Eurocode 7
Eurocode 7 — Design Approach 2
EN 1997-1:2004+A1:2013Revision 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 · Slope convention · Tested against an independent reference
The driving effect is the Slope reference effect Σ W·sinα per source, the same for every method (G1).
Known limitations
- EN 1997-1 does not say how γE applies when permanent and variable effects mix; Slope factors each source's share of the reference effect.
- γR;e divides the soil's shear resistance only; reinforcement keeps its own factor (ec7-da2-reinforcement.md).
- Tendon, bar, plate, nail, layer and pile capacities are not factored: EN 1997-1 gives a factor only for an anchor's geotechnical pull-out (Table A.19).
Values
Actions
| Soil weightγ | Unfavorable | ×1.00 |
| Favorable | ×1.00 | |
| Permanent loadγG | Unfavorable | ×1.00 |
| Favorable | ×1.00 | |
| Variable loadγQ | Unfavorable | ×1.00 |
| Favorable | ×0.00 | |
| Seismic coefficientγE | ×1.00 | |
Effects of actions
| Soil weight effectγE | ×1.35 | |
| Permanent load effectγE | Unfavorable | ×1.35 |
| Favorable | ×1.00 | |
| Variable load effect — unfavorableγE | ×1.50 | |
Resistance
| Earth / global resistanceγRe | ÷1.10 | |
Materials
| Effective cohesionγc′ | ÷1.00 | |
| Friction (tanφ′)γφ | ÷1.00 | |
| Undrained strength (cu)γcu | ÷1.00 | |
| Shear strength (other models)— | ÷1.00 | |
Reinforcement
| Anchor — pull-outγpo | ÷1.10 | |
Sources
Document: EN 1997-1:2004+A1:2013
Actions
| Factor | Value | Source |
|---|---|---|
| Soil weight — unfavorable | ×1.00 | 2.4.7.3.4.3 NOTE 2 · Slope convention · Tested against an independent reference — The driving effect is the Slope reference effect Σ W·sinα per source, the same for every method (G1). |
| Soil weight — favorable | ×1.00 | 2.4.7.3.4.3 NOTE 2 · Slope convention · Tested against an independent reference — The driving effect is the Slope reference effect Σ W·sinα per source, the same for every method (G1). |
| Permanent load — unfavorable | ×1.00 | 2.4.7.3.4.3 NOTE 2 · Slope convention · Tested against an independent reference — The driving effect is the Slope reference effect Σ W·sinα per source, the same for every method (G1). |
| Permanent load — favorable | ×1.00 | 2.4.7.3.4.3 NOTE 2 · Slope convention · Tested against an independent reference — The driving effect is the Slope reference effect Σ W·sinα per source, the same for every method (G1). |
| Variable load — unfavorable | ×1.00 | 2.4.7.3.4.3 NOTE 2 · Slope convention · Tested against an independent reference — The driving effect is the Slope reference effect Σ W·sinα per source, the same for every method (G1). |
| Variable load — favorable | ×0.00 | 2.4.7.3.4.3 NOTE 2 · Slope convention · Tested against an independent reference — The driving effect is the Slope reference effect Σ W·sinα per source, the same for every method (G1). |
| Seismic coefficient | ×1.00 | 2.4.7.3.4.3 NOTE 2 · Slope convention · Tested against an independent reference — The driving effect is the Slope reference effect Σ W·sinα per source, the same for every method (G1). |
Effects of actions
| Factor | Value | Source |
|---|---|---|
| Soil weight effect | ×1.35 | 2.4.7.3.4.3 NOTE 2, Table A.3, A1, PDF p38, p136 · Tested against an independent reference |
| Permanent load effect — unfavorable | ×1.35 | 2.4.7.3.4.3 NOTE 2 · Slope convention · Tested against an independent reference — The driving effect is the Slope reference effect Σ W·sinα per source, the same for every method (G1). |
| Permanent load effect — favorable | ×1.00 | 2.4.7.3.4.3 NOTE 2 · Slope convention · Tested against an independent reference — The driving effect is the Slope reference effect Σ W·sinα per source, the same for every method (G1). |
| Variable load effect — unfavorable | ×1.50 | 2.4.7.3.4.3 NOTE 2 · Slope convention · Tested against an independent reference — The driving effect is the Slope reference effect Σ W·sinα per source, the same for every method (G1). |
Materials
| Factor | Value | Source |
|---|---|---|
| Effective cohesion | ÷1.00 | 2.4.7.3.4.3 NOTE 2 · Slope convention · Tested against an independent reference — The driving effect is the Slope reference effect Σ W·sinα per source, the same for every method (G1). |
| Friction (tanφ′) | ÷1.00 | 2.4.7.3.4.3 NOTE 2 · Slope convention · Tested against an independent reference — The driving effect is the Slope reference effect Σ W·sinα per source, the same for every method (G1). |
| Undrained strength (cu) | ÷1.00 | 2.4.7.3.4.3 NOTE 2 · Slope convention · Tested against an independent reference — The driving effect is the Slope reference effect Σ W·sinα per source, the same for every method (G1). |
| Shear strength (other models) | ÷1.00 | 2.4.7.3.4.3 NOTE 2 · Slope convention · Tested against an independent reference — The driving effect is the Slope reference effect Σ W·sinα per source, the same for every method (G1). |
Resistance
| Factor | Value | Source |
|---|---|---|
| Earth / global resistance | ÷1.10 | A.3.3.6(1)P, Table A.14, R2 γR;e, PDF p141 · Tested against an independent reference |
Reinforcement
| Factor | Value | Source |
|---|---|---|
| Anchor — pull-out | ÷1.10 | A.6(2)P, Table A.19, R2, PDF p144 · Not yet validated |