- 410 course overview 2010

1CIVL 410FOUNDATION ENGINEERING I

Overview CIVL 410FOUNDATION ENGINEERING I

LECTURE 1COURSE SUMMARY

CIVL 410

Lectures: Tuesday and ThursdayTime: 8:00 am to 9.20 amLocation: Geography 100


Instructors: J. A. Howie, Ph.D., P.Eng.Marker: Mark Styler, M.Sc.

About me B.Sc. Civil Engineering, University of Glasgow, 1976 M.Sc. Civil (Geotechnical) Engineering, Queens, 1978 Ph.D. Civil (Geotechnical) UBC, 1991 14 years experience in geotechnical consulting practice

in Scotland, Hong Kong, Alberta, B.C. Registered Professional Engineer in British Columbia


Research interests Site Characterization (in situ and laboratory testing), Ground Improvement, Foundation Engineering.

Joined UBC Civil Engineering Department in August 1997

[email protected] Room 2019 Office hours TBA.

Foundation Engineering Applying engineering science, empirical rules and

experience to analysis, design and construction of foundations, slopes and retaining structures.

Determining the best way of transferring loads from structures to the ground, including consideration of how b t t th it t t lti t d


best to prepare the site to meet ultimate and serviceability limit state requirements.

Fundamental basis of all analyses is ENGINEERING MECHANICS.

Requires a sound background in soil and/or rock mechanics for successful practice.

2History of foundation engineering

Historically foundation design was conducted by a Master Builder who was usually responsible for the whole structure

Foundation design was largely based on


Foundation design was largely based on experience, empirical rules of thumb, and intuition.

Some large and elaborate structures were built in this manner.

Early foundation designEmpirical

procedures OK if they are applied to

similar soil and structure


structure conditions. However, if applied to different

conditions, the results can be

disastrous.

Or a windfall for tourism


Emergence of Modern Foundation Engineering

Soil mechanics and foundation engineering as we know it today started in the early to mid-1900s


Baumann (1873) Terzaghi (1930s)

Foundations started being designed based on logical scientific principles rather than only on empirical rules and experience

3The Foundation Engineer

Must be multi-disciplinary and possess a working knowledge of the following areas Structural Engineering - Understand the sources

and nature of structural loads and the structures tolerance for foundation movements


Geotechnical Engineering understand engineering properties of soil, rock, and groundwater

Geology understand the geneses (and variability) of soils and rocks

Construction Engineering understand available construction methods

Design Team Owner Architect Structural Engineer Geotechnical Coordination Coordination


Geotechnical Engineer

Mechanical Engineer Electrical Engineer & many others

and and communication communication between team between team members are members are paramountparamount

Foundation Engineer

Usually building foundations are designed by both the geotechnical and structural engineers

In this course we are dealing primarily with


In this course we are dealing primarily with the geotechnical aspects of foundation engineering

Tools for Foundation Engineering

Soil and rock mechanics Codes and standards Experience and empiricism Engineering journals


g g j Canadian Geotechnical Journal ASCE Journal of Geotechnical and Geoenvironmental

Engineering Geotechnique

Continuing education Computers

4Course Objectives Appreciate the place of geotechnical engineering in the

overall process of site development. Understand the process followed in a geotechnical

evaluation and be able to undertake a simple one. Understand how basic soil mechanics theory (learned in

CIVL210 & CIVL311) is applied in foundation design and construction.


Be able to design simple shallow and deep foundations and retaining walls to satisfy both ultimate and serviceability limit states.

Appreciate the level of uncertainty inherent in both theoretical and practical design methods in geotechnical engineering.

Understand the importance of construction sequence and field review in the successful implementation of a foundation design.

Course Content Introduction

Foundation Engineering and the Geotechnical Evaluation Process Loading conditions, foundation performance requirements and

planning of site characterization What is the required performance of the engineering works and what are

the soil conditions at the site on which it is to be constructed? Interpretation of site characterization, site assessment and

approaches to site preparationIs the site suitable for its intended purpose? Can it be improved?


Is the site suitable for its intended purpose? Can it be improved? Considerations of stability and deformation under static and seismic loading.

Selection and design of Foundations Shallow Foundations Deep Foundations

Design and construction of earth retaining structures Gravity walls, embedded walls, excavation support

Final team exercise Recommendations for foundation scheme and construction sequence.

Course Format Lectures, assignments, individual and team based

quizzes, in-class exercises For each module:

Reading assignments covering all of the basic content of the material.L t i i th i t f th d l


Lectures summarizing the main concepts from the module. In-class quizzes (Readiness Assurance Processes or RAPs).

Taken as individuals then in teams Assignments and Team Exercises Guest Speakers and Movies Submissions

Final Team Exercise

Review of basic soil mechanics (effective stress, void ratio, relative density, etc.)

1a) Soil Mechanics & Geology Review

Review of geological


From Geological Survey of Canada

g gprocesses

51b) Foundation engineering, performance requirements and planning site characterization

Failure modes, working or allowable stress design (WSD,ASD), limit states design (LSD), performance based design


2a) Interpretation of site characterizationPrevious Information Site

Investigation


Laboratory testing

2 b) Site Assessment Seismicity Liquefaction Settlement Hazard Evaluation e.g.

slope stability


2c) Site Preparation Site grading

Retaining structures Engineered fills

Ground improvement Excavation and replacement Densification Preloading


63a) Shallow foundations Bearing Capacity Settlement Mat Foundations


3b) Deep Foundations

Pile Types Bearing capacity Settlement Load tests


Load tests PDA testing Group effects Lateral capacity

4 Retaining structures

Gravity walls Rigid and flexible

(e.g. MSE walls) Embedded walls Embedded walls Excavation support

Sheet pile walls Braced excavations Shotcrete and

anchorsOverview CIVL 410

FOUNDATION ENGINEERING I

Final Team Exercise - example Prepare a two to three page summary outlining your

recommended foundation scheme and the construction sequence that should be followed, including any recommendations for site preparation.

For example, if you are recommending preloading, should ground improvement against liquefaction also be carried out and should it be carried out before or after preloading?

Include recommended design bearing pressures or pile capacities, founding depth, pile length, etc. and state the anticipated differential settlements and resulting distortion.

Identify any construction issues that require consideration.


7Textbook Selected chapters from Soil

Mechanics and Foundations, 2ndEdition and Foundations and Earth Retaining Structures by Muni Budhu, Wiley Canada Custom Edition for UBC. Y ill b t d t h th b k


You will be expected to have the book Reading and question assignments

from the book will be given. Should be available in bookstore.

Vistawww.vista.ubc.ca

Course information will be posted on the CIVL410 Vista site.

All students are assumed to have access to this site


to this site.

Team Formation

Team formation survey posted GO THERE AND COMPLETE IT

T ill b i d b f fi t RAP


Teams will be assigned before first RAP

- 410 course overview 2010

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