PRANCE metalwork is a leading manufacturer of metal ceiling and facade systems.
How does a Curtain Wall System perform under high wind loads and seismic conditions?
A high-performance metal curtain wall system performs reliably under high wind loads and seismic conditions when its design, materials, and connections are engineered specifically for the project’s wind and seismic demand. For projects in the Middle East (Dubai, Abu Dhabi, Riyadh, Doha) and Central Asia (Kazakhstan, Uzbekistan, Kyrgyzstan), engineers must start with accurate site-specific wind maps and seismic hazard data, and then select appropriate aluminum or steel mullions, reinforced transoms, and high-strength anchors. Key elements include provision for controlled flexibility—slotted anchor points and sliding brackets that accommodate differential movement—while preserving lateral stiffness through continuous mullion alignment and adequately designed moment-resisting corners. The curtain wall’s dead load must be supported independently of the building’s primary structure using adjustable anchors; lateral loads from wind are transferred to structural floors via bracket systems sized per local code. Seismic performance relies on allowing in-plane and out-of-plane movement without glass breakage: laminated or tempered laminated glazing, flexible gasket systems, and adhesive-backed tapes reduce risk of glass failure. Drainage and weep designs must be resilient to vibration and flexing so water management continues under dynamic loads. For tall towers in coastal Qatar or exposed steppe sites in Kazakhstan, corrosion-resistant finishes (anodized or high-quality powder coat on aluminum; stainless steel fasteners) and regular joint inspection further preserve performance. Prefabricated unitized assemblies, when factory-controlled, allow accurate tolerances and tested movement joints, while stick systems can be detailed with tested expansion joints. Ultimately, independent structural calculations, mock-up testing under cyclic loading, and compliance with EN, ASTM, or local GCC and Central Asian standards are the foundation of reliable wind and seismic performance.