1. 3D Laser Scanning Technology: An Essential Solution for Digital Upgrading

 of Curtain Wall Engineering

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.

2.Deficiencies of Traditional Solutions: Large Errors and Low Efficiency

Traditional 2D measurement and construction methods have obvious shortcomings in complex curtain

wall projects, which seriously restrict the improvement of construction efficiency and engineering quality.

The core problemsare summarized as follows:

2.1 Complex Special-shaped Curtain Wall Structure with Large Measurement Deviations

For special-shaped curtain wall structures such as curved and hyperbolic surfaces, there

are significant deviations between the measured data of traditional measuring tools and

the design model. Low-precision data cannot support the high-standard construction and

customized processing requirements of 

special-shaped curtain walls.

2.2 Low Measurement Efficiency Fails to Meet Short Construction Schedule Requirements

Curtain wall engineering features dense keels and numerous construction nodes.

Traditional manual measurement requires point-by-point positioning and

section-by-section measurement, and the measurement work for the curtain wall of a

single building often takes several days or even weeks.

3.    RUIDE Group’s Integrated Solution Fully Empowers Quality and Efficiency 

Improvement of Curtain Wall Engineering

This solution adopts the SPL series Terrestrial 3D laser scanner as the core data acquisition

device to obtain full-coverage on-site spatial data. The acquired point cloud data is

intelligently processed via AcuteLas Studio software, and finally, high-precision modeling

and optimized design of aluminum veneers are realized through Rhino software,

comprehensively boosting the quality and efficiency of curtain wall engineering

construction.

3.1 RUIDE SPL Series Scanner: High Precision, Light Weight and Doubled Efficiency

• Multi-range adaptation and millimeter-level high precision:

Equipped with multiple range gears of 1500m, 620m and 180m, it enables millimeter-level 

3D scene reconstruction;

• Lightweight body for easy field operation: The net weight is only 4.85kg,

facilitating on-site transportation, setup and deployment;

• Full-color high-definition collection with high detail restoration: Built-in dual

12-megapixel ultra-high-definition cameras ensure clear and recognizable real scene

13-details;

• Ultra-fast scanning doubles field work efficiency: The shortest single-station

scanning time is only 16 seconds, which greatly reduces on-site field operation time and

improves construction efficiency;

• Multi-sensor integration for more accurate data: Integrated with dual-axis

compensation, GNSS, electronic compass, altimeter, thermometer and other multiple

sensors, it monitors the equipment operating status in real time to ensure accurate and

reliable operation data.

4. Software Advantages: Accurate Restoration and On-site Stitching

4.1 Full 3D Point Cloud Restoration Adapts to All Types of Special-shaped Buildings

The equipment can fully capture the 3D spatial form of special-shaped and curved curtain

walls, generate high-precision dense point cloud data, and accurately restore all structural

details such as keel joint connections and profile dimensions.

4.2 Complete and High-precision Data Guarantees Construction Quality

The system supports automatic stitching of multi-station point cloud data with a

comprehensive measurement accuracy of up to 3mm, which can accurately capture the 3D

spatial position, node connection status and installation deviation of curtain wall keels.

The actual engineering measurement deviation can be controlled within 1mm.

4.3 Efficient and Intelligent Operation Adapts to Tight Construction Schedules

The maximum scanning rate of the SPL series scanner reaches 2 million points per second.

Combined with the one-click automatic stitching and intelligent denoising functions of

AcuteLas Studio software, the data processing process requires no manual intervention,

greatly improving the overall operation efficiency. The scanning efficiency under different

parameters is shown in the table below:

In addition, paired with the exclusive RUIDELidar Field real-time stitching software, the

scanner supports full-process remote scanning operation via industrial tablets. It enables

real-time visual preview of scanning data and synchronous point cloud stitching and

registration. The system supports one-click precise registration of total station data as well

as manual fine adjustment and optimization, realizing real-time visualization and

controllability of 3D point cloud results, which effectively lowers the difficulty of on-site

field operations.

5. Engineering Application Cases

5.1 Case 1: Scanning of Building Curtain Wall Frame and Custom Modeling of Aluminum Veneer

5.1.1 Project Background

The curtain wall project of an urban commercial complex faced prominent problems with

traditional 2D measurement methods, including incomplete data acquisition and large

dimensional deviations. These drawbacks failed to meet the high-precision installation

standards for aluminum veneers, and the lengthy measurement cycle severely hindered

the overall construction progress.

5.1.2 Application Scheme and Implementation Effects

In this project, the RUIDE SPL series 3D laser scanner was adopted for full-coverage

scanning of the curtain wall frame. The full data collection of core area frame was

completed within only 1 hour, fully recording key information such as keel nodes, profile

sizes and spatial positions. After field collection, the actual measurement accuracy reached

2mm via AcuteLas Studio software, providing reliable data support for 1:1 real-scene

modeling of aluminum veneers. With this digital solution, the project measurement period

was shortened from several days (traditional method) to within one day, and the

qualification rate of aluminum veneer processing was increased to more than 99%.

5.2 Case 2: Special-shaped Curtain Wall Frame Scanning and Aluminum Veneer Reverse

Design for Large Stadiums

5.2.1 Project Background

For the stadium project of a provincial large-scale sports center, traditional measurement

methods cannot fully restore the 3D curved surface morphology, making it difficult to

support the reverse modeling and customized design of aluminum veneers.

5.2.2 Application Scheme and Implementation Effects

The project adopted the RUIDE SPL series 3D laser scanner to completely collect core data

such as the 3D spatial morphology of the frame and node connection modes. Acuteas

Studio software was used to complete automatic stitching and precise registration of

multi-station point clouds to generate a high-precision point cloud model of the curtain

wall frame.

The processed high-precision point cloud data was imported into Rhino software to carry

out reverse modeling of aluminum veneers based on real-scene point cloud data, which

accurately matched the curved surface morphology and frame installation dimensions,

and completed the detailed design and shape optimization of special-shaped aluminum

veneers.

This solution achieves seamless integration between digital design and on-site

construction, keeping curtain wall installation deviations strictly within the millimeter level.

It effectively shortens the construction period, ensures efficient and high-quality delivery

of landmark projects, and has gained wide recognition from clients.