Flexural strength theory is reviewed and a computer program for flexural analysis by the iterative strain compatibility method is presented. It is available from the PCI for IBM PC/XT and AT microcomputers and compatibles. Secondly, a new noniterative approximate method for hand calculation of the stress f P5 in prestressed tendons at ultimate flexure is presented. It is applicable to composite and non composite sections of any shape with any number of steel layers, and any type of ASTM steel at any level of effective prestress. Parametric and comparative studies indicate the proposed method is more accurate and more powerful than other approximate methods. Numerical examples are provided and proposed ACI 318-83 Code and Commentary revisions are given.
