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Developed in response to state and national
building code requirements to provide design pressures for
components and cladding, Structures International offers “4WIND”,
a simple and inexpensive solution to the complex calculations
currently required by both the Florida Building Code and the International
Building Code.
Due to revisions to the wind load calculations contained
within the 2010 edition of the ASCE 7 publication "Minimum Design Loads for
Buildings and Other Structures", "4WIND" has been completely redesigned as an
Excel based program and incorporates many new features including a wizard that
will guide you through the calculation procedure.
The Florida Building Code and
International Building Code require the following five items
be included with all construction drawings:
- Basic wind speed (mph)
- Risk category
- Wind exposure category
- Internal pressure coefficients
- Pressures on components & cladding
While the first four items are easily determined, the fifth is
not.
Calculating pressures on components and cladding is very time-consuming.
The formulas and charts commonly used in calculating these values
(published in the ASCE 7 and the building codes) require interpolation
and engineering judgment to determine the values of individual
coefficients to be used in the various calculations.
Structures International offers easy-to-use tools
developed by licensed engineers that produce a simple report that
can be incorporated into your drawings as part of your submittal. “4WIND”, a
significant time saver that allows you to provide your clients with accurate and
prompt design pressures! With this tool, you can quickly determine the impact of
wind-related variables and calculate wind pressures on components and cladding
using the actual equations of the curves shown in the ASCE 7 charts. The results are as accurate
as possible and therefore require no interpolation, and ALL THIS
with just a few basic input requirements for each component.

Software
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