What is the typical deflection limit used in storefront applications for structural integrity?

In storefront applications, the typical deflection limit for structural integrity is often set at span ÷ 175. This standard is used to ensure that the glazed areas maintain both functional performance and aesthetic appearance under load. A deflection limit of span ÷ 175 is designed to prevent excessive movement that could lead to issues such as stress on the glazing, misalignment of components, or even potential failure in securing the glass panels within the framing.

Deflection criteria like span ÷ 175 provide a balance between rigidity and flexibility. It allows some movement due to loads, like wind or thermal expansion, while preventing excessive bending that could compromise the system. This standard helps in designing storefronts that remain visually appealing as well as safe and structurally sound.

The other deflection limits presented, such as span ÷ 100, span ÷ 200, and span ÷ 300, do not correspond to typical practices for storefront applications. They may be relevant in different types of applications or materials but are not adopted for storefront glazing where maintaining a span ÷ 175 limit is ideal for both safety and performance.