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Required strength is calculated in accordance with the factored load combinations in Load Factors and Combinations title.

According to ACI 9.4.2.1 and 9.4.3.1, for beams built integrally supports, M_u and V_u at the support can be be calculated at the face of support.

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Strength reduction factors ϕ is determined according to using ACI Table 21.2.2. Interaction between load effects is considered.

For cases with P_u< 0.10f_c’A_g, axial forces are not effective in nominal flexural strength M_n. If P_u< 0.10f_c’A_g, nominal flexural strength M_n with zero compression is calculated in accormance with Flexural Strength title. If P_u≥ 0.10f_c’A_g, combined axial and flexural strength, P_n and M_n, are calculated in accordance with Axial strength or Combined Flexural and Axial Strength title.

Nominal shear strength, V_n, is calculated in accordance with One-Way Shear Strength title.

Nominal torsional moment strength, T_n, is calculated in accordance with Torsional Strength (v12) title.

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