U-shaped glass transmits light while obscuring views. Its U-shaped cross-section functions similarly to channel steel, giving it high load-bearing capacity and strength. U-shaped glass curtain walls offer light transmission, thermal insulation, and high mechanical strength. They are widely used because they are straightforward to install, create distinctive architectural and decorative effects, and reduce the amount of light-metal framing required.

A U-shaped glass curtain wall consists of glass panels and a supporting frame. The glass forms both the building envelope and the decorative surface and may also serve as window glazing. The frame consists of vertical mullions and horizontal rails that support and secure the glass and connect it to the main structure. Loads, including the glass’s own weight and wind loads, are transferred through these connections to the main structure.

U-shaped glass curtain walls are popular with clients and architects because of the following four characteristics:

1. U-shaped glass curtain walls combine the solid appearance of opaque curtain walls with the lightness and delicacy of glass, creating an attractive decorative effect.

2. U-shaped glass curtain walls are non-combustible and have good fire performance. U-shaped glass is virtually non-radioactive, reduces light pollution, and is environmentally friendly.

3. U-shaped glass curtain walls offer consistent color and a range of color options, providing advantages over stone and metal curtain walls.

4. U-shaped glass curtain walls can be constructed as all-glass curtain walls. Because U-shaped glass has very low water absorption, the source describes it as avoiding the dust, water, and oil absorption associated with stone. This helps maintain a clean surface and an attractive decorative effect.