How should attachment to the primary structure be engineered to accommodate differential movement with a glass curtain wall?

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Glass curtain walls must accommodate building movement from thermal expansion, wind sway, and seismic activity. Engineers design anchors with slotted holes, sliding connections, and flexible brackets to allow movement without stressing the glass. Story drift allowances must comply with structural codes. Proper movement design prevents glass breakage, sealant failure, and frame distortion. Coordination between façade engineers and structural engineers ensures compatibility with slab edges, columns, and beam connections.