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Seismic Design Considerations for Towers Glazing Systems

I need to share some important points related to the curtain wall and glazing systems design; Structurally, which we usually consider regarding seismic loads on high-rise buildings/Towers, particularly in a seismically active region.

In the Tower's design, the enormous weight of the Glazing system attached to the building's primary structure is not the bottleneck but the impact of seismic and wind loads on the system over the tower's total height. So, these loads require well-studied and sufficient solutions to accommodate their impacts properly during environmental and seismic events.

It is important to know that there is a direct correlation/relationship between Tower height, and the impact of seismic loads and wind loads, as tower height increases, so does the intensity of these loads. 



Photo Credit: Jeddah Tower; The World’s Tallest Building (1000 meters in Height).





The following points are the outlines of considerations, regarding the Curtain wall and glazing system structural design under the Seismic requirements umbrella:

. Make sure to design Flexible Connections, to connect the curtain wall/Glazing system to the tower's primary structure, in order to provide the ability to accommodate sway under wind or seismic loads. the design must consider how the system will deal with the lateral movement.

. The frame design of the Façade glazing system has to handle lateral forces as well. The frame must be able to deform within the allowable limits, without contacting the glass panes during the event to avoid damage in the glass.

. The system design has to allow expansion and contraction through the support/Fixation system, in line with the differential movement between floors during the event.


Furthermore, we also have some advanced techniques that can be considered and integrated with the curtain wall and glazing system design, such as seismic dampers or dissipative devices, In case the tower structure already has these features, which can absorb the seismic energy, during lateral movement events.

Keep reminded; that you have to enhance the resilience of curtain wall and glazing systems against lateral forces.


Please share the article with the people concerned if you consider it a benefit.
Written by Jehad Alkhandaq.

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