#### DEFINING YIELD STRENGTH FOR NONPRESTRESSED ,

and the method of defining yield strength on calculated member capacity for reinforcing steel yield strengths of 60,000 and 80,000 psi (420 and 550 MPa) The beams (Fig 2a) had concrete strengths of 5,000 and 8,000 psi (34 and 55 MPa) Flexural reinforcement ratios ρ ranging from...