Method for calculating basic wind pressure of plastic greenhouse

For a long time, more and more experts have recommended the 3 sec extreme wind speed as the standard wind load design of greenhouses. Combined with the research into greenhouses at home and abroad, based on the characteristics of the plastic tunnel, the 3 sec extreme wind speed is used as the basis for calculating the reference wind pressure, which is calculated according to the recent 30 year 3 sec extreme wind speed data. The data shows that 3 sec extreme wind speed is between 19-50 m/sec and the basic wind pressure value is between 0.2-1.53 kN/m super(2). Moreover, the basic wind pressure is calculated by the date of which the standard height is 10 m, but the plastic tunnel height is between 4-5 m, so when calculating the plastic tunnel wind load, the basic wind pressure value referencing the load code for the design of building structures (GB50009-2012) should be reduced.