, and share strategies for improving model accuracy and meeting client specifications.
Megan Anderson, Dewberry
Employing 4D Construction for Public Space Project
Amsterdam is famous for its canals, bridges, biking, and historic attractions. As part of the nation’s Oranje Loper program Amsterdam is making changes to improve public spaces and traffic flows with a project to renovate 2.5 kilometers of road and tram track. Located in one of the most congested areas in Amsterdam, the construction site posed many challenges including a high degree of expertise needed to reconstruct and refurbish nine historic 100-year-old bridges in poor condition. The project also had 12 different schedules making it difficult to get a complete overview of planned material, human and equipment resource quantities of the project. Given the project’s complexity, the team needed a 4D construction solution to visualize and rehearse construction plans to prioritize safety and involve stakeholders in project plans. With the 4D schedules they were able to easily explain the requirements of the building site, execution times and safety measures to the entire project team and stakeholders. Working in a connected digital environment streamlined communication and change management, saving 800 resource hours for a single bridge. Utilizing a digital construction solution provided real-time resource data and identified 25 risks directly from the 4D schedule, accelerating execution and improving safety.
Joe Travis, Bentley Systems
