The target mean strength f_cm for concrete mix design obtained from the characteristic strength (f_ck) and standard deviation $$\sigma$$, as defined in IS:456-2000, is

The modulus of elasticity, E = 5000$$\sqrt{{\mathrm f}_\mathrm{ck}}$$ where f_ck is the characteristic compressive strength of concrete, specified in IS:456-2000 is based on

For the state of plane stress (in $$MPa$$) shown in the figure below, the maximum shear stress (in $$MPa$$) is ___________

The values of axial stress $$\left( \sigma \right)$$ in $$kN/{m^2},$$ bending moment $$(M)$$ in $$kNm,$$ and shear force $$(V)$$ in $$kN$$ acting at point $$P$$ for the arrangement shown in the figure are respectively.