# A.3.3.5 Partial resistance factors (γ_{R}) for retaining structures

(1)P For retaining structure and verifications of structural (STR) and geotechnical (GEO) limit states, set *R1*, *R2* or *R3* of the following partial factors on resistance (γ_{R}) shall be applied:

- γ
_{R;v}on bearing capacity; - γ
_{R;h}on sliding resistance; - γ
_{R;e}on earth resistance.

NOTE The values to be ascribed to γ_{R;v}, γ_{R;h} and γ_{R;e} for use in a country may be found in its National annex to this standard. The recommended values for the three sets *R1*, *R2* and *R3* are given in table A.13.

_{R}) for retaining structures

Resistance | Symbol | Set | ||

R1 |
R2 |
R3 |
||

Bearing capacity | γ_{R;v} |
1,0 | 1,4 | 1,0 |

Sliding resistance | γ_{R;h} |
1,0 | 1,1 | 1,0 |

Earth resistance | γ_{R;e} |
1,0 | 1,4 | 1,0 |

A.3.3.6 Partial resistance factors (γ_{R}) for slopes and overall stability

(1)P For slopes and overall stability and verifications of structural (STR) and geotechnical (GEO) limit states a partial factor on ground resistance (γ_{R;e}) shall be applied.

NOTE The value to be ascribed to γ_{R;e} for use in a country may be found in its National annex to this standard. The recommended value for the three sets *R1*, *R2* and *R3* is given in table A.14.

_{R}) for slopes and overall stability

Resistance | Symbol | Set | ||

R1 |
R2 |
R3 |
||

Earth resistance | γ_{R;e} |
1,0 | 1,1 | 1,0 |

## A.4 Partial factors for uplift limit state (UPL) verifications

(1)P For the verification of uplift limit state (UPL) the following partial factors on actions (γ_{F}) shall be applied:

- γ
_{G;dst}on destabilising unfavourable permanent actions; - γ
_{G;stb}on stabilising favourable permanent actions; - γ
_{Q;dst}on destabilising unfavourable variable actions.

NOTE The values to be ascribed to γ_{G;dst}, γ_{G;stb} and γ_{Q;dst} for use in a country may be found in its

National annex to this standard. The recommended values are given in table A.15.

_{F})

Action | Symbol | Value |

Permanent Unfavourable ^{a}Favourable ^{b} |
γ _{G;dst}γ _{G;stb} |
1,0 0,9 |

Variable Unfavourable ^{a} |
γ _{Q;dst} |
1,5 |

^{a} Destabilising;^{b} Stabilising |

(2)P For the verification of uplift limit sate (UPL) the following partial factors on soil parameters (γ_{M}) shall be applied:

- γ
_{φ'}on the tangent of the angle of shearing resistance; - γ
_{c'}on effective cohesion; - γ
_{cu}on undrained shear strength; - γ
_{s;t}on tensile pile resistance; - γ
_{R}on anchorage resistance.

NOTE The values to be ascribed to γ_{φ'}, γ_{c'}, γ_{cu}, γ_{qu}, and γ_{γ} for use in a country may be found in its National annex to this standard. The recommended values are given in table A.16.

_{M})

Soil parameter | Symbol | Value |

Angle of Shearing resistance ^{a} |
γ_{φ'} |
1,25 |

Effective cohesion | γ_{c'} |
1,25 |

Undrained shear strength | γ_{cu} |
1,40 |

Tensile pile resistance | γ_{s;t} |
1,40 |

Anchorage | γ_{R} |
1,40 |

^{a} This factor is applied to tan φ' |

## A.5 Partial factors for hydraulic heave limit state (HYD) verification

(1)P For the verification of hydraulic heave limit state (HYD) the following partial factors on actions (γ_{F}) shall be applied:

- γ
_{G;dst}on destabilising unfavourable permanent actions; - γ
_{G;stb}on stabilising favourable permanent actions; - γ
_{Q;dst}on destabilising unfavourable variable actions.

NOTE The values to be ascribed to γ_{G;dst}, γ_{G;stb} and γ_{Q;dst} for use in a country may be found in its

National annex to EN 1990:2002. The recommended values are given in table A.17.

_{F})

Action | Symbol | Value |

Permanent Unfavourable ^{a}Favourable ^{b} |
γ _{G;dst}γ _{G;stb} |
1,35 0,90 |

Variable Unfavourable ^{a} |
γ _{Q;dst} |
1,50 |

^{a} Destabilising^{b} Stabilising |