ARCHITECTURE
Besides the point
cloud
Edward de Jager BPAS
LiDAR’ s value lies not in the scan alone, but in the certainty that accurate building data can bring to design, construction, and long-term asset management, argues Edward de Jager, Director: Operations at BPAS Architects.
What is LiDAR?
Light Detection and Ranging( LiDAR) in architecture is a high-speed 3D laser scanning technology that measures physical spaces with millimetre precision. It works by firing rapid laser pulses to map existing conditions into detailed datasets called point clouds.
People often think LiDAR scanning is simply a more advanced way to measure a building. That misses the point entirely.
A raw LiDAR scan is not a finished building information model. In reality, converting a LiDAR point cloud, a massive collection of 3D data points generated by laser scanning, into a smart, parametric BIM model still requires considerable human expertise and processing time.
The scan is only the starting point. Its value lies in what accurate building data makes possible. At BPAS, we use LiDAR data to create digital models and twins that support coordination, asset management, and long-term decision-making across a building’ s lifecycle.
Once a point cloud has been interpreted and integrated into BIM, teams no longer need to rely solely on assumptions, incomplete surveys, or outdated drawings. They can work from a precise digital representation of the building as captured. In the built environment, where small inaccuracies can snowball, this greater certainty can reduce long-term costs.
The hidden costs of“ good enough”
Construction projects rarely fail or significantly overrun deadlines and budgets because of a single catastrophic error. Typically, problems accumulate.
The industry often defaults to“ good enough” traditional surveys, ignoring the compounding interest of errors when each consultant works off an inaccurate original measurement. Those inaccuracies can begin to compromise a project during schematic design, as successive layers of engineering and detailing are built on a flawed foundation. Minor errors then become structural clashes, wasted materials, and expensive redesigns during construction.
The industry has traditionally accepted some uncertainty as inevitable, especially with
30 spring 2026 | www. tobuild. co. za