In the modern construction industry, as the core component of building facades, 

curtain walls are developing rapidly toward complex shapes, integrated functions 

and digital design. Special-shaped curved and large-span curtain walls are widely 

adopted in super high-rise buildings and urban landmark structures. Traditional 2D 

measurement methods can no longer meet the stringent requirements for high-

precision construction implementation and quality control.

With the in-depth implementation of BIM technology throughout the whole life 

cycle of engineering projects, curtain wall engineering has raised higher 

requirements for the consistency between design models and on-site construction 

data. As a core technical tool connecting digital design and physical construction, 

3D laser scanning technology has become an indispensable solution for the digital 

upgrading of curtain wall engineering.