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Code-check of concrete block according to Russian standards

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Concrete in compression

Concrete in compression under the base plate is checked according to SP 63.13330.2012, Cl. 8.1.44 - Calculation of reinforced concrete elements for local compression:

N \le \psi R_{b,loc} A_{b,loc}

where:

$N - local compressive force from an external load$
$ψ - factor equal to 0.75 in case of non-uniform distribution of the local load across the bearing surface$
$R b,loc = φ b R b - design compressive resistance of concrete in case of the local impact of compressive force$
$\varphi_b = 0.8 \sqrt{\frac{A_{b,max}}{A_{b,loc}}}$
$R b = R bn / γ b - design value of concrete axial compressive resistance$
$R bn - normative axial compressive resistance of concrete$
$γ b = 1.3 - reliability factor for concrete under compression; editable in Code setup$
$A b,loc - application area of the compressive force (bearing area surface) determined by finite element method as area in contact between the base plate and concrete block$
A_b,max – maximum design area established based on the following rules:
- $gravity centres of areas A b,loc and A b,max coincide$
- $maximum design area is geometrically similar to the application area; the slopes are 1 vertical to 2 horizontal.$

The shear action at the base plate is assumed to be transferred from the column to the concrete foundation by:

The tensile forces in anchors include prying forces and are determined by finite element analysis.

Anchors are not checked in the software.

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Code-check of concrete block according to Russian standards

This article is also available in

Concrete in compression under the base plate is checked according to SP 63.13330.2012, Cl. 8.1.44 - Calculation of reinforced concrete elements for local compression:

N \le \psi R_{b,loc} A_{b,loc}

where:

$N - local compressive force from an external load$
$ψ - factor equal to 0.75 in case of non-uniform distribution of the local load across the bearing surface$
$R b,loc = φ b R b - design compressive resistance of concrete in case of the local impact of compressive force$
$\varphi_b = 0.8 \sqrt{\frac{A_{b,max}}{A_{b,loc}}}$
$R b = R bn / γ b - design value of concrete axial compressive resistance$
$R bn - normative axial compressive resistance of concrete$
$γ b = 1.3 - reliability factor for concrete under compression; editable in Code setup$
$A b,loc - application area of the compressive force (bearing area surface) determined by finite element method as area in contact between the base plate and concrete block$
A_b,max – maximum design area established based on the following rules:
- $gravity centres of areas A b,loc and A b,max coincide$
- $maximum design area is geometrically similar to the application area; the slopes are 1 vertical to 2 horizontal.$

The shear action at the base plate is assumed to be transferred from the column to the concrete foundation by:

The tensile forces in anchors include prying forces and are determined by finite element analysis.

Anchors are not checked in the software.