Safety naturally plays a crucial role on the construction site. But the final product must also be safe. Consider structures that use glass walls, such as shopping centers, offices, and public buildings. It is crucial that this glass is impact-resistant. One method for testing this impact resistance is the glass bead bag pendulum test. In this article, we discuss what this test entails, why it's important, and how it's performed.

Safety at different locations

Imagine standing in a busy shopping mall where glass walls have been installed to create a modern and open atmosphere. Thousands of people pass by these glass walls every day, including children who could bump into the glass surfaces. If a glass wall can't withstand such impacts, dangerous situations can arise, such as broken glass and injuries. Therefore, it's essential that these walls are thoroughly tested.

Consider an airport where glass walls are used to shield the gates from the walkways. People lean against the glass walls, and these walls also need to withstand the vibrations of aircraft taking off and landing.

The safety of glass walls installed at height differences, such as those near balustrades, is also important. The safety of the glass wall is particularly crucial here, as there is a risk of falling if the glass doesn't meet the required standards.

Glass walls are therefore fragile and must therefore be thoroughly tested. This is done using the glass bead impact test. This method verifies the strength and resistance of glass panels according to the highest safety standards. The goal is to minimize the risk of glass breakage and injury by designing walls that meet safety standards and pass the impact test without any problems.

How does the glass bead bag pendulum test work?

The glass bead bag is filled with glass beads with a diameter of 3 mm and has a total weight of 50 kg. This load simulates a person falling against a glass wall, for example, due to slipping or tripping.

The test begins by suspending the bag from a rope or cable. The bag is then raised to a specific height and released at a controlled angle, so that it impacts the glass with a specific speed and force. The impact location is carefully chosen to test the most vulnerable parts of the glass, such as the edges or the center of the panel.

The glass must be able to withstand the impact without breaking or creating dangerous shards. If the glass breaks, the way it does so is examined. Safety glass, such as tempered or laminated glass, should shatter into small, blunt pieces or be held together by interlayers, thus minimizing the risk of injury. It's also possible that the glass remains intact, but the frame detaches.

Results of the glass bead bag pendulum test

After the test, the results are evaluated. Glass that successfully passes the glass bead pendulum test is considered safe for applications where impact loads are possible. The glass must retain its shape or break safely without forming dangerous shards.

If the glass wall fails the test, this may lead to adjustments in the design or choice of glass type. Thicker glass, laminated glass, or additional measures such as adding a protective film may be chosen.

The glass bead pendulum test is therefore an essential test for ensuring the safety of glass walls. In busy environments where glass walls are frequently used, such as shopping malls and airports, it is crucial that these walls can withstand impacts. The test simulates the force of a human body or other heavy object against the glass and ensures that the risk of glass breakage and injury is minimized. This allows architects and builders to be confident that the glass walls are not only aesthetically pleasing and functional, but also safe for daily use.

System Flex

An inspiring space works wonders. It's important that the space you work in feels good. That's why System Flex has been producing flexible wall systems for 30 years to create the ideal space. With System Flex's stylish system walls, you can quickly and easily create beautiful and functional spaces in any environment. Curious about the possibilities? Feel free to contact us.