If fy is the yield stress in steel and Es is the Young's modulus of elasticity of steel, then the maximum strain in tension reinforcement at failure should NOT be less than:
1
\(\frac{f_y}{1.15E_s} - 0.02\)
2
\(\frac{f_y}{1.15E_s} + 0.002\)
3
\(\frac{f_y}{1.15E_s} + 0.02\)
4
\(\frac{f_y}{1.15E_s} - 0.002\)