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one hour exterior wall

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in order to have  3 ft set back for CBC 2007 

the exterior walls must be one hour exterior wall

which option is better

1- having dry wall over the studs direct and after that add plywood shear walls

2- having dry wall over plywood shear walls

and the dry wall must be water resistance or add water proof for dry wall

thanks  for input

Dave A., P.E.