The wind resistance of doors and windows has always been a hot topic of discussion, as one of the functions of windows is to block the wind, especially in winter when cold winds blow or during stormy weather. So, how can we improve the wind resistance of casement windows?
Material Selection
If you are currently selecting window frame materials, it is recommended to choose materials that have high strength and are not easily deformed, such as high-quality aluminum alloy. Aluminum alloy has high strength and corrosion resistance; for example, in areas with acid rain, you don’t need to worry about corrosion damaging the windows. Furthermore, aluminum alloy can withstand significant wind loads, making it less likely to deform in high winds, thereby ensuring the overall stability and wind resistance of the window. This high-strength wind resistance also enhances safety; if the wind resistance is poor, there’s a risk that the window could fall, posing a danger. For example, many casement windows in high-rise buildings use high-strength aluminum alloy frames to resist strong winds. These aluminum frames are lightweight, which helps reduce the weight and pressure on higher floors.
In terms of glass selection, it is advisable to use tempered glass or laminated glass, which offer high strength and safety. Tempered glass has strong impact resistance, making it suitable for high-rise buildings, while also offering excellent wind resistance. The strength of tempered glass is several times that of ordinary glass, and it is less likely to shatter even under strong external impacts during windy conditions. Laminated glass consists of two or more sheets of glass with a special interlayer; even if the glass breaks, the fragments will stick together due to the interlayer, preventing injuries from flying glass and maintaining the overall seal of the window to keep out wind and sand. This type of glass is ideal for installations near the sea or in areas close to deserts.
Structural Design
In terms of structural design, casement windows can enhance sealing by adding multiple layers of sealing strips at the contact points between the sash and the frame, creating multiple barriers against the elements. This ensures that rainwater cannot seep through during rainy weather, and strong winds or sand cannot enter through gaps, effectively protecting indoor cleanliness and safety. When the window is closed, the sealing strips can tightly adhere to each other, preventing air and sand infiltration. For instance, some high-end casement windows are designed with three sealing strips, significantly improving sealing performance and wind resistance.
Optimizing the connection structure between the window frame and the wall is also essential. Using sealants and foam materials to fill and seal the gaps ensures that no wind can enter through the spaces between the window and the wall. Additionally, to improve the wind resistance of casement windows, designers can optimize the sash structure by creating rational shapes and sizes through precise physical design, ensuring that the window remains stable during opening and closing. For example, using larger sash sizes may require adding reinforcement ribs to the frame, enhancing overall strength and wind resistance.
For larger casement windows, a multi-sash combination approach can be employed to increase overall stability. By dividing a large window into multiple smaller sashes connected by hinges or connectors, this design allows for easier operation while reinforcing the window’s structure and improving wind resistance.
Improving the wind resistance of casement windows can also be achieved by enhancing hardware components. Choosing high-quality, heavy-duty hinges and other hardware is crucial, as these components are the key to securing the window assembly. For example, high-strength stainless steel hinges can withstand substantial wind loads, ensuring that the sash does not loosen or detach in high winds. Additionally, increasing the quantity and density of hardware components around the sash and at central locations can reinforce the connection between the sash and the frame, further improving overall wind resistance.
Drainage System Design
Enhancing the wind resistance of casement windows can also involve designing effective drainage channels and holes. A good drainage system protects windows from moisture and rust. Drainage channels and holes should be located at the bottom or side of the window frame to promptly direct rainwater outside, preventing water accumulation inside the frame, which could add weight and increase the wind load. The placement and size of drainage holes should be designed to prevent backflow during windy weather. Installing wind-resistant drainage valves can also help; these valves close automatically under high external wind pressure to prevent wind from entering through the drainage holes, while allowing for efficient drainage when needed.
