बेलनाकार पाइपों (cylindrical pipes) के मामले में पूर्व-प्रतिबलित कंक्रीट (Prestressed concrete) अत्यधिक वांछनीय होता है जब वे निम्नलिखित के अधीन होते हैं:

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?