IS-800 के अनुसार, निम्नलिखित में से कौन सी स्थिति स्थायित्व (durability) के विचारों से जुड़ी सीमा स्थिति (limit state) नहीं है?

Which of the following is the most common type of structural failure in a slender steel member subjected to compression?

In a tension member, if one or more than one rivet holes are off the line (staggered), the failure of the member depends on: