एक पूर्व-प्रतिबलित कंक्रीट अवयव (prestressed concrete member) में निम्नलिखित में से कौन सा सामग्री संयोजन आवश्यक और अत्यधिक बेहतर माना जाता है?

For axial load and combined biaxial bending moment in the iteration formula used by IS 456, αn is based on Pu / Puz, where Puz is given by:

A compression member is considered to be short if its slenderness ratio satisfies which of the following conditions?