Annexure-1 Slope Stability Analysis Reports (52+377 - 2 A-Static)

Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.
0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0
ReSSA -- Reinforced Slope Stability Analysis CH- 52+377

Present Date/Time: Sat Feb 25 17:04:50 2023 \\t.....C Reports_22-23\Gabon Project\SEG-4\Slope Stability analysis\52+377\52+377_2 A-static.MSE
INPUT DATA (EXCLUDING REINFORCEMENT LAYOUT)
SOIL DATA
Internal angle of
Unit weight,  friction,  Cohesion, c
=========== Soil Layer #: =========== [kN/m ³] [deg.] [kPa]
...........................................................................
1 Filling 17.5 5.0 35.0
...........................................................................
2 RE-Wall 26.0 38.0 0.0
...........................................................................
3 Soil Layer-2 18.0 0.0 136.0
...........................................................................
4 Soil Layer-3 18.0 0.0 34.0
...........................................................................
5 Soil Layer-4 18.0 0.0 11.0
...........................................................................
6 Soil Layer-5 18.0 0.0 11.0
...........................................................................
7 Soil Layer-6 18.0 0.0 25.0
...........................................................................
8 Soil Layer-7 18.0 0.0 29.0
REINFORCEMENT
Analysis of slope WITHOUT reinforcement.
WATER
Water is not present
SEISMICITY
Not Applicable
Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0
CH- 52+377 Page 1 of 6

Copyright © 2001-2012 ADAMA Engineering, Inc. www.GeoPrograms.com License number ReSSA-301599

DRAWING OF SPECIFIED GEOMETRY - GENERAL - Quick Input
-- Problem geometry is defined along sections selected by user at x,y coordinates.

-- X1,Y1 represents the coordinates of soil surface. X2,Y2 represent the coordinates of the end of soil layer 1 and
start of soil layer 2, and so on.
GEOMETRY
Soil profile contains 8 layers (see details in next page)
UNIFORM SURCHARGE
Load Q1 = 20.00 [kPa] inclined from verical at 0.00 degrees, starts at X1s = 105.66 and ends at X1e = 115.66 [m].
Surcharge load, Q2
.......................................................................
None
Surcharge load, Q3
.......................................................................
None
STRIP LOAD
.......................................................................
None
8 9 10
11
Toe point
7 12
6
5
1 2 13
3
4
SCALE:
0 2 4 6[m]
CH- 52+377 Page 2 of 6


TABULATED DETAILS OF QUICK SPECIFIED GEOMETRY
Soil profile contains 8 layers. Coordinates in [m.]
# Xi Yi
Top of Layer 1 1 95.00 121.15
2 96.06 121.15
3 97.21 120.00
4 97.87 119.58
5 97.87 122.58
6 98.32 122.58
7 104.56 126.96
8 116.76 126.96
9 118.31 125.99
10 121.23 123.88
11 126.15 121.33
Top of Layer 2 12 97.87 119.58
13 97.87 122.58
14 98.32 122.58
15 99.32 119.40
Top of Layer 3 16 100.00 119.50
17 116.00 119.50
Top of Layer 4 18 100.00 118.50
19 116.00 118.50
Top of Layer 5 20 100.00 118.00
21 116.00 118.00
Top of Layer 6 22 100.00 117.50
23 116.00 117.50
Top of Layer 7 24 100.00 117.00
25 116.00 117.00
Top of Layer 8 26 100.00 116.50
27 116.00 116.50
CH- 52+377 Page 3 of 6


TABULATED DETAILS OF SPECIFIED GEOMETRY
Soil profile contains 8 layers. Coordinates in [m.]
# X Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8
1 95.00 121.15 119.58 119.50 118.50 118.00 117.50 117.00 116.50
2 96.06 121.15 119.58 119.50 118.50 118.00 117.50 117.00 116.50
3 97.21 120.00 119.58 119.50 118.50 118.00 117.50 117.00 116.50
4 97.87 119.58 119.58 119.50 118.50 118.00 117.50 117.00 116.50
5 98.32 122.58 122.58 119.50 118.50 118.00 117.50 117.00 116.50
6 99.32 123.28 119.40 119.50 118.50 118.00 117.50 117.00 116.50
7 100.00 123.76 119.40 119.50 118.50 118.00 117.50 117.00 116.50
8 104.56 126.96 119.40 119.50 118.50 118.00 117.50 117.00 116.50
9 116.00 126.96 119.40 119.50 118.50 118.00 117.50 117.00 116.50
10 116.76 126.96 119.40 119.50 118.50 118.00 117.50 117.00 116.50
11 118.31 125.99 119.40 119.50 118.50 118.00 117.50 117.00 116.50
12 121.23 123.88 119.40 119.50 118.50 118.00 117.50 117.00 116.50
13 126.15 121.33 119.40 119.50 118.50 118.00 117.50 117.00 116.50
CH- 52+377 Page 4 of 6


RESULTS OF ROTATIONAL STABILITY ANALYSIS
Results in the tables below represent critical circles identified between specified points on entry and exit. (Theta-exit set to 50.00 deg.)
The most critical circle is obtained from a search considering all the combinations of input entry and exit points.
Critical circles for each entry point (considering all specified exit points)
Entry Entry Point Exit Point Critical Circle
Point # (X,Y) (X,Y) ( Xc , Yc , R ) Fs STATUS
[m] [m] [m]
1 105.66 126.96 97.82 119.89 98.11 127.45 7.57 1.89

2 106.66 126.96 97.82 119.81 99.34 126.97 7.32 1.76
3 107.66 126.96 97.82 119.77 99.96 127.17 7.71 1.72
.4 108.66 126.96 97.82 119.91 98.12 131.31 11.41 1.56 . OK
5 109.66 126.96 92.31 121.16 98.42 131.72 12.20 2.06
6 110.66 126.96 90.28 121.19 99.19 128.60 11.58 2.08
7 111.66 126.96 97.79 119.91 98.18 136.32 16.41 1.56
8 112.66 126.96 92.28 121.19 101.19 128.60 11.58 1.98
9 113.66 126.96 88.23 121.26 99.50 130.53 14.60 1.95
10 114.66 126.96 88.26 121.23 99.97 130.93 15.21 1.90
11 115.66 126.96 97.78 119.92 98.20 145.08 25.16 1.71
Note: In the 'Status' column, OK means the critical circle was identified within the specified search domain. 'On extreme X-entry' means
that the critical result is on the edge of the search domain; a lower Fs may result if the search domain is expanded.
*************************
Results in the tables below represent critical circles identified between specified points on entry and exit. (Theta-exit set to 50.00 deg.)
The most critical circle is obtained from a search considering all the combinations of input entry and exit points.
Critical circles for each exit point (considering all specified entry points).
Exit Exit Point Entry Point Critical Circle
Point # (X,Y) (X,Y) ( Xc , Yc , R ) Fs STATUS
[m] [m] [m]
1 88.28 121.20 115.66 126.96 100.45 131.32 15.83 1.86

2 89.26 121.23 115.66 126.96 100.97 130.93 15.21 1.88
3 90.23 121.26 115.66 126.96 101.50 130.53 14.60 1.90
4 91.21 121.29 115.66 126.96 102.04 130.14 13.99 1.92
5 92.16 121.34 115.66 126.96 102.51 130.01 13.50 1.94
6 93.28 121.19 113.66 126.96 102.19 128.60 11.58 1.97
7 94.16 121.34 114.66 126.96 103.19 128.60 11.58 2.01
8 95.31 121.16 115.66 126.96 104.19 128.60 11.58 2.09
9 96.24 120.99 115.66 126.96 104.67 128.14 11.06 2.19
.10 97.82 119.91 108.66 126.96 98.12 131.31 11.41 1.56 . OK
11 98.20 122.63 109.66 126.96 101.65 130.83 8.89 2.42
Note: In the 'Status' column, OK means the critical circle was identified within the specified search domain. 'On extreme X-exit' means
that the critical result is on the edge of the search domain; a lower Fs may result if the search domain is expanded.
CH- 52+377 Page 5 of 6


CRITICAL RESULTS OF ROTATIONAL AND TRANSLATIONAL STABILITY ANALYSES

Rotational (Circular Arc; Bishop) Stability Analysis
Minimum Factor of Safety = 1.56
Critical Circle: Xc = 98.12[m], Yc = 131.31[m], R = 11.41[m]. (Number of slices used = 54 )
Translational (2-Part Wedge; Spencer), Direct Sliding, Stability Analysis
NOT CONDUCTED
Three-Part Wedge Stability Analysis
NOT CONDUCTED
REINFORCEMENT LAYOUT: DRAWING
SCALE:
0 2 4 6[m]
CH- 52+377 Page 6 of 6


Annexure-1 Slope Stability Analysis Reports (52+377 - 2 A-Static)

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Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.0 ReSSA Version 3.

ReSSA -- Reinforced Slope Stability Analysis CH- 52+377

INPUT DATA (EXCLUDING REINFORCEMENT LAYOUT)

Analysis of slope WITHOUT reinforcement.

Water is not present

CH- 52+377 Page 1 of 6

ReSSA -- Reinforced Slope Stability Analysis CH- 52+377

DRAWING OF SPECIFIED GEOMETRY - GENERAL - Quick Input

-- Problem geometry is defined along sections selected by user at x,y coordinates.

CH- 52+377 Page 2 of 6

ReSSA -- Reinforced Slope Stability Analysis CH- 52+377

TABULATED DETAILS OF QUICK SPECIFIED GEOMETRY

Soil profile contains 8 layers. Coordinates in [m.]

CH- 52+377 Page 3 of 6

ReSSA -- Reinforced Slope Stability Analysis CH- 52+377

TABULATED DETAILS OF SPECIFIED GEOMETRY

Soil profile contains 8 layers. Coordinates in [m.]

CH- 52+377 Page 4 of 6

ReSSA -- Reinforced Slope Stability Analysis CH- 52+377

RESULTS OF ROTATIONAL STABILITY ANALYSIS

1 105.66 126.96 97.82 119.89 98.11 127.45 7.57 1.89

1 88.28 121.20 115.66 126.96 100.45 131.32 15.83 1.86

CH- 52+377 Page 5 of 6

ReSSA -- Reinforced Slope Stability Analysis CH- 52+377

CRITICAL RESULTS OF ROTATIONAL AND TRANSLATIONAL STABILITY ANALYSES

Translational (2-Part Wedge; Spencer), Direct Sliding, Stability Analysis

Three-Part Wedge Stability Analysis

CH- 52+377 Page 6 of 6

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