IGS Delegate member cost $250

Non – IGS delegate member cost $300

Registration link www.....

The aim of this 1-day symposium is to share knowledge on the most recent developments within the subject of mechanically stabilised walls, embankments on soft soils and seismic performance of geosynthetic reinforced soil structures. The keynote address will be presented by Dr Richard Bathurst who has carried out leading research in North America into the use of geosynthetic reinforcement in earth retaining wall systems, numerical modelling, seismic performance and design of these systems. The symposium will include a session from the New Zealand Transport Agency (NZTA) on the Bridge Manual requirements for geosynthetics reinforcement and a session on conformance testing of geosynthetics to validate performance of geosynthetics in highway applications.

This Symposium offers engineers the opportunity to improve their knowledge and understanding in geosynthetic engineering for highway structures from leading experts in their fields.

Confirmed speakers

Prof. Richard Bathurst (Queen’s University, Canada)Geosynthetics in EQ State of Research and Practice

Dr Misko Cubrinovski (Canterbury University, NZ)Geosynthetics Performance in Earthquakes

Chris Lawson (TenCate Asia)Geosynthetics in Reinforced Embankments

Stuart Finlan (NZTA) Geosynthetic Compliance with Bridge Manual Requirements

Warren Hornsey (TRI, Australia)Geosynthetics Quality Assurance

Auckland Monday 15 May 2017Ellerslie Racecourse80 Ascot Ave, Remuera, Auckland 1051

Christchurch Wednesday 17 May 2017Novotel52 Cathedral Square, Central Business District Christchurch 8011

Symposium fees and details

For more information contact: Dr Kasia Zamara kzamara@tonkintaylor.co.nz | 027 453 9311

Geosynthetic Reinforcement in Highways Seminar 2017

The International Geosynthetic Society (IGS) is pleased to announce the first New Zealand IGS Symposium

IGS Delegate member cost $250

Non – IGS delegate member cost $300

Registration link www.acigs.org/events/

Prof. Richard Bathurst (Queen’s University, Canada):

Dr. Bathurst is Professor of Civil Engineering at

the Royal Military College of Canada and Queen’s

University. Dr. Bathurst’s current research activities

are focused on the use of geosynthetic and metallic

reinforcement in earth retaining wall systems,

numerical modelling, seismic performance and design

of these systems, probabilistic design of reinforced

and unreinforced soil structures, reliability-based

design, and load and resistance factor design (LRFD)

calibration of soil-structures. Dr. Bathurst serves on

committees of the Canadian Highway Bridge Design

Code and the National Building Code of Canada.

Recent developments in MSE wall technologiesMechanically stabilized earth (MSE) walls including

structures with steel and geosynthetic reinforcing

elements are now well-established technologies.

The lecture gives a brief historical overview and

then a review of current approaches to the design

of these systems including strength-based limit

equilibrium methods and reinforcement stiffness-

based methods. Emerging reliability-based design

approaches are discussed. The use of measured

reinforcement loads from instrumented field

structures to quantify the accuracy of different design

methods with respect to predicted reinforcement

loads under operational conditions is demonstrated.

The lecture will also discuss design and construction

of bridge abutments including the new FHWA

Geosynthetic Reinforced Soil Integrated Bridge

System (GRS IBS) approach, seismic design and the

use of geofoam seismic buffers for mitigation of

earthquake-induced dynamic loads.

Lessons learned from full-scale model MSE wall tests at RMCA long-term research program was carried out at the

Royal Military College of Canada (RMC) between 1998

and 2011 with the objective to gather quantitative

data on the behaviour of mechanically stabilized earth

(MSE) walls under carefully controlled (laboratory)

conditions. Instrumentation included strain gauges

and extensometers attached to reinforcement layers,

connection load cells, horizontal and vertical toe load

cells, earth pressure cells and displacement measuring

devices at the wall face and at the backfill surface. This

lecture describes the experimental design, examples

of measured data, how the data have been used to

verify numerical models and to guide the development

of reinforcement stiffness-based design methods for

internal stability design of MSE wall systems.

Dr Misko Cubrinovski (Canterbury University,

New Zealand): Misko Cubrinovski is a Professor of

Geotechnical and Earthquake Engineering at the

University of Canterbury, Christchurch. His expertise

is in geotechnical earthquake engineering and in

particular problems associated with liquefaction,

seismic response of earth structures and soil-

structure interaction. He is the lead author of two of

the guidelines in the series of MBIE-NZGS guidelines

for Earthquake Geotechnical Engineering Practice in

New Zealand (2016–2017).

Geosynthetics performance in Earthquakes Results from a series of shake table tests on scaled-

down geosynthetic-reinforced soil (GRS) walls

with full-height rigid (FHR) facing are presented

and discussed. Global response features, modes of

failure and localized deformation were recorded,

visualized and interpreted through the use of high-

speed imaging and Geotechnical Particle Image

Velocimetry analysis. This allowed interpretations

regarding strain localisations and progression of

shear bands within the retained backfill.

Geosynthetic Reinforcement in Highways Seminar 20171st in New Zealand IGS Symposium

Keynote Technical Presentations

Chris Lawson (TenCate Asia): Chris Lawson is the

Technical Director for Ten Cate Geosynthetics Group.

He has worked in the field of geosynthetics for

35 years in Australia, Europe, North America and

Asia. He has served on a number of international

organizations developing Standards and Codes of

Practice, including BS8006 a British Standard Code

of Practice for Soil Reinforcement. His experience

includes large scale geosynthetics projects in the

field of embankments, reinforced soil techniques and

coastal, hydraulic and environmental engineering

across the world.

Geosynthetics in Reinforced EmbankmentsThe presentation covers key design aspects for three

applications of basal reinforced embankments: Static

design of basal reinforced embankments on soft

foundations; use of basal reinforcement to improve

the seismic stability of embankments; and static

design of basal reinforced piled embankments (load

transfer platforms).

Stuart Finlan (NZTA): Stuart is the NZ Transport

Agency’s Principal Geotechnical Engineer working

within their technical services structures team. He

is involved with the on-going development of the

Bridge Manual, Structures Design Guide and other

technical and procurement specifications and takes

an overview of geotechnical aspects of the Agency’s

construction projects.

Geosynthetics compliance with Bridge Manual RequirementsThe release of the Bridge Manual 3rd edition has

placed a higher emphasis around the acceptance

of geosynthetic reinforcement for New Zealand

Transport Agency (NZTA) projects. The presentation

looks at the development of the Bridge Manual and

reasons for introducing an approval process for

geosynthetic materials.

Warren Hornsey (TRI, Australia): Professional

Civil Engineer graduated from Natal University,

South Africa in 1991. Currently the director of TRI

Australasia Pty. Ltd. 20 years specialist experience in

geosynthetic research & development and design of

structures involving geosynthetics.

Conformance testing of GeosyntheticsThe presentation will cover geosynthetic quality

assurance and the reasons why construction quality

assurance has become standard practice in the

industry. The presentation includes information on

how information in supplier data sheets is obtained

and pitfalls of relying solely on these data sheets.

Geosynthetic Reinforcement in Highways Seminar 20171st in New Zealand IGS Symposium

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