Slope

Eurocode 7 (2024)

Eurocode 7 2024 — VC3 + M2, Fundamental

EN 1997-3:2025Revision 2Required FoS ≥ 1

Use it in Slope

In a design, choose it under Analyze → Design factor set, and the PDF report runs it too.

Checked against the standard · Not yet validated

Known limitations

  • Consequence classes CC0 and CC4 have no kM (EN 1997-1:2024 Table 4.9); CC4 needs additional provisions.
  • γM·kM is never below 1.0 (Slope convention): critical-state and residual strengths under CC1 use 1.0, not 0.99.
  • Variable water (γQw = 1.15) is not modelled; water follows the soil weight (γGw = 1.0).
  • γQ = 1.3 is used for every variable load; bridge traffic takes 1.15 or 1.25 (EN 1990 Table A.2.10).
  • Tendon, bar, plate, steel-strip and steel-grid rupture and pile shear are structural (EN 1992/1993) and are not factored here.

Values

Actions

Soil weightγUnfavorable×1.00
Favorable×1.00
Permanent loadγGUnfavorable×1.00
Favorable×1.00
Variable loadγQUnfavorable×1.30
Favorable×0.00
Seismic coefficientγE×0.00

Resistance

Earth / global resistanceγRe÷1.00

Materials

Effective cohesionγc′÷1.25
Friction (tanφ′)γφ÷1.25
Friction (critical state)γφ,cs÷1.10
Friction (residual)γφ,r÷1.10
Cohesion (residual)γc,r÷1.10
Consequence factor kM — CC1kM×0.90
Consequence factor kM — CC2kM×1.00
Consequence factor kM — CC3kM×1.10
Undrained strength (cu)γcu÷1.40
Shear strength (other models)—÷1.25

Reinforcement

Anchor — pull-outγpo÷1.10
Nail — pull-outγpo÷1.25
Geosynthetic — ruptureγt÷1.25
Geosynthetic — pull-outγpo÷1.25
Steel strip — pull-outγpo÷1.25
Steel grid — pull-outγpo÷1.25

Sources

Document: EN 1997-3:2025

Actions

FactorValueSource
Soil weight — unfavorable×1.004.6.3(1), Table 4.2, VC3 + M2, PDF p56 · Not yet validated
Soil weight — favorable×1.004.6.3(1), Table 4.2, VC3 + M2, PDF p56 · Not yet validated
Permanent load — unfavorable×1.004.6.3(1), Table 4.2, VC3 + M2, PDF p56 · Not yet validated
Permanent load — favorable×1.004.6.3(1), Table 4.2, VC3 + M2, PDF p56 · Not yet validated
Variable load — unfavorable×1.30EN 1990:2023, A.1.8, Table A.1.8, VC3 γQ, PDF p75 · Not yet validated
Variable load — favorable×0.004.6.3(1), Table 4.2, VC3 + M2, PDF p56 · Not yet validated
Seismic coefficient×0.004.6.3(1), Table 4.2, VC3 + M2, PDF p56 · Not yet validated

Materials

FactorValueSource
Effective cohesion÷1.25EN 1997-1:2024, 4.4.1.3, Table 4.8, M2 γc,p, PDF p46 · Not yet validated
Friction (tanφ′)÷1.25EN 1997-1:2024, 4.4.1.3, Table 4.8, M2 γtanφ,p, PDF p46 · Not yet validated
Friction (critical state)÷1.10EN 1997-1:2024, 4.4.1.3, Table 4.8, M2 γtanφ,cs, PDF p46 · Tested against an independent reference
Friction (residual)÷1.10EN 1997-1:2024, 4.4.1.3, Table 4.8, M2 γtanφ,r, PDF p46 · Not yet validated
Cohesion (residual)÷1.10EN 1997-1:2024, 4.4.1.3, Table 4.8, M2 γc,r, PDF p46 · Not yet validated
Consequence factor kM — CC1×0.90EN 1997-1:2024, 4.4.1.1(5)-(6), Table 4.9, PDF p47 · Not yet validated
Consequence factor kM — CC2×1.00EN 1997-1:2024, 4.4.1.1(5)-(6), Table 4.9, PDF p47 · Not yet validated
Consequence factor kM — CC3×1.10EN 1997-1:2024, 4.4.1.1(5)-(6), Table 4.9, PDF p47 · Not yet validated
Undrained strength (cu)÷1.40EN 1997-1:2024, 4.4.1.3, Table 4.8, M2 γcu, PDF p46 · Not yet validated
Shear strength (other models)÷1.25EN 1997-1:2024, 4.4.1.3(7), Table 4.8, M2 γτf / γτr, PDF p46 · Not yet validated

Resistance

FactorValueSource
Earth / global resistance÷1.004.6.3(1), Table 4.2, VC3 + M2, PDF p56 · Not yet validated

Reinforcement

FactorValueSource
Anchor — pull-out÷1.108.6.4, Table 8.2, γRa,ULS, PDF p143 · Not yet validated
Nail — pull-out÷1.2510.6.2, Table 10.3, γR,po, PDF p195 · Slope convention · Not yet validated — The resistance-factor pull-out value is used inside a material-factor overall-stability analysis (UK draft NA NA.2.66).
Geosynthetic — rupture÷1.259.6.2.1, Formula (9.17), γM,gs, PDF p170 · Not yet validated
Geosynthetic — pull-out÷1.259.6.3, Table 9.4, γR,po, PDF p174 · Slope convention · Not yet validated — The resistance-factor pull-out value is used inside a material-factor overall-stability analysis (UK draft NA Table NA.14 note C).
Steel strip — pull-out÷1.259.6.3, Table 9.4, γR,po, PDF p174 · Slope convention · Not yet validated — The resistance-factor pull-out value is used inside a material-factor overall-stability analysis (UK draft NA Table NA.14 note C).
Steel grid — pull-out÷1.259.6.3, Table 9.4, γR,po, PDF p174 · Slope convention · Not yet validated — The resistance-factor pull-out value is used inside a material-factor overall-stability analysis (UK draft NA Table NA.14 note C).