10/08/2026
đź“Ś How Curtain Walls Are Protected During Seismic Events!?
Curtain wall systems are "not designed to resist the building's seismic loads". Instead, they are engineered to accommodate the building's movement while maintaining their structural integrity, weather resistance, and occupant safety.
- Key Seismic Protection Strategies for Curtain Walls:
• Slotted Connections:
Anchors with slotted holes allow controlled movement of the curtain wall frame during seismic events, reducing stress transfer to the glazing system.
• Inter-Story Drift Accommodation:
Adequate movement joints are provided between the curtain wall and structural slabs to accommodate inter-story drift without damaging the façade.
• Structural Silicone Sealants:
High-performance structural silicone remains flexible under movement, helping absorb displacement while maintaining the weather seal.
• EPDM Gaskets & Setting Blocks:
Flexible EPDM gaskets and setting blocks cushion the glass panels, preventing direct contact with the aluminum frame and minimizing the risk of glass breakage.
• Dead Load & Sliding Anchors
The system typically incorporates:
- A "Dead Load Anchor" to safely support the curtain wall's self-weight.
- A "Sliding (Wind/Seismic) Anchor" to permit controlled horizontal and vertical movement caused by wind and seismic actions.
Engineering Principle:
A well-designed curtain wall should "move with the building—not against it." By allowing controlled movement instead of restraining it, the façade can maintain its performance and significantly reduce the risk of glass failure during earthquakes.
Crafted with Precision. Designed for Excellence.
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