A steel column of ISHB 350 @72.4 kg/m is subjected to a factored axial compressive load of 2000 kN. The load is transferred to a concrete pedestal of grade M20 through a square base plate. Consider bearing strength of concrete as $0.45f_{ck}$, where $ f_{ck} $ is the characteristic strength of concrete. Using limit state method and neglecting the self weight of base plate and steel column, the length of a side of the base plate to be provided is
Two steel columns P (length L and yield strength f_{y}=250 MP_{a}) and Q (length 2L and yield strength f_{y}=500 MP_{a}) have the same cross-sections and end-conditions. The ratio of buckling load of column P to that of column Q is:
The square root of the ratio of moment of inertia of the cross section to its cross sectional area is called
Consider the following statements for a compression member:
I. The elastic critical stress in compression increases with decrease in slenderness ratio. II. The effective length depends on the boundary conditions at its ends. III. The elastic critical stress in compression is independent of the slenderness ratio. IV. The ratio of the effective length to its radius of gyration is called as slenderness ratio.
The TRUE statements are
A steel flat of rectangular section of size 70 × 6 mm is connected to a gusset plate by three bolts each having a shear capacity of 15 kN in holes having diameter 11.5 mm. If the allowable tensile stress in the flat is 150 MPa, the maximum tension that can be applied to the flat is