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RE: ST - Allowable stresses for steel tees

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Thanks to those who responded to my question regarding flexural strength of 
tees.  The gold star goes to Tony Powers who referred me to AISC's Engineering 
Journal, Second quarter, 1992, "Flexural Strength of WT Sections".  This 
article states "The design of these sections for flexural loads was not 
specifically addressed in the ASD Specification.  Not until the publication of 
the LRFD Specification was flexural loading of these sections directly 
addressed."  AISC-LRFD addresses flexural strength of tees in section F1.5.  
The author of the above article recommends using the LRFD formula (F1-15) and 
incorporating a safety factor of 1.67 for ASD design, to check lateral 
buckling strength of the web in compression.  A strength limit of 0.60Fy is 
recommended for compressive stress on the web.  (The article also recommends 
relaxing the width/thickness ratio for web stems in B5.) 
 
Roger Turk referred to page 1-53 in the AISC-ASD Manual.  This page does refer 
to section E2 for allowable compressive stress for flexural buckling.  
However, it is not clear exactly how to apply E2 to a tee web only partially 
in compression (for K & r values).  Thus the paper is correct that it is not 
"directly" addressed in ASD.