SIVA 1 Introduction to Geotechnical Engineering ground Duration: 11 min 56 s

SIVA Copyright  Typical Geotechnical Project construction site Geo-Laboratory ~ for testing Design Office ~ for design & analysis soil samples soil properties design details

SIVA Copyright  bed rock firm ground Shallow Foundations ~ for transferring building loads to underlying ground ~ mostly for firm soils or light loads

SIVA Copyright  2001 Shallow Foundations

SIVA Copyright  bed rock weak soil Deep Foundations PILEPILE ~ for transferring building loads to underlying ground ~ mostly for weak soils or heavy loads

SIVA Copyright  Deep Foundations Driven timber piles, Pacific Highway

SIVA Copyright  Retaining Walls ~ for retaining soils from spreading laterally Road Train retaining wall

SIVA Copyright  Earth Dams ~ for impounding water soil reservoir clay core shell

SIVA Copyright  Concrete Dams reservoir soil concrete dam

SIVA Copyright  Concrete Dams Three Gorges Dam, Hong Kong

SIVA Copyright  Concrete Dams

SIVA Copyright  Earthworks Roadwork, Pacific Highway ~ preparing the ground prior to construction

SIVA Copyright  Construction hazard ~ an unwelcome visitor at an earthwork site. A dead Anaconda python (courtesy: J. Brunskill) What does it have to do with Geo?#!

SIVA Copyright  Geofabrics ~ used for reinforcement, separation, filtration and drainage in roads, retaining walls, embankments… Geofabrics used on Pacific Highway

SIVA Copyright  Reinforced Earth Walls ~ using geofabrics to strengthen the soil

SIVA Copyright  Soil Nailing ~ steel rods placed into holes drilled into the walls and grouted

SIVA Copyright  Sheet Piles ~ sheets of interlockingsteel or timber driven into the ground, forming a continuous sheet ship warehouse sheet pile

SIVA Copyright  Sheet Piles ~ resist lateral earth pressures ~ used in excavations, waterfront structures,..

SIVA Copyright  Sheet Piles ~ used in temporary works

SIVA Copyright  Sheet Piles ~ interlocking sections

SIVA Copyright  Cofferdam ~ sheet pile walls enclosing an area, to prevent water seeping in

SIVA Copyright  Landslides

SIVA Copyright  Shoring propping and supporting the exposed walls to resist lateral earth pressures

SIVA Copyright  Tunneling

SIVA Copyright  Blasting For ore recovery in mines

SIVA Copyright  Ground Improvement Impact Roller to Compact the Ground

SIVA Copyright  Ground Improvement Sheepsfoot Roller to Compact Clay Soils

SIVA Copyright  Ground Improvement Smooth-wheeled Roller

SIVA Copyright  Ground Improvement Big weights dropped from 25 m, compacting the ground. Craters formed in compaction

SIVA Copyright  Environmental Geomechanics Waste Disposal in Landfills

SIVA Copyright  Instrumentation ~ to monitor the performances of earth and earth supported structures ~ to measure loads, pressures, deformations, strains,…

SIVA Copyright  2001 Soil Testing Cone Penetration Test Truck – Lavarach Barracks, Townsville

SIVA Copyright  2001 Soil Testing More Field Tests Standard Penetration TestVane Shear Test

SIVA Copyright  Soil Testing Triaxial Test on Soil Sample in Laboratory

SIVA Copyright  Soil Testing Variety of Field Testing Devices

SIVA Copyright  Soil Testing Being Pushed around by my Supervisors Purdue University, USA

SIVA Copyright  Typical Safety Factors Type of DesignSafety Factor Probability of Failure Earthworks /500 Retaining structures /1500 Foundations /5000

SIVA Copyright  Some unsung heroes of Civil Engineering… … buried right under your feet. foundations soil exploration tunneling

Great Contributors to the Developments in Geotechnical Engineering

Karl Terzaghi C.A.Coulomb WJM Rankine A.Casagrande L. Bjerrum A.W.Skempton G.F.Sowers G.A. Leonards Siva’s teacher in USA – deserves gold frame

Geotechnical Engineering Landmarks

SIVA Copyright  Leaning Tower of Pisa Our blunders become monuments!

SIVA Copyright  Hoover Dam, USA Tallest (221 m) concrete dam

SIVA Copyright  Petronas Tower, Malaysia Tallest building in the world

SIVA Copyright  and…. Monuments

SIVA Copyright  Geo-engineering at JCU CS2005 Geo-engineering I CS3002 Geo-engineering I CS4001 Geo-engineering I Postgrad MEngSc/PhD

SIVA Copyright  Practicals ~ five practical sessions ~ closed footwear must be worn in the lab

SIVA Copyright  Laboratory Staff Neville Hines & Rudd Rankine

SIVA Copyright  Quizzes  about 4-6, 50 minutes each  open book How? Why?  to reinforce main points  provides a wake up call  form of assessment

SIVA Copyright  Past CS2005 Grades HD ? D C P P N X Total

SIVA Copyright  Some Suggestions Attend the lectures. Develop a good feel for the subject. It takes longer to understand from the lecture notes It is practical, interesting and makes lot of sense.

SIVA Copyright  Some Suggestions Work in groups.

SIVA Copyright  Some Suggestions Thou shall not wait till the last minute.

SIVA Copyright  Exams My mama always said, “Exam is like a box of chocolates; you never know what you are gonna get”