Traverse
Definition
A traverse is a series of established stations tied together by angle and distance A traverse is usually a control survey
To locate the detail for the preparation of plans To locate engineering works
Chapter 5
Traverse
The angles ar
CIVL2006 Soil Mechanics
Topic 3: Seepage and Flownets
Dr. Fiona Kwok
Room 521, Haking Wong Building
The University of Hong Kong
Tel: (852) 2859 2655
Email: fiona.kwok@hku.hk
3.1 Fluid Flow in Soils
Relevant Readings:
Knappett & Craig (2012): Chapter 2.1-2
CIVL2006 Soil Mechanics
Topic 5: Consolidation and Settlement
Dr. Fiona Kwok
Room 521, Haking Wong Building
The University of Hong Kong
Tel: (852) 2859 2655
Email: fiona.kwok@hku.hk
Consolidation (1)
When soil is loaded undrained, the pore pressures incr
CIVL2106 Soil Mechanics
Topic 0: Introduction
Dr. Fiona Kwok
Room 521, Haking Wong Building
The University of Hong Kong
Tel: (852) 2859 2655
Email: fiona.kwok@hku.hk
Course Administration
Topics 1 6: Dr. Fiona Kwok
Topics 7 12: Dr. Sergio Lourenco
E-mail:
Foundations: types, geological
considerations and ground investigation
Srgio Loureno, HKU
18 April 2016
Contents
1.
2.
3.
4.
5.
2
Shallow foundations
Deep foundations
Common types of foundations in Hong Kong
Influence of geology in the choice and location
CIVL2006 Soil Mechanics
Topic 2: Soil Testing and Classification
Dr. Fiona Kwok
Room 521, Haking Wong Building
The University of Hong Kong
Tel: (852) 2859 2655
Email: fiona.kwok@hku.hk
2.1 Field Testing
Relevant Readings:
Knappett & Craig (2012): Chapters
Shear strength
stress paths
Srgio Loureno, HKU
04 April 2016
Civil Engineering group photo
Students and staff
Library steps
Monday, 11 at 14:30
2
Outline
Last lecture
Stress-strain behaviour of soils
Volumetric behaviour: contraction versus dilation
Stres
Shear strength of soils,
shear box test 1
Srgio Loureno HKU
17 March 2016
Outline
Introduction
Mohr-Coulomb failure criterion, cohesion and friction angle
Factors affecting c and
Exercise
Determination of c and
Shear box test
2
Procedures
Exercise
Shear
Shear strength
c and , drainage, CD, CU, UU, other tests
Srgio Loureno, HKU
31 March 2016
Outline
Triaxial tests
Mohr circle
Triaxial apparatus
Drained and undrained conditions
Determination of c and (in terms of effective stresses)
Exercise 1
Type of tes
Last lecture
Srgio Loureno, HKU
25 April 2016
Contents
Exam
Summary/revision
2
Exam
Equations to be provided
Units
Stress or pressure: kN/m2 or kPa
Unit weight: kN/m3
Cohesion units: kN/m2 or kPa
Detail the answer, show all steps, state the assumptions (i
Exercise
The data obtained in consolidated undrained tests on clay samples taken below ground
level are:
Cell pressure during
consolidation (kPa)
462
689
At failure
Principal stress difference (kPa) Pore water pressure (kPa)
269
255
400
379
Determine the
CIVL2006 Soil Mechanics
Topic 4: Effective Stress
Dr. Fiona Kwok
Room 521, Haking Wong Building
The University of Hong Kong
Tel: (852) 2859 2655
Email: fiona.kwok@hku.hk
4.1 Stresses in Soils
Relevant Readings:
Knappett & Craig (2012): Chapter 3
Atkinson
Differential Levelling
Basic Theory
3. Level staff on B 4. Foresight (FS) reading is the last reading (S2) 5. Move instrument to new position
Differential Levelling
Basic Theory
1. Level staff on A 2. Backsight (BS) reading is the first reading (S1)
5. Mo
Traverse
Closed traverse
Closed traverse can be one that begins and ends at the same point (a loop) For a loop traverse, the loop distances and angles can be obtained by proceeding consecutively around the loop in a clockwise or anticlockwise manner
Chap
Reciprocal Levelling
Let the true difference in levels between A and B be H, c1 be the effect of collimation error between A and B, and c2 be the effect of collimation error between B and A At instrument position I1, H = a1 ( b1 c1) (1) At instrument posi
Course Lecturers
Prof. L.G. Tham
Room 6-28, Haking Wong Building Tel.: 2859-1965 Fax.: 2559-5337 E-mail: hrectlg@hkucc.hku.hk LG2-08, Composite Building Tel.: 2859-2662 Fax.: 2517-0124 E-mail: szenn@hku.hk To download lecture notes: http:/web.hku.hk/~sze