Unitized Curtain Wall System
Unitized curtain wall systems consist of large glass units that are manufactured and glazed in the factory and then sent to the construction site. Once on site, the unitized curtain walls can be hoisted to anchors attached to the building, with only one anchor per mullion to the face or top of the slab. Interlocking unitized curtain walls frame members are weatherproofed to seal against each other horizontally and vertically. This accommodates thermal expansion and contraction, differential motion between floors, concrete creep, column shortening, and seismic motion. Most unitized curtain wall systems are installed around each floor in a sequential fashion, moving from the bottom to the top of the building.
Unitized Curtain Walls Can Be Installed Quickly
The unitized curtain walls adopt the overall hanging installation, which is quick to install and the on-site construction period is short. They can be constructed synchronously with the main structure, allowing vertical cross construction, which shortens the construction period of the building. In addition, the structural sealing method is adopted between the unit panels, which not only ensures the sealing performance but also effectively reduces the degree of pollution on the surface of the unitized curtain walls, improving the decorative effect.
Excellent Structural System
For the structural system, a multi-layer continuous integrated sealing method is used in the mosaic area between the unitized curtain walls to form many air cavities. At the same time, the rain screen principle is used to gradually reduce the pressure to achieve the purpose of sealing and waterproofing. Due to the hidden drainage system built inside, the limited rainwater infiltrating the unitized curtain walls will be released to the outside of the system in a layered, cross-layered way. The unitized curtain wall system is reliably sealed to prevent rainwater leakage and air infiltration.
Support of Unitized Curtain Walls
The unitized curtain wall system accommodates differential motion between structures and thermal motion of the frame at the joints between each curtain wall unit. Anchorages for unitized curtain walls typically consist of proprietary components with three-way dimensional adjustability. Anchor points appear on each pair of vertical mullions along the edge of a slab or spandrel beam. Typically, a unitized system extends from a horizontal stacking joint at approximately table top height to an anchor point at the floor line above, and cantilevers across the floor to the next horizontal stacking joint. The stack joint is designed to resist lateral loads while the two floor anchors resist gravity and lateral loads.