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Arched Roof C&C Wind Loads

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I think most people did not receive my original question.  Here is a
repost:

> In Figure 6.8 of ASCE 7-02 (the same information is also in Table 6.8
> of ASCE 7-98), main wind force resisting pressure coefficients are
> shown for arched roofs.  Footnote #4 says that for all areas of the
> arched roof other than the perimeter, components and cladding loads
> should be the MWFRS loads shown in the table multiplied by 0.87.  
> 
> Can anyone explain why components and cladding loads for arched roofs
> are less than MWFRS loads?  
> 
> The commentary doesn't say much about it other than the data has
> remained unchanged since 1972, so I seriously doubt that it's a typo.
> 
> Thanks,
> 
> David Dickey
> Lexington, KY
> 
> 
> 
> 
> 
> 

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