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Exterior Stud Wall Deflection

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1997 UBC 1611.5 sets "interior" wall deflection limits of L/240 for brittle
finishes and L/120 for flexible finishes (for 5 psf minimum out-of-plane

Given an "exterior" sawn lumber king stud (actually 3-2x6's) that is 19'
tall with 5' tributary width of wind loading (80 mph wind, exposure B,
stucco finish).  If the calculations show that combined axial & bending is
satisfied ... would you check the stud's deflection as well? 

What kind of deflection limitation do you think is enforceable  ... since
the code does not appear to specifically address deflection limitations of
exterior walls?

Thank you for any input.

Steve Hiner