Installing a louvered pergola on a 50th-floor penthouse in Shanghai's Lujiazui district presents a set of challenges far removed from a ground-level backyard. In urban canyons, wind speeds are amplified, and the most dangerous force is not the downward gustt is Wind Uplift.
For the Lujiazui Skyline project, the Brealu engineering team deployed the BRE-220 system, specifically customized for high-altitude aerodynamic stability.
Solving the Uplift Challenge
Wind uplift occurs when fast-moving air passes over a rooftop, creating a low-pressure zone that literally tries to "suck" the pergola off the terrace. To combat this, we utilize Deep-Anchor Structural Bases and reinforced 150mm posts. Every bolt and anchor is calculated to withstand forces of up to 180km/h.
High-Rise Engineering Pack
- Wind Resistance
- Up to 180-220 km/h (Hurricane Grade)
- Anchoring System
- Chemical Bolt Deep-Anchoring (Hilti Certified)
- Blade Profile
- Aerodynamic Curved Louvers
- Height Class
- Certified for installations up to 200m
Aerodynamic Louver Profiles
The BRE-220's louvers are not flat slats; they are precision-curved aerodynamic profiles. When closed, they create a seal that minimizes air turbulence. When slightly open, they allow air to pass through in a controlled manner, neutralizing the pressure differential between the top and bottom of the system.
This "pressure relief" mechanism is crucial for high-rise survival, ensuring that the structure remains a tranquil sanctuary rather than a sail for the wind.