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formula_5_27

codes.eurocode.en_1992_1_1_2004.chapter_5_structural_analysis.formula_5_27

Formula 5.27 from EN 1992-1-1:2004: Chapter 5 - Structural Analysis.

Classes:

codes.eurocode.en_1992_1_1_2004.chapter_5_structural_analysis.formula_5_27.Form5Dot27EffectiveDesignModulusElasticity 

Form5Dot27EffectiveDesignModulusElasticity(e_cd: MPA, phi_ef: DIMENSIONLESS)

Bases: Formula

Class representing formula 5.27 for the calculation of the effective design modulus of elasticity, [\(E_{cd,eff}\)].

[\(E_{cd,eff}\)] Effective design modulus of elasticity.

EN 1992-1-1:2004 art.5.8.6(3) - Formula (5.27)

Parameters:

  • e_cd (MPA) –

    [\(E_{cd}\)] is the design modulus of elasticity of concrete according to 5.8.6 (3).

  • phi_ef (DIMENSIONLESS) –

    [\(\phi_{ef}\)] is the effective creep coefficient; same value as for columns may be used.

Source code in blueprints/codes/eurocode/en_1992_1_1_2004/chapter_5_structural_analysis/formula_5_27.py 
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def __init__(self, e_cd: MPA, phi_ef: DIMENSIONLESS) -> None:
    r"""[$E_{cd,eff}$] Effective design modulus of elasticity.

    EN 1992-1-1:2004 art.5.8.6(3) - Formula (5.27)

    Parameters
    ----------
    e_cd : MPA
        [$E_{cd}$] is the design modulus of elasticity of concrete according to 5.8.6 (3).
    phi_ef : DIMENSIONLESS
        [$\phi_{ef}$] is the effective creep coefficient; same value as for columns may be used.
    """
    super().__init__()
    self.e_cd = e_cd
    self.phi_ef = phi_ef

codes.eurocode.en_1992_1_1_2004.chapter_5_structural_analysis.formula_5_27.Form5Dot27EffectiveDesignModulusElasticity.latex 

latex(n: int = 3) -> LatexFormula

Returns LatexFormula object for formula 5.27.

Source code in blueprints/codes/eurocode/en_1992_1_1_2004/chapter_5_structural_analysis/formula_5_27.py 
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def latex(self, n: int = 3) -> LatexFormula:
    """Returns LatexFormula object for formula 5.27."""
    return LatexFormula(
        return_symbol=r"E_{cd,eff}",
        result=f"{self:.{n}f}",
        equation=r"\frac{E_{cd}}{1 + \phi_{ef}}",
        numeric_equation=rf"\frac{{{self.e_cd:.{n}f}}}{{1 + {self.phi_ef:.{n}f}}}",
        comparison_operator_label="=",
    )