Slope

Factor of safety

Seismic (pseudo-static)

Revision 1Required FoS ≥ 1.1Seismic design situation

Use it in Slope

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

Slope assumption · Slope convention · Not yet validated

A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.

Values

Actions

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

Resistance

Earth / global resistanceγRe÷1.00

Materials

Effective cohesionγc′÷1.00
Friction (tanφ′)γφ÷1.00
Undrained strength (cu)γcu÷1.00
Shear strength (other models)—÷1.00

Reinforcement

Anchor — tendonγt÷1.00
Anchor — head plateγp÷1.00
Anchor — pull-outγpo÷1.00
Nail — barγt÷1.00
Nail — head plateγp÷1.00
Nail — pull-outγpo÷1.00
Geosynthetic — ruptureγt÷1.00
Geosynthetic — pull-outγpo÷1.00
Steel strip — ruptureγt÷1.00
Steel strip — pull-outγpo÷1.00
Steel grid — ruptureγt÷1.00
Steel grid — pull-outγpo÷1.00
Pile — shearγs÷1.00

Sources

Actions

FactorValueSource
Soil weight — unfavorable×1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Soil weight — favorable×1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Permanent load — unfavorable×1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Permanent load — favorable×1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Variable load — unfavorable×1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Variable load — favorable×1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Seismic coefficient×1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.

Materials

FactorValueSource
Effective cohesion÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Friction (tanφ′)÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Undrained strength (cu)÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Shear strength (other models)÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.

Resistance

FactorValueSource
Earth / global resistance÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.

Reinforcement

FactorValueSource
Anchor — tendon÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Anchor — head plate÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Anchor — pull-out÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Nail — bar÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Nail — head plate÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Nail — pull-out÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Geosynthetic — rupture÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Geosynthetic — pull-out÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Steel strip — rupture÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Steel strip — pull-out÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Steel grid — rupture÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Steel grid — pull-out÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.
Pile — shear÷1.00Slope assumption · Slope convention · Not yet validated — A pseudo-static target of 1.1 follows common practice (cf. USACE; Hynes-Griffin & Franklin accept about 1.0–1.2); it is not taken from a design code.