1. The wind pressure resistance performance index of the curtain wall should be determined according to the standard wind load Wk on the curtain wall, and its index value should not be lower than Wk, and should not be less than 1.0kPa. The calculation of Wk should meet the requirements of GB 50009.
2. The relative deflection and absolute deflection of the supporting system and panel of the curtain wall cannot be too large under the action of the wind pressure resistance performance index value.
3. The wind pressure resistance performance of the open building curtain wall should meet the design requirements.
4. The grading index P3 of wind resistance performance shall comply with the provisions of 5.1.1.1 of this standard.
The positive and negative wind pressure of the glass curtain wall
The direction of the wind blows inside the curtain wall, which is negative pressure.
The outdoor pressure of the glass curtain wall is higher than the indoor pressure of the glass curtain wall.
The direction of the wind blows outside the curtain wall, which is positive pressure.
