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formula_3_18

codes.eurocode.en_1992_1_1_2004.chapter_3_materials.formula_3_18

Formula 3.18 from EN 1992-1-1:2004: Chapter 3 - Materials.

Classes:

codes.eurocode.en_1992_1_1_2004.chapter_3_materials.formula_3_18.Form3Dot18CompressiveStressConcrete 

Form3Dot18CompressiveStressConcrete(f_cd: MPA)

Bases: Formula

Class representing formula 3.18 for the calculation of compressive stress in concrete using stress-strain diagram of figure 3.3.

[\(\sigma_c\)] Compressive stress in concrete using stress-strain diagram of figure 3.3 [\(MPa\)].

EN 1992-1-1:2004 art.3.1.7(1) - Formula (3.18)

Parameters:

  • f_cd (MPA) –

    [\(f_{cd}\)] Design value compressive strength concrete [\(MPa\)].

Returns:

  • None –
Source code in blueprints/codes/eurocode/en_1992_1_1_2004/chapter_3_materials/formula_3_18.py 
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def __init__(
    self,
    f_cd: MPA,
) -> None:
    r"""[$\sigma_c$] Compressive stress in concrete using stress-strain diagram of figure 3.3 [$MPa$].

    EN 1992-1-1:2004 art.3.1.7(1) - Formula (3.18)

    Parameters
    ----------
    f_cd : MPA
        [$f_{cd}$] Design value compressive strength concrete [$MPa$].

    Returns
    -------
    None
    """
    super().__init__()
    self.f_cd = f_cd

codes.eurocode.en_1992_1_1_2004.chapter_3_materials.formula_3_18.Form3Dot18CompressiveStressConcrete.latex 

latex(n: int = 3) -> LatexFormula

Returns LatexFormula object for formula 3.18.

Source code in blueprints/codes/eurocode/en_1992_1_1_2004/chapter_3_materials/formula_3_18.py 
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def latex(self, n: int = 3) -> LatexFormula:
    """Returns LatexFormula object for formula 3.18."""
    return LatexFormula(
        return_symbol=r"\sigma_c",
        result=f"{self:.{n}f}",
        equation=r"f_{cd}",
        numeric_equation=rf"{self.f_cd:.{n}f}",
        comparison_operator_label="=",
    )