A) Given the following frame system, the Euler's critical load for the structure is: a) Pcr = π' ΕΙ (0.7h)² π' ΕΙ b) Pcr = ; c) None of the above. 2 (2h)2 P EJ, EA→∞ EJ, EA→00 EA→∞ B) The Galileo-Rankine-Navier strength criterion is: a) a criterion for brittle materials; b) a criterion for ductile materials; c) a criterion for both ductile and brittle materials. C) The centre of torque of a section: a) depends on the amount of torque applied on the section; b) depends on the amount of shear force applied on the section; c) always coincides with the centre of shear. P h h/2

A) Given the following frame system, the Euler's critical load for the structure is: a) Pcr = π' ΕΙ (0.7h)² π' ΕΙ b) Pcr = ; c) None of the above. 2 (2h)2 P EJ, EA→∞ EJ, EA→00 EA→∞ B) The Galileo-Rankine-Navier strength criterion is: a) a criterion for brittle materials; b) a criterion for ductile materials; c) a criterion for both ductile and brittle materials. C) The centre of torque of a section: a) depends on the amount of torque applied on the section; b) depends on the amount of shear force applied on the section; c) always coincides with the centre of shear. P h h/2