Task input

The goal of this example is to address stability of a certain structure by calculating its factor of safety. A simple slope free of water and external loading is analyzed first. The influence of external surcharge applied on the top embankment is examined in the 2nd stage of construction. The stabilizing effect of anchors is assessed in the 3rd stage.

	Soil parameters	Sandy silt	Class R4
-	Bulk weight of soils [KN/m3]	18	20	[γ]
-	Modulus of elasticity [MPa]	21	300	[E]
-	Poisson’s number [ - ]	0,30	0,2	[ν]
-	Cohesion [kPa]	9	120	[c]
-	Angle of internal friction [o]	22,7	38	[φ]
-	Angle of dilation [o]	0	0	[ψ]
-	Bulk weight of saturated soil [KN/m3]	18	20	[γsat]

Terrain shape

Point No.	Interface 1 (terrain)		Point No.	Interface 2 (terrain)
	Coord. X [m]	Coord. Z [m]		Coord. X [m]	Coord. Z [m]
1	00.00	-9.00	1	00.00	-11,50
2	11.00	-9.00	2	14.00	-11.00
3	21.00	-2.50	3	21.00	-9.25
4	29.50	-2.50	4	40.00	-9.00
5	32.25	-4.00
6	40.00	-4.00

Surcharge – 2nd stage

Mag.1     Mag.2       x1        x2    

[kN/m2]   [kN/m2]      [m]       [m]

35.00     35.00     22.00     29.00

Surcharge – 3rd stage

Mag.1     Mag.2       x1        x2      z1     alfa        

[kN/m2]   [kN/m2]      [m]       [m]     [m]    [st.]

35.00     35.00     22.00     29.00

72.00               15.28             -6.22    287.0

The next step is to select the type of analysis.