1. Ultimate limit state bending calculations (article 6.1 of EC2)

• Rectangular section bd.

d, useful height; d ' distance from any compressed steel to the most compressed fiber.

• Concrete class up to C 50/60: $f_{c k} ⩽ 50$ MPa – Steel B 500.

• Relative deformations expressed in ‰.

The formulas given below correspond to the use of the parabola-rectangle diagram [ , figure 3].

1.1 Search for steel sections

a) Equation for the inclined branch of the steel design diagram [ ]. , figure 7]

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Ultimate limit state bending calculations (article 6.1 of EC2)