How to Handle Strong Winds for Prefabricated Houses

Prefabricated houses need to be comprehensively managed in terms of construction, design, maintenance, and emergency management during strong wind conditions to ensure safety and structural stability.

I. Preventive Measures During Construction

1. Meteorological Monitoring and Early Warning
   Construction sites should be equipped with anemometers and wind vanes to monitor wind speed in real-time. When wind speed reaches or exceeds Level 5 (8.0-10.7 m/s), high-altitude operations should be immediately suspended to prevent displacement or overturning of components during lifting or installation due to wind forces. For example, at Level 6 winds (10.8-13.8 m/s), a single prefabricated exterior wall panel may detach due to wind forces of several hundred Newtons perpendicular to the panel surface.

2. Component Installation Reinforcement
   When lifting prefabricated components (such as concrete wall panels and composite slabs), temporary fixing measures should be taken, such as using support frames or cables, to prevent detachment caused by wind forces. Additionally, optimize the timing of grouting operations at joints to avoid accelerated grout solidification due to strong winds, which could lead to voids or cracks.

3. Safety Inspection of Lifting Equipment
   Regularly inspect the stability of lifting arms on crawler cranes, truck cranes, and other equipment to ensure that wind speeds do not exceed the allowable values for the equipment (such as the critical wind speed for lifting arm bending). Maintain lifting gear such as steel cables and hooks to prevent wear or fatigue fractures.

II. Wind Resistance Optimization During Design

1. Structural and Material Selection
   Use high-strength materials (such as reinforced concrete) and appropriately increase wall thickness to enhance overall stability. Improve house rigidity and reduce deformation under wind forces by employing prestressing techniques or externally bonded steel reinforcement at node connections.

2. Building Form and Fixing Methods
   Design regularized shapes to reduce wind concentration effects caused by edges and corners. Use ground anchors to secure the house to the ground, preventing displacement or overturning due to strong winds. Install vents to balance internal and external air pressure differences, reducing wind impact pressure on the structure.

III. Emergency Management During Strong Winds

1. Personnel Safety Protection
   Construction personnel should avoid high-altitude operations and wear safety helmets, goggles, and other protective gear to reduce the risk of injury from flying sand, gravel, or debris.

2. Temporary On-Site Reinforcement
   Use sandbags to block vulnerable areas such as glass doors on the windward side to prevent breakage. Suspend elevator operations and cordon off areas at risk of falling objects to avoid secondary disasters.

3. Protection of Materials and Equipment
   Secure items on terraces and balconies to prevent them from falling and causing injury. Check that doors and windows in equipment rooms are closed and ensure that emergency equipment such as generators is in standby mode to guarantee power supply.

IV. Post-Wind Management

Clear obstacles such as fallen trees and billboards, and inspect the house structure for damage (such as wall cracks or loose connections). Visit affected homeowners to assist in repairing damaged areas and restoring normal use as soon as possible.