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GB/T 28591-2012Wind scale (English PDF)

风力等级

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

June 29, 2012

Implementation date

August 1, 2012

Scope

GB/T 28591-2012 is the English-translated version of 风力等级.

GB/T 28591-2012 is the Chinese standard "Wind scale". Its scope clause reads: This standard specifies the principle of wind division and wind power rating. This standard applies to wind observation, forecasting and early warning and other business work and scientific research, as well as other industries and wind related areas. Its clauses include terms and definitions; wind level.

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Document preview — GB/T 28591-2012

National Standard of the People's Republic of China

ICS: 07.060
Classification: A 47

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 terms and definitions
2.1 Wind speed
2.2 Wind windforce
3 wind level
3.1 Principles of division
3.2 Classification

1 Scope

This standard specifies the principle of wind division and wind power rating.

This standard applies to wind observation, forecasting and early warning and other business work and scientific research, as well as other industries and wind related areas.

2 terms and definitions

The following terms and definitions apply to this document.

2.1 Wind speed

The horizontal distance of air movement per unit time.

Note. Commonly used units in meters per second (m/s), can also be used km/hour (km/h) or sea/hour (knot).

2.2 Wind windforce

Wind strength, weather commonly used wind level, said the international commonly used Pu Fu Feng level said.

Note. The Pu Fung style was developed by Britishman Luff (Francis Beaufort, 1774-1857) in 1805 and expanded in 1946. Pu Fufeng

Refer to Appendix A for the rating level.

3 wind level

3.1 Principles of division

According to the standard weather observation field 10m height of the wind speed division.

3.2 Classification

The wind level is divided into 18 grades in turn. See Table 1 for details.

Table 1 Wind level classification table

Wind/class wind speed/(m/s) wind/class wind speed/(m/s)

0 0.0 to 0.2 9 20.8 to 24.4

1 0.3 ~ 1.5 10 24.5 ~ 28.4

2 1.6 ~ 3.3 11 28.5 ~ 32.6

3 3.4 ~ 5.4 12 32.7 ~ 36.9

4 5.5 to 7.9 13 37.0 to 41.4

5 8.0 to 10.7 14 41.5 to 46.1

6 10.8 ~ 13.8 15 46.2 ~ 50.9

7 13.9 ~ 17.1 16 51.0 ~ 56.0

8 17.2 ~ 20.7 17 >=56.1 […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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