3107F.2.4 Stress-Strain Models
The stress-strain model and terms for reinforcing and structural steel are shown in Figure 31F-7-2.
The stress-strain model of Blakeley and Park [7.4] may be used for prestressed steel. The model and terms are illustrated in Figure 31F-7-3.
Alternative stress-strain models are acceptable if adequately documented and supported by test results, subject to Division approval.