ANNOUNCEMENTS
Monday April 4th, 810 pm, Coover 2245
Equation
Sheet on WEBCT
Exam 2 Review Session:
3 to 5pm April 3, 2011
Room 322 Town
LATERAL EARTH PRESSURE
PART 1 (OBJECTIVES 5660)
CE 360B Geotechnical Engineering Lecture # 21
Question?
What is the
Iowa State University CCEE Dept.
CE 360 Spring 2013
EXAM 1 REVIEW QUESTIONS
These example questions are provided for practice purposes only and must be used as a
supplement to the material covered in lectures, labs, and homeworks. The exam questions
will
Iowa State University
CCEE Dept.
CE 360 Spring 2013
EXAM 11 REVIEW PROBLEMS
2D Flow and Flow Nets
1. 2—D and 3D ﬂow of water through soil can be represented by the Laplace equation.
Exam II Review Problems v2
What two equations and/or laws combine to fo
JE360B Geotechnical Engineering CCEE Dept.
Fall 2012 Iowa State University
CE 360 Geotechnical Engineering
Exam No. 1
Exam Grade /100
HONOR PLEDGE: On my honor as a student of Iowa State University, I have neither
given nor received unauthorized aid on th
SoLUTioM
CE 360 Geotechnical Engineering
Final Exam Practice Questions
For each multiple choice question below, mark the letter on the answer sheet that corresponds to
the single best answer.
1. (2) Which of the following is N_OT a mechanical weathering
2.4
a. Determine the percent finer than each sieve and plot a grainsize distribution curve.
Sieve
No.
4
10
20
40
60
100
200
Pan
Opening
(mm)
4.75
2.00
0.850
0.425
0.250
0.150
0.075

Mass of soil
retained (g)
0
18.5
53.2
90.5
81.8
92.2
58.5
26.5
Cumulati
CE360B Geotechnical Engineering
Spring 2011
Describe the three major processes of
soil formation:
1) Weathering; 2) Erosion and
Transportation, and 3) Deposition.
1.
Weathering:Processofbreakingdown
rocksbyMechanicalorChemical
Disintegration
2.
Erosionand
CE360B Geotechnical Engineering
Exam 2 Practice Questions
1. (2) Given the stratigraphic section in Figure 1, if the water level in the well rises by lm above the
level shown in the figure and the water table remains at the ground surface:
a The effective
ANNOUNCEMENTS
Exam 1 tonight, 810 pm,
Coover 2245
Chapters 18, Course Objectives
129 (see exam objectives sheet)
No lab this week
TODAY: Ch. 10.110.2
Stresses in a soil mass
Mohrs circle
1
STRESSES IN A SOIL MASS
The stress state at a point in the soi
EXAM #1
Monday Feb. 20th, 810 pm
Coover 2245
Chapters 18, Course Objectives
129 (see exam objectives sheet)
No labs during exam weeks
1
EFFECTIVE STRESS PRINCIPLE
In engineering practice, difficulties with soils
are almost exclusively due not to the so
ANNOUNCEMENTS
HW #3: due Friday 2/10/2012
Das Problems 6.4, 6.5, 6.8, 6.12
TA office
hours in Town 407
W 2:10  4:10 pm
F 10:00 am noon
Today: finish up Compaction
1
FIELD COMPACTION EQUIPMENT
Rollers
Smooth wheel/drum
Sheepsfoot
Pneumatic  rubber tired
CE360: Geotechnical Engineering
Chapter 11
COMPRESSIBILITY OF SOIL
Professor Jian Chu
CCEE, ISU
Textbook sections 11.1 to 11.10
Course Objectives 37  43
1
TOPICS
1. What is settlement?
2. How to calculate settlement?
3. How to measure the compressibi
ANNOUNCEMENTS
Read Ch. 1 & 2
(see syllabus for reading schedule)
1
ROCK CYCLE
Rocks, Soils and Minerals
ParticleSize Analysis
3
4
ROCK CLASSIFICATION
Igneous Rock:
formed by solidification of magma, intrusive or extrusive
Sedimentary Rock:
formed by comp
ANNOUNCEMENTS / OVERVIEW
HW #5: due Friday 3/2/2012
Das Problems 9.2, 9.4, 9.6, 9.10, 9.12
Basic Skills Test #2 in Lab 8: 2D flow (flow nets)
Typo in Fig 10.2 of text:
2
x y
2
xy
2
2
should read
y x
2
xy
2
Today: Calculating Stresses from Surface Loa
LSOOWL A1175 cm) 5590 W" . (i: 0.cfw_3
Bath a 3 62.0 or";
Cansbomv W tat
. , wxio 
k )4th lTSKS'OKISO 0.08/(om/gec)
H cfw_imam canaluavvtg. K = m 115/ (In/sec
01):ch velocity 1/ lki
If 'HB/Wtaz of Wot/158 flaw/J7 #0th the $0151, 114 omit the is 2
ANNOUNCEMENTS
HW #4: due Friday 2/17/2012
Das Problems 7.2, 7.4, 7.7, 8.2, 8.5, 8.6
Today: 2D flow and flownets
1
EMPIRICAL RELATIONSHIPS FOR k
2
10
for laminar flow, primarily in loose, clean sands
recent research shows that c can vary by orders of magn
EXAMPLE 1:
SEEPAGE WITH PORE PRESSURE CALCULATION
1
EXAMPLE 1:
SEEPAGE WITH PORE PRESSURE CALCULATION
2.) ht=he+hp=0+7 m
1.) Datum (he=0)
ht=he+hp
=he+(u/w)=0
3.) Nf = 2, Nd = 7, H = 7 m, h = H/Nd = 1 m per equipotential drop
At point a, total head is ht
ANNOUNCEMENTS
TA office
hours in Town 407
W 2:10  4:10 pm
F 10:00 am  noon
1
COMPACTION (CH. 6)
Compaction is the densification of a soil by the use
of mechanical energy
The process of expelling air from the soil
Improves strength
o
Increases bearing c
ANNOUNCEMENTS / OVERVIEW
HW #6: due Friday
Das Problems 10.4, 10.7, 10.12, 10.20
Basic Skills Test #3 next week: Effective stress calculations
Today: more on
Consolidation Settlement and Rate of Consolidation

Textbook sections 11.1211.13, 11.18

Cours
ANNOUNCEMENTS
HW #2: due Friday 2/3/2012
Das Problems 3.1, 3.4, 3.8, 3.9, 3.10, 3.20
Follow reading schedule in Syllabus
Read Sec. 6.16.12 for Monday
You should have read Chap 1 5 by now
1
NOTE ON GRAVEL
USCS classifies gravel as passing the 3 in. (76.2
ANNOUNCEMENTS, 2/6/2012
Today
1.
2.
Finish up compaction video
New topics: Soil water & 1D seepage, Capillary
water
1
PERMEABILITY
Importance of water in geotechnical engineering
Many geotechnical problems are related to water
determining rate of seepage
aambm x22
kp=3$o Azlz'nKZLrLZZH/n
0:20 LL/M
BacmSe/of Sava 1 C30
Actor to MohrCobwvm fqwe Cnfianfon
WPAD
Z1 : 0+ TQn : 0f 20 WhRX': [616 /7293
Force, 1 ZfA: /$616x4:52. L6 12.3
Normal force
Test no. (N) Shear force at failure (ID Normal stress