Design Moment Strength Calculation of Singly RC Beam – Reinforced Concrete Formliner Design, This is a detailed example problem that describes the process for calculating the design moment strength of a singly reinforced concrete beam according the ACI Code. If you have a feel for this topic, I recommend that you skip around since the video gets a little detailed on background info.
i) How to draw the strain and stress profile at ultimate (0:31)
ii) Force equilibrium to calculate neutral axis depth (4:08)
iii) Verifying assumptions (i.e. verifying steel yield) and determining phi (8:28)
iv) Calculate nominal moment and design moment (11:56),