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Risk or Problem
Large façade glazing panels amplify even small fabrication deviations. Optical distortion, panel bow and dimensional tolerances can become highly visible once glass is installed across reflective building elevations.
If distortion is not controlled during fabrication, visual inconsistencies may only appear after installation.
ASG Quality Control Process
For complex façade packages, ASG verifies distortion and tolerances before assembly.
Our inspection includes:
• Panel dimensions and thickness verification
• Roller wave distortion measurement after tempering
• Bow deformation across the panel surface
Where required, finished IGU units are also assessed using grid board visual testing to confirm optical flatness across the entire panel.
QC Evidence
 Dimensional verification
Roller wave measurement
Grid board distortion test
Outcome
By verifying distortion and tolerances during fabrication, ASG helps ensure façade glazing maintains visual consistency once installed.
Project reference
UNSW HTH Project
ASG contributed to the façade glazing package for the UNSW HTH project, where maintaining optical consistency across large reflective surfaces was a key requirement.
By implementing strict quality control measures during fabrication, including distortion verification and tolerance checks, ASG ensured the final installation achieved a consistent and controlled visual outcome.
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Shaping the Future of Engineering & Astronomy at Macquarie University
Early-Stage Glass Decisions That Reduce Compliance Risk on Site