The state of two-dimensional stresses acting on a concrete lamina consists of a direct tensile stress as σx = 1.5 N/mm2 and shear stress τ = 1.20 N/mm2, when cracking of concrete is Just impending. The permissible tensile strength of the concrete is

The state of two-dimensional stresses acting on a concrete lamina cons

1.	The state of two-dimensional stresses acting on a concrete lamina consists of a direct tensile stress as σx = 1.5 N/mm2 and shear stress τ = 1.20 N/mm2, when cracking of concrete is Just impending. The permissible tensile strength of the concrete is
A.	1.50 N/mm2
B.	2.17 N/mm2
C.	2.08 N/mm2
D.	2.29 N/mm2
Answer» C. 2.08 N/mm2