Lecture 12: Slope Stability
|
|
|
- Sheena Green
- 6 years ago
- Views:
Transcription
1 Lecture 12: Slope Stability Key Questions 1. How do friction and cohesion work together to stabilize slopes? 2. What is trying to pull slope material down? 3. How does the slope angle play a role in slope stability? 4. What is the factor of safety equation? Kelso, WA Landslide
2 Decemeber 2007 storm event near Chehalis
3 Naches Landslide in October 2009 A massive landslide that closed a section of State Route 410, destroyed at least two homes, blocked and changed the flow of the Naches River (10/11/2009)
4
5
6 Slope stability is controlled by relief material strength soil water content vegetation Tons of earth and vegetation washed away from clear-cut hillsides into Stillman Creek, a tributary of the south fork of the Chehalis River.
7
8 Slope mechanics and material strength.
9 Arboretum unconsolidated sediment. dipping Chuckanut sandstone
10 Arboretum What holds the sediment in place?.
11 Arboretum What holds the sediment in place?. What s pulls it down?
12 Conceptual Model. W
13 Conceptual Model. W
14 w = weight is concentrated at the center of the block (center of mass).w
15 . W = slope angle
16 . W
17 . W weight always points straight down
18 . W weight = force
19 F p = component of weight parallel to the slope Ẉ
20 trigonometry states that = slope angle Ẉ
21 Ẉ F p = W x sin
22 Ẉ F p = W x sin sin = opposite hypotenuse
23 The force parallel to the inclined plane F p is what pulls it down the slope Driving Force = F p = W x sin.w
24 . small angle = small pulling force F p. F f c large angle = large pulling force F p
25 Slope mechanics and material strength.
26 F N = W x cos Ẉ cos = adjacent hypotenuse
27 F N = component of weight normal or perpendicular to the slope Ẉ
28 F N = component of weight normal or perpendicular to the slope Ẉ
29 The normal force F N is what contributes to a force the resists movement down the slope (i.e., it in part controls the material strength) F N = W x cos. W
30 When the block is horizontal ( = 0) then F N = w. W F N
31 push. F N friction force
32 . pull F N friction force
33 F f = friction force = F N x coefficient of friction. pull F N friction force
34 The coefficient of friction quantifies the degree of roughness between the two surfaces (bottom of the block and the horizontal surface). pull F N friction force
35 low coefficient of friction smooth block smooth surface
36 high coefficient of friction rough block rough surface
37 The coefficient of friction changes with geologic material Clay = 0.1 to 0.3 Sand = 0.4 to 0.8 Broken rock = 0.5 to 0.9 Note: the Greek symbol μ (mu) is usually used for coefficient of friction
38 The coefficient of friction is also controlled by mineralogy (quarts is strong, olivine is not) grain shape (angular versus rounded) packing arrangement (loose versus tight packing)
39 The magnitude of F N increases the interlocking of the two surface because the force pushes the imperfections together making it harder for the block to slide this increase the friction force F N F f = friction force = F N x μ
40 The magnitude of F N increases the interlocking of the two surface because the force pushes the imperfections together making it harder for the block to slide F N F f = friction force = F N x μ
41 The magnitude of F N increases the interlocking of the two surface because the force pushes the imperfections together making it harder for the block to slide F N F f = friction force = F N x μ
42 increases if these increase Friction force = F N x coefficient of friction. pull F N friction force
43 Mechanical friction keeps the block from sliding F f.w F N F p
44 slip plane F N F f.w F N F p
45 slip plane F N F f.w F N F p
46 Molecular cohesion between the grains also contributes to the material strength and keeps the block from sliding F f.w F N F p cohesion
47 Moist sand has strength
48 The strength is created by molecular forces of attraction between the sand water air
49 Calcite and silica cements that bind minerals together is another form of molecular cohesion
50 The stability of slopes is analyzed by comparing the magnitude of the driving forces to the resisting forces F f F N.W F p cohesion
51 Driving Force = F p = W x sin. W
52 Resisting forces = friction + cohesion F f F N.W F p cohesion
53 Factor of Safety = resisting force driving force F f F N.W F p cohesion
54 Factor of Safety = friction + cohesion F p F f F N.W F p cohesion
55 Factor safety = resisting force driving force F f F N.W F p cohesion
56 Factor safety = F f + c F p F f F N.W F p cohesion = c
57 Factor safety = W x cos x μ + c W x sin F f.w F N F p cohesion = c
58 At low slope angles F p is small and F N and hence F f are larger Factor safety = F f + c F p = FS >> 1. F f c Factor safety = W x cos x μ + c W x sin = FS >> 1
59 At high slope angles F p is large and F N and hence F f are smaller Factor safety = F f + c F p = FS < 1. F f c Factor safety = W x cos x μ + c W x sin = FS < 1
60 Factor safety = resisting forces driving forces = FS < 1 The slope fails if FS is less than 1. F f c
61 Thirteen homes had to be evacuated in Burien near Shorewood Drive SW and 131st Street when a hillside gave way and sent a wall of mud on homes and the street below. December 03, 2007)
62 Crews work to clear Westlake Avenue North after heavy rains caused a mud slide. (December 03, 2007)
63 A car rests beneath a section of Golden Gardens Drive NW, which collapsed early this morning during heavy rains. (December 03, 2007)
Chapter 11 10/30/2013. Mass Wasting. Introduction. Factors That Influence Mass Wasting. Introduction. Factors That Influence Mass Wasting
Introduction Chapter 11 Mass wasting - The downslope movement of material resulting from the force of gravity. Mass Wasting Mass wasting results when the force of gravity acting on a slope exceeds the
The module itself will take approximately 2 hours to complete. Please do not leave this until the last minute.
ATTENTION: Your grade for this assignment is based on your answers to the end-of-module questions AND the post-test. If you DO NOT take the post-test you will NOT be eligible for full points. The module
SHEAR STRENGTH OF SOIL
SHEAR STRENGTH OF SOIL Necessity of studying Shear Strength of soils : Soil failure usually occurs in the form of shearing along internal surface within the soil. Shear Strength: Thus, structural strength
SHEAR STRENGTH I YULVI ZAIKA
SHEAR STRENGTH I YULVI ZAIKA MATERI Keruntuhan mohr coulomb, stress paths, kuat geser tanah non kohesif dan kohesif, evaluasi kuat geser di lapangan, tegangan normal dan tegangan geser pada sebuah bidang
9/23/2013. Introduction CHAPTER 7 SLOPE PROCESSES, LANDSLIDES, AND SUBSIDENCE. Case History: La Conchita Landslide
Introduction CHAPTER 7 SLOPE PROCESSES, LANDSLIDES, AND SUBSIDENCE Landslide and other ground failures posting substantial damage and loss of life In U.S., average 25 50 deaths; damage more than $3.5 billion
Section 3. Slopes and Landscapes. What Do You See? Think About It. Investigate. Learning Outcomes
Chapter 4 Surface Processes Section 3 Slopes and Landscapes What Do You See? Learning Outcomes In this section, you will Calculate the angle of repose for different kinds of soils and other granular materials.
Primary Structures in Sedimentary Rocks. Engr. Sultan A. Khoso
Primary Structures in Sedimentary Rocks Engr. Sultan A. Khoso Sedimentary rocks Sedimentary rocks are those rocks which are formed by the weathered sediments of pre existing rocks (igneous or metamorphic
+F N = -F g. F g = m٠a g
Force Normal = F N Force Normal (or the Normal Force, abbreviated F N ) = F N = The contact force exerted by a surface on an object. The word Normal means perpendicular to Therefore, the Normal Force is
SLOPE FAILURE SLOPES. Landslides, Mudflows, Earthflows, and other Mass Wasting Processes
GEOL g406 Environmental Geology SLOPE FAILURE Landslides, Mudflows, Earthflows, and other Mass Wasting Processes Read Chapter 5 in your textbook (Keller, 2000) Gros Ventre landslide, Wyoming S. Hughes,
Mass Wasting. Revisit: Erosion, Transportation, and Deposition
Mass Wasting Revisit: Erosion, Transportation, and Deposition While landslides are a normal part of erosion and surface processes, they can be very destructive to life and property! - Mass wasting: downslope
Theory of Shear Strength
SKAA 1713 SOIL MECHANICS Theory of Shear Strength Prepared by, Dr. Hetty 1 SOIL STRENGTH DEFINITION Shear strength of a soil is the maximum internal resistance to applied shearing forces The maximum or
Mass Wasting. Requirements for Mass Wasting. Slope Stability. Geol 104: mass wasting
Mass Wasting Movement of earth materials downslope, driven by Gravitational Forces. Landslides - general term for rock or soil movement. In U.S., on average, mass wasting causes 1 to 2 billion dollars
Lecture # 02 DEPARTMENT OF CIVIL ENGINEERING SWEDISH COLLEGE OF ENGINEERING & TECHNOLOGY, WAH CANTT. 14th December,
Lecture # 02 DEPARTMENT OF CIVIL ENGINEERING SWEDISH COLLEGE OF ENGINEERING & TECHNOLOGY, WAH CANTT Instructor: Date: Engr. Imran Mehmood 14th December, 2011 1 SEDIMENTARY ROCKS SEDIMENTARY ROCKS The rocks
Essential Questions. What is erosion? What is mass wasting?
Erosion Essential Questions What is erosion? What is mass wasting? What is Erosion? Erosion The transportation of sediment from one area to another Caused mainly by running water but also caused by glaciers,
(Refer Slide Time: 01:15)
Soil Mechanics Prof. B.V.S. Viswanathan Department of Civil Engineering Indian Institute of Technology, Bombay Lecture 56 Stability analysis of slopes II Welcome to lecture two on stability analysis of
1. The diagram below shows the stump of a tree whose root grew into a small crack in bedrock and split the rock apart.
1. The diagram below shows the stump of a tree whose root grew into a small crack in bedrock and split the rock apart. 4. Which process involves either a physical or chemical breakdown of earth materials?
EARTH SCIENCE 11 CHAPTER 9 NOTES WATER MOVING UNDERGROUND
EARTH SCIENCE 11 CHAPTER 9 NOTES WATER MOVING UNDERGROUND KEY A. ALL THE WORLD S WATER 1. The world has an estimated one and one third thousand million cubic kilometers of water. 2. The earth s water is
What are the different ways rocks can be weathered?
Romano - 223 What are the different ways rocks can be weathered? Weathering - the breakdown of rocks and minerals at the Earth s surface 1. 2. PHYSICAL WEATHERING Rock is broken into smaller pieces with
SLOPE STABILITY LAB INTRODUCTION
INTRODUCTION SLOPE STABILITY LAB Slope Stability 1 Hills are made of various types of rocks. Some hills are made large layers of strong rock, others are made of unconsolidated sands. The slope of the hillside
Chapter 16 Weathering, Erosion, Mass Wasting. Chapter 16 Weathering, Erosion, Mass Wasting. Mechanical Weathering
Weathering, Erosion and Mass Wasting Weathering is the the breakdown of solid rock at or near the Earth's surface. Chapter 16 Weathering, Erosion, Mass Wasting Does weathering of rock remove or add CO
Geog 1000 Lecture 17: Chapter 10
Geog 1000 Lecture 17: Chapter 10 Landslides and Mass Movements Link to lectures: http://scholar.ulethbridge.ca/chasmer/classes/ Today s Lecture 1. Assignment 2 Due Pick up Assignment 1 if you don t have
Weathering, Erosion and Deposition
Weathering, Erosion and Deposition Shaping the Earth s Surface Weathering the process of breaking down rocks into smaller fragments Erosion the transport of rock fragments from one location to another
Explain how rock composition affects the rate of weathering. Discuss how surface area affects the rate at which rock weathers.
Objectives Explain how rock composition affects the rate of weathering. Discuss how surface area affects the rate at which rock weathers. Describe the effects of climate and topography on the rate of weathering.
UNIVERSITY OF SASKATCHEWAN Department of Physics and Engineering Physics
UNIVERSITY OF SASKATCHEWAN Department of Physics and Engineering Physics Physics 115.3 MIDTERM TEST Alternative Sitting October 011 Time: 90 minutes NAME: (Last) Please Print (Given) STUDENT NO.: LECTURE
LECTURE 28. Module 8 : Rock slope stability 8.3 WEDGE FAILURE
LECTURE 28 8.3 WEDGE FAILURE When two or more weak planes in the slope intersect to from a wedge, the slope may fail as wedge failure. The basic condition at which wedge mode of slope failure happens are
Ch 4a Stress, Strain and Shearing
Ch. 4a - Stress, Strain, Shearing Page 1 Ch 4a Stress, Strain and Shearing Reading Assignment Ch. 4a Lecture Notes Sections 4.1-4.3 (Salgado) Other Materials Handout 4 Homework Assignment 3 Problems 4-13,
GEOL Lab 9 (Carbonate Sedimentary Rocks in Hand Sample and Thin Section)
GEOL 333 - Lab 9 (Carbonate Sedimentary Rocks in Hand Sample and Thin Section) Sedimentary Rock Classification - As we learned last week, sedimentary rock, which forms by accumulation and lithification
Weathering, Erosion, Deposition
Weathering, Erosion, Deposition The breakdown of rocks at or near the Earth s Surface. Physical Chemical - The breakdown of rock into smaller pieces without chemical change. - Dominant in moist /cold conditions
1. Erosion by Running Water Most powerful cause of erosion
I. Destructive Forces Notes: Destructive force: a process in which land is destroyed or changed such as weathering and erosion. All landforms are a result of a combination of constructive and destructive
Class Notes: Surface Processes
Name: Date: Period: Surface Processes The Physical Setting: Earth Science Class Notes: Surface Processes I. Weathering and Soils Weathering -! Sediments -! Weathering occurs when rocks are exposed to:
Mass Wasting Landslides, Mudflows. Chapter 7. Geology of the Hawaiian Islands. Any Questions? Mass wasting. Mass wasting.
Geology of the Hawaiian Islands Class 17 9 March 2004 Any Questions? Mass Wasting, Mudflows Chapter 7 Mass wasting Transportation of large masses of rock Downslope movement of rock and soil debris under
BACKFILL AND INTERFACE CHARACTERISTICS
Chapter 5 BACKFILL AND INTERFACE CHARACTERISTICS This chapter introduces the properties of backfill and the distribution of soil density in the soil bin. The interface characteristics between the backfill
To get you thinking Explain how these different layers of rock formed? Why are these layers different colors? Sedimentary Rocks
To get you thinking Explain how these different layers of rock formed? Why are these layers different colors? Sedimentary Rocks Bryce Canyon, Utah Badlands, South Dakota Weathering Whenever rock is exposed
Forces Part 1: Newton s Laws
Forces Part 1: Newton s Laws Last modified: 13/12/2017 Forces Introduction Inertia & Newton s First Law Mass & Momentum Change in Momentum & Force Newton s Second Law Example 1 Newton s Third Law Common
4.4. Friction and Inclines
4.4. Friction and Inclines Frictional Forces Friction has its basis in surfaces that are not completely smooth. This roughness causes resistance to horizontal motion. Even smooth surfaces have a certain
SKAA 1213 Engineering Mechanics
SKAA 1213 Engineering Mechanics TOPIC 6 FRICTION Lecturers: Rosli Anang Dr. Mohd Yunus Ishak Dr. Tan Cher Siang Lesson 7 Outline Introduction Equilibrium on a horizontal plane Equilibrium i on an inclined
MECHANICS. MRS KL FALING Grade 11 Physical Science
MECHANICS MRS KL FALING Grade 11 Physical Science Revision from grade 10 Fill in the missing words A quantity can be either a scalar or a. Examples of scalars are,, and. A vector quantity is only fully
(Refer Slide Time: 02:18)
Geology and Soil Mechanics Prof. P. Ghosh Department of Civil Engineering Indian Institute of Technology Kanpur Lecture 40 Shear Strength of Soil - C Keywords: Shear strength of soil, direct shear test,
Unsafe Ground: Landslides and Other Mass Movements
Unsafe Ground: Landslides and Other Mass Movements Mass Movements Downslope motion of earth materials by gravity. Mass movements are a type of natural hazard. Natural feature of the environment. Can cause
1. A sphere with a radius of 1.7 cm has a volume of: A) m 3 B) m 3 C) m 3 D) 0.11 m 3 E) 21 m 3
1. A sphere with a radius of 1.7 cm has a volume of: A) 2.1 10 5 m 3 B) 9.1 10 4 m 3 C) 3.6 10 3 m 3 D) 0.11 m 3 E) 21 m 3 2. A 25-N crate slides down a frictionless incline that is 25 above the horizontal.
P. O. D. Station 2. You already have the real time. You found that with your stop watch.
P. O. D. Station 2 In Station 2 you have to find the real time (t real ), the real acceleration (a real )and the real force (Force real ). Then you have to find the ideal force, the ideal acceleration,
Geology 101. Reading Guides for Chapters 6 and 12
Geology 101 Name Chapter 6: Weathering and Soils (p. 160): Reading Guides for Chapters 6 and 12 This chapter is about the processes involved in the disintegration of rock. Weathering is often mistaken
Mass Wasting. Mass Wasting. Earth s s External Processes
1 Mass Wasting Presentation Modified from Instructor Resource Center on CD-ROM, Foundations of Earth Science, 4 th Edition, Lutgens & Tarbuck Mass Wasting 2 Down-slope movement of rock, loose material
Theory of Shear Strength
MAJ 1013 ADVANCED SOIL MECHANICS Theory of Shear Strength Prepared by, Dr. Hetty 1 Strength of different materials Steel Concrete Soil Tensile strength Compressive strength Shear strength Complex behavior
PLANES OF WEAKNESS IN ROCKS, ROCK FRCTURES AND FRACTURED ROCK. Contents
PLANES OF WEAKNESS IN ROCKS, ROCK FRCTURES AND FRACTURED ROCK Contents 7.1 Introduction 7.2 Studies On Jointed Rock Mass 7.2.1 Joint Intensity 7.2.2 Orientation Of Joints 7.2.3 Joint Roughness/Joint Strength
Bowen s Chemical Stability Series
Lab 5 - Identification of Sedimentary Rocks Page - Introduction Sedimentary rocks are the second great rock group. Although they make up only a small percentage of the rocks in the earth s crust (~5%)
LAWS OF MOTION. Chapter Five MCQ I
Chapter Five LAWS OF MOTION MCQ I 5. A ball is travelling with uniform translatory motion. This means that (a) it is at rest. (b) the path can be a straight line or circular and the ball travels with uniform
2. Mass, Force and Acceleration
. Mass, Force and Acceleration [This material relates predominantly to modules ELP034, ELP035].1 ewton s first law of motion. ewton s second law of motion.3 ewton s third law of motion.4 Friction.5 Circular
Geology 101. Reading Guides for Chapters 5 and 14 Weathering: the Breakdown of Rocks (p. 142)
Geology 101 Name Reading Guides for Chapters 5 and 14 Weathering: the Breakdown of Rocks (p. 142) Please read the introduction to the chapter. What is the difference between weathering and erosion? Weathering
Friction Can Be Rough
10.1 Observe and Find a Pattern Friction Can Be Rough Observe the following experiment: Rest a brick on a rough surface. Tie a string around the brick and attach a large spring scale to it. Pull the scale
Clyde River Landslide
Clyde River Landslide Department of Geology, Perkins Hall, University of Vermont, Burlington, VT 05405 Abstract: This paper investigates a landslide on the Clyde River in Newport, Vermont. The landslide
Sand in Forensic Geology. Modified from a PowerPoint presentation by J. Crelling, Southern Illinois University
Sand in Forensic Geology Modified from a PowerPoint presentation by J. Crelling, Southern Illinois University Characterizing Properties of Sand Remember that sand is actually a size of sediment Characterizing
GG 454 March 19, EFFECTIVE STRESS AND MOHR-COULOMB FAILURE (26)
GG 454 March 19, 2002 1 EFFECTIVE STRESS AND MOHR-COULOMB FAILURE (26) I Main Topics A Driving and resisting stresses at the base of an inclined block B Factor of safety C Effective stress D Mohr-Coulomb
Year 11 Physics Tutorial 84C2 Newton s Laws of Motion
Year 11 Physics Tutorial 84C2 Newton s Laws of Motion Module Topic 8.4 Moving About 8.4.C Forces Name Date Set 1 Calculating net force 1 A trolley was moved to the right by a force applied to a cord attached
CHARACTERISTICS OF DRY FRICTION & PROBLEMS INVOLVING DRY FRICTION
CHARACTERISTICS OF DRY FRICTION & PROBLEMS INVOLVING DRY FRICTION Today s Objective: Students will be able to: a) Understand the characteristics of dry friction. b) Draw a FBD including friction. c) Solve
Lecture 14: Floods. Key Questions
Lecture 14: Floods Key Questions 1. What is an upstream flood? 2. What is a downstream flood? 3. What were the setup conditions that cause floods? 4. What is a 100-year flood? 5. How are 100-year flood
FORCE. Definition: Combining Forces (Resultant Force)
1 FORCE Definition: A force is either push or pull. A Force is a vector quantity that means it has magnitude and direction. Force is measured in a unit called Newtons (N). Some examples of forces are:
Find the magnitude of F when t = 2. (9 marks)
Condensed M2 Paper These questions are all taken from a Mechanics 2 exam paper, but any intermediate steps and diagrams have been removed, leaving enough information to answer the question, but none of
Brittle Deformation. Earth Structure (2 nd Edition), 2004 W.W. Norton & Co, New York Slide show by Ben van der Pluijm
Lecture 6 Brittle Deformation Earth Structure (2 nd Edition), 2004 W.W. Norton & Co, New York Slide show by Ben van der Pluijm WW Norton, unless noted otherwise Brittle deformation EarthStructure (2 nd
Chapter 4 Dynamics: Newton s Laws of Motion
Chapter 4 Dynamics: Newton s Laws of Motion Force Newton s First Law of Motion Mass Newton s Second Law of Motion Newton s Third Law of Motion Weight the Force of Gravity; and the Normal Force Applications
Natural Disasters. Why Are There Earthquakes? 197 words. The Power of the Earth 221 words. Big Waves! 188 words
ARTICLE-A-DAY Natural Disasters 6 Articles Check articles you have read: Why Are There Earthquakes? 197 words The Power of the Earth 221 words Big Waves! 188 words The Volcano That Keeps Erupting 228 words
EOLIAN PROCESSES & LANDFORMS
EOLIAN PROCESSES & LANDFORMS Wind can be an effective geomorphic agent under conditions of sparse vegetation & abundant unconsolidated sediment egs. hot & cold deserts, beaches & coastal regions, glacial
Chapter 3 Erosion and Deposition. The Big Question:
Chapter 3 Erosion and Deposition The Big Question: 1 Design a way to represent and describe the 4 types of mass movement. You may use pictures, diagrams, list, web, chart, etc 2 Chapter 3: Erosion and
Mass Wasting: The Work of Gravity
Chapter 15 Lecture Earth: An Introduction to Physical Geology Twelfth Edition Mass Wasting: The Work of Gravity Tarbuck and Lutgens Chapter 15 Mass Wasting The Importance of Mass Wasting Slopes are the
Review of Lectures 1, 2 and 3
Physics 22000 General Physics Lecture 5 Applying Newton s Laws Fall 2016 Semester Prof. Matthew Jones 1 Review of Lectures 1, 2 and 3 Algebraic description of linear motion with constant acceleration:
Everybody remains in a state of rest or continues to move in a uniform motion, in a straight line, unless acting on by an external force.
NEWTON S LAWS OF MOTION Newton s First Law Everybody remains in a state of rest or continues to move in a uniform motion, in a straight line, unless acting on by an external force. Inertia (Newton s 1
Since the block has a tendency to slide down, the frictional force points up the inclined plane. As long as the block is in equilibrium
Friction Whatever we have studied so far, we have always taken the force applied by one surface on an object to be normal to the surface. In doing so, we have been making an approximation i.e., we have
Sedimentary Environments Chapter 8
Sedimentary Environments Chapter 8 Does not contain complete lecture notes. To be used to help organize lecture notes and home/test studies. What is a sedimentary rock? Sedimentary rocks are products of
Chapter 5. Forces in Two Dimensions
Chapter 5 Forces in Two Dimensions Chapter 5 Forces in Two Dimensions In this chapter you will: Represent vector quantities both graphically and algebraically. Use Newton s laws to analyze motion when
J. Paul Guyer, P.E., R.A.
J. Paul Guyer, P.E., R.A. Paul Guyer is a registered mechanical engineer, civil engineer, fire protection engineer and architect with over 35 years experience in the design of buildings and related infrastructure.
Reinforced Soil Structures Reinforced Soil Walls. Prof K. Rajagopal Department of Civil Engineering IIT Madras, Chennai
Geosynthetics and Reinforced Soil Structures Reinforced Soil Walls continued Prof K. Rajagopal Department of Civil Engineering IIT Madras, Chennai e-mail: gopalkr@iitm.ac.inac in Outline of the Lecture
Prof. B V S Viswanadham, Department of Civil Engineering, IIT Bombay
19 Module 5: Lecture -1 on Stability of Slopes Contents Stability analysis of a slope and finding critical slip surface; Sudden Draw down condition, effective stress and total stress analysis; Seismic
Forces and Newton s Laws Notes
Forces and Newton s Laws Notes Force An action exerted on an object which can change the motion of the object. The SI unit for force is the Newton (N) o N = (kg m)/s 2 o Pound is also a measure of force
SOIL SHEAR STRENGTH. Prepared by: Dr. Hetty Muhammad Azril Fauziah Kassim Norafida
SOIL SHEAR STRENGTH Prepared by: Dr. Hetty Muhammad Azril Fauziah Kassim Norafida What is shear strength Shear strength of a soil is the maximum internal resistance to applied shearing forces Why it is
AP Physics Free Response Practice Dynamics
AP Physics Free Response Practice Dynamics 14) In the system shown above, the block of mass M 1 is on a rough horizontal table. The string that attaches it to the block of mass M 2 passes over a frictionless
Environmental Geology Lab 5 - Mass Wasting Hazards
Environmental Geology Lab 5 - Mass Wasting Hazards page - 1 Many landslides, slope failures or sinkholes (collapse structures formed in terrain underlain by limestone rocks) occur during or immediately
The physical breakdown and chemical alteration of rocks and minerals at or near Earth s surface.
The physical breakdown and chemical alteration of rocks and minerals at or near Earth s surface. The material that is chemically and mechanically weathered to yield sediment and soil. Regolith consisting
Forces and Newton s Laws
chapter 3 section 1 Forces Forces and Newton s Laws What You ll Learn how force and motion are related what friction is between objects the difference between mass and weight Before You Read When you hit
E X P E R I M E N T 6
E X P E R I M E N T 6 Static & Kinetic Friction Produced by the Physics Staff at Collin College Copyright Collin College Physics Department. All Rights Reserved. University Physics, Exp 6: Static and Kinetic
L.O: SLOWING STREAMS DEPOSIT (SORT) SEDIMENT HORIZONTALLY BY SIZE.
L.O: SLOWING STREAMS DEPOSIT (SORT) SEDIMENT HORIZONTALLY BY SIZE. 1. Base your answer to the following question on the profile shown below, which shows the pattern of horizontal sorting produced at a
Your teacher will show you a sample or diagram of each, and show you a settling column. Draw these, and label your diagrams (8 pts) Ungraded:
From Sand to Stone: How do we recognize and interpret sedimentary rocks in the rock record? (Based closely on the University of Washington ESS 101 Lab 5: Sedimentary Rocks) Introduction: This lab consists
Pratice Surface Processes Test
1. The cross section below shows the movement of wind-driven sand particles that strike a partly exposed basalt cobble located at the surface of a windy desert. Which cross section best represents the
Landslide stability analysis using the sliding block method
Landslide stability analysis using the sliding block method E. Lino, R. Norabuena, M. Villanueva & O. Felix SRK Consulting (Peru) S.A., Lima, Peru A. Lizcano SRK Consulting (Vancouver) S.A., British Columbia,
Topic 6: Weathering, Erosion and Erosional-Deposition Systems (workbook p ) Workbook Chapter 4, 5 WEATHERING
Topic 6: Weathering, Erosion and Erosional-Deposition Systems (workbook p. 95-125) Workbook Chapter 4, 5 THE BIG PICTURE: Weathering, erosion and deposition are processes that cause changes to rock material
Lecture 5. Dynamics. Forces: Newton s First and Second
Lecture 5 Dynamics. Forces: Newton s First and Second What is a force? It s a pull or a push: F F Force is a quantitative description of the interaction between two physical bodies that causes them to
Chapter 2: Landslides and Debris Flows
Chapter 2: Landslides and Debris Flows Chapter 2: Landslides and Debris Flows Landslides and debris flows are among the major causes of flash floods in the Himalayan region as the rock, earth, debris,
GG101 Lecture 22: Mass Wasting. Soil, debris, sediment, and broken rock is called regolith.
GG101 Lecture 22: Mass Wasting Mass Wasting is the movement of rock and soil down a slope due to the force of gravity. Soil, debris, sediment, and broken rock is called regolith. Mass wasting creates broad
Force, Friction & Gravity Notes
Force, Friction & Gravity Notes Key Terms to Know Speed: The distance traveled by an object within a certain amount of time. Speed = distance/time Velocity: Speed in a given direction Acceleration: The
5. Which surface soil type has the slowest permeability rate and is most likely to produce flooding? A) pebbles B) sand C) silt D) clay A) B) C) D)
1. During a heavy rainstorm, soil samples A and B both became saturated with water. However, 10 minutes after the storm ended, the soils appeared as shown below. Which statement best explains the observed
Coefficient of Friction
HOUSTON COMMUNITY COLLEGE SYSTEMS SOUTHWEST COLLEGE COLLEGE PHYSICS I PHYS 1401 PRE LAB QUESTIONS Due before lab begins. Coefficient of Friction 1) Explain briefly the different types of frictional forces.
AP Physics First Nine Weeks Review
AP Physics First Nine Weeks Review 1. If F1 is the magnitude of the force exerted by the Earth on a satellite in orbit about the Earth and F2 is the magnitude of the force exerted by the satellite on the
VECTORS IN 2 DIMENSIONS
Free PowerPoint Templates VECTORS IN 2 DIMENSIONS Sutherland High School Grade 11 2018 SCALAR A physical quantity that has a magnitude and unit only. Example: Mass Time Distance Speed Volume Temperature
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) You are standing in a moving bus, facing forward, and you suddenly fall forward as the
Citizens Photo Monitoring Report. Prepared by Sakhalin Environment Watch & Pacific Environment. Sakhalin II Pipeline Route October & December 2007
Citizens Photo Monitoring Report Prepared by Sakhalin Environment Watch & Pacific Environment Sakhalin II Pipeline Route October & December 2007 October 23, 2007: KP 493.6-493.9. General view from the
NC Earth Science Essential Standards
NC Earth Science Essential Standards EEn. 2.1 Explain how processes and forces affect the Lithosphere. EEn. 2.1.1 Explain how the rock cycle, plate tectonics, volcanoes, and earthquakes impact the Lithosphere.
Chapter 4 Dynamics: Newton s Laws of Motion
Chapter 4 Dynamics: Newton s Laws of Motion Force Newton s First Law of Motion Mass Newton s Second Law of Motion Newton s Third Law of Motion Weight the Force of Gravity; and the Normal Force Applications
3 Erosion and Deposition by Ice
CHAPTER 12 3 Erosion and Deposition by Ice SECTION Agents of Erosion and Deposition BEFORE YOU READ After you read this section, you should be able to answer these questions: What are glaciers? How do
Conceptual Physics Fundamentals. Chapter 4: NEWTON S LAWS OF MOTION
Conceptual Physics Fundamentals Chapter 4: NEWTON S LAWS OF MOTION This lecture will help you understand: Newton s First Law of Motion Newton s Second Law of Motion Forces and Interactions Newton s Third
Review Exam Chapter 5 --1/19/2010
Name: Class: Date: Review Exam Chapter 5 --1/19/2010 Modified True/False Indicate whether the sentence or statement is true or false. If false, change the identified word or phrase to make the sentence
Chapter 8: Lesson 1 Notes
Chapter 8: Lesson 1 Notes Mineral- a nonliving, naturally occurring solid that has its own regular arrangement of particles in it. Minerals are found in rocks and soil. There are more than 4,000 types