SLOPE/W Analysis | Assignment

Question two
Solution
Depth factor, Df = 12
6 =2=nd
The slope angle, ß = ta n−1
( 1
2.5 )=21.801 °
Where by 21.801 ̊ is less than 53 ̊
Ø = 0
Stability number = 6.1 from the Taylor’s chart (Scott, 2013)
So Ns = r × H × F
Cu
F is given by F = Ns × Cu
r × H
Where r= 19kN/m3
Cu= 45kPa
H= 6m
Therefore F= Ns × Cu
r × H = 6.1 × 45
19 ×6 =2.408
The type of critical slip circle is midpoint circle, nd=2
Question three
The data from Geo studio software, Bishop’s stabilitySolution
SLOPE/W Analysis
Report generated using GeoStudio 2018 R2. Copyright © 1991-2018 GEOSLOPE International Ltd.
File Information
File Version: 9.01
Revision Number: 13
Date: 04/04/2020
Time: 17:41:17
Tool Version: 9.1.1.16749
File Name: DOUGLAS.gsz

Directory: C:\Users\HP\Desktop\
Last Solved Date: 04/04/2020
Last Solved Time: 17:41:23
Project Settings
Unit System: International System of Units (SI)
Analysis Settings
SLOPE/W Analysis
Kind: SLOPE/W
Method: Bishop
Settings
PWP Conditions from: Piezometric Line
Apply Phreatic Correction: No
Use Staged Rapid Drawdown: No
Limit State Design Approach: BS8006: 1995 Section 7
Unit Weight of Water: 9.807 kN/m³
Slip Surface
Direction of movement: Left to Right
Use Passive Mode: No
Slip Surface Option: Entry and Exit
Critical slip surfaces saved: 1
Optimize Critical Slip Surface Location: Yes
Optimizations Settings
Maximum Iterations: 2,000
Convergence Tolerance: 1e-07
Starting Points: 8
Ending Points: 16
Complete Passes per Insertion: 1
Driving Side Maximum Convex Angle: 5 °
Resisting Side Maximum Convex Angle: 1 °
Tension Crack Option: (none)
Distribution
ODF Calculation Option: Constant
Advanced
Geometry Settings
Minimum Slip Surface Depth: 0.1 m
Number of Slices: 30
Overdesign Factor Convergence Settings
Maximum Number of Iterations: 100
Tolerable difference in ODF: 0.001