What is the maximum differential deflection for adjacent unsupported edges of interior glazing?

The maximum differential deflection for adjacent unsupported edges of interior glazing is established as 42 inches. This standard is critical for maintaining the structural integrity and safety of glazing systems within commercial buildings.

When considering the design and installation of glazing, it's essential to ensure that the material is capable of withstanding deformations caused by various factors, such as thermal expansion, wind pressure, and shifting foundations. Allowing for a maximum deflection of 42 inches helps prevent undue stress that could compromise the glazing's performance, potentially leading to cracks or breakage.

In a practical context, this means that when adjacent unsupported edges of glass are subjected to differential movement, the design must accommodate this maximum deflection without compromising the position or structural prowess of the glazing system. Understanding this limit is crucial for construction professionals, as it directly impacts the longevity and safety of building systems where large spans of glazing are used.