ISO Releases Standard for Calculating Structural
July 8, 2009
The International Organization for Standardization (ISO) has published
ISO 4354, Wind Actions on Structures, designed to help ensure
the reliability of structures in areas exposed to strong winds and
cyclones. The standard describes the actions of wind on structures
and specifies methods for calculating characteristic values of wind
"Perhaps one of the biggest advantages of ISO 4354 is that
it allows you to bridge the gaps of all wind loading codes around
the world," says Prof. William Melbourne, convenor of the working
group that developed the standard. "The standard provides methodology
for calculating wind loads on structures, some of which have never
been available in this form before. It cancels and replaces the
first edition of the standard, originally published in 1997, with
a full technical revision."
The standard covers design methodologies for three main storm types:
- Synoptic winds (large-scale winds);
- Thunderstorms; and
- Topical cyclones (hurricanes, typhoons).
It provides the basic methods for determining wind loading analytically
for simple structures and guidance for the design of more complex
According to ISO's announcement, because wind is just one of the
elements to be considered when designing structures, in addition
to, for example, the weight of the structure, load of occupants
or seismic actions, ISO 4354 is also intended as a bridge between
existing ISO International Standards dealing with the subject. This
standard can be used in conjunction with ISO 2394, General principles
on reliability for structures, as well as other ISO International
Standards on design of structures.
HERE for more information on the standard.
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