In monolithic glazing systems, what must the screens and their fastenings be able to do?

In monolithic glazing systems, the design and installation of screens and their fastenings are critical for both structural integrity and safety. The correct answer highlights that all specified conditions must be adhered to.

First, the screens and fastenings need to support twice the weight of the glazing. This requirement ensures that in the event of dynamic loads or unexpected stresses (such as wind pressure or impact), the screens will remain intact and secure, preventing potential failure. This factor is crucial because the glazing is often a significant component of the building envelope.

Secondly, being firmly fastened to framing members is essential for providing stability and preventing movement. Proper fastening guarantees that the screens can withstand environmental forces such as wind, which can otherwise lead to detachment or misalignment, compromising the system's effectiveness.

Lastly, the requirement for screens to be installed within a specified distance (4 inches) from the glass ensures that there is adequate support and protection for the glazing. This proximity helps to maintain structural integrity and allows for proper drainage and ventilation while minimizing the risk of damage to the glass.

All these factors work together to ensure the durability, safety, and performance of monolithic glazing systems. Therefore, the combined conditions outlined lead to the conclusion that all requirements must be met for optimal