Post-Tension Design and Construction

Pricing

Members Price
Non-Member Price
Learning Module
$125.00
$210.00
Membership
$250.00
Total (including GST)
$125.00
$210.00
 

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Overview

Held in partnership with the Post-Tensioning Institute of Australia, this webinar provided detailed updates and information in the efficient and economical design of post-tensioned structures, along with an understanding of what is required from a design perspective to ensure good construction practice. It will present some of the latest developments in construction technology, design procedures, and software tools available in Australia.

Our presenters include one of Australia’s pre-eminent design experts in post-tension and two leading practitioners who understand the design requirements needed for good construction practice.

Post-tensioning has been widely used in Australia for the past 40 years for building and civil engineering structures. During this time, there have been significant advances in design and construction techniques and Australia has been at the forefront of the industry throughout this time.

Held in partnership with the Post-Tensioning Institute of Australia, this learning module provides detailed updates and information in the efficient and economical design of post-tensioned structures, along with an understanding of what is required from a design perspective to ensure good construction practice. It will present some of the latest developments in construction technology, design procedures, and software tools available in Australia.

Our presenters include one of Australia’s pre-eminent design experts in post-tension and two leading practitioners who understand the design requirements needed for good construction practice.


Webinar Package Standard Inclusions
This webinar will include all of the material from the National seminars:

  • Ability to watch the recorded webinar (presenter audio and Powerpoint presentation) at your own pace over a 90-day period, with the option to rewind, pause, forward and resume to where you’ve left off at a later date
  • Speaker presentations in PDF
  • Speaker notes in PDF

Presenters

Peter Dux
Emeritus Professor Dux is a leading expert in the design of pre-stressed and reinforced concrete structures, and concrete technology. He advises in the design of reinforced and prestressed concrete structures and assessment of concrete structures, durability investigations, repair specification and preparation of specifications for new works.  His consulting output includes some 200 specialist reports to government, engineering consultants, lawyers and industry involving regional, national and international projects.

A notable example of Emeritus Professor Dux’s consultancy work includes advising on the structural integrity of one of Brisbane’s major bridges. Emeritus Professor Dux led an investigation into the structural safety of the Captain Cook Bridge after it was reported that thousands of steel reinforcing bars on the bridge had been damaged putting the structure at risk.

Emeritus Professor Dux has been an invited keynote speaker at national and international engineering conferences. He often addresses professional groups in relation to the design and durability of concrete structures as well as construction practice.


Haydn Kirrage
Haydn Kirrage is the General Manager of Australian Prestressing Services in NSW.
His responsibilities include the performance of the company in the areas of Building and Civil works in both construct only and design and construct projects.
 
He holds a Civil Engineering degree from the University of Wollongong and a Master’s degree in Structural Engineering from the University of New South Wales.
 
Haydn has 20 years’ experience in prestressed concrete including 5 years in the Middle East.
Currently he also holds the position of Technical Director on the board of the Post-Tensioning Institute of Australia having previously been a member of the Technical Committee for number of years.


Shaun Sullivan
Shaun Sullivan is a structural engineer with 16 years’ experience, including 13 years in post tensioning with SRG Limited, which was formerly Structural Systems.  In his time at SRG, Shaun spent 11 years as the Engineering Manager responsible for all designs for the NSW division.  His current position is Business Development Manager of the NSW post tensioning business of SRG Limited.

He holds a Civil Engineering degree from the University of Technology.   In 2011, Shaun and 2 colleagues at SRG conducted research, believed to be the first of its kind, into PT Duct Temporary Movement Joints and Shaun presented a paper based on the research at the Concrete Institute of Australia bi-annual conference, Concrete 2011.  Shaun is a member of the technical committee of the Post-Tensioning Institute of Australia.


Topics

Session 1.1 - Prestressed Concrete Basics (Emeritus Prof. Peter Dux) - 22 minutes
  • ​Concepts
  • Material Properties
Session 1.2 - Prestressed Concrete Basics (Emeritus Prof. Peter Dux) - 16 minutes
  • The effects of prestressing on determinate structures
  • The effect of prestressing on indeterminate structures
Session 2 - Selection of Prestress (Emeritus Prof. Peter Dux) - 32 minutes
  • Basic data
  • Stress limits
  • Maximum eccentricity
  • Prestress losses
  • Stresses from applied loading
  • Load balancing approach
Session 3 - Calculation of losses (Emeritus Prof. Peter Dux) - 20 minutes
  • Friction loss
  • Draw-in at wedges
  • Elastic shortening loss
  • Shrinkage loss
  • Creep loss
  • Relaxation loss
  • Summary
Session 4 - Strength in bending (Emeritus Prof. Peter Dux) - 13 minutes

Session 5 - Shear (Emeritus Prof. Peter Dux) - 14 minutes

Session 6 - Deflections (Emeritus Prof. Peter Dux) - 18 minutes
  • Cracked section response
Session 7 - Indeterminate structures (Emeritus Prof. Peter Dux) - 33 minutes
  • Concordance
  • Transformations
  • Selecting a trial cable profile
Session 8 - Metal Deck Formwork in PT Building Structures (Haydn Kirrage) - 28 minutes
  • Metal Deck Formwork (MDF)
  • Categorization of MDF systems
  • MDF Systems
  • Concrete frames for MDF
  • Advantages of MDF
  • When should we use MDF?
  • MDF's effect on the Strength and Serviceability of PT slabs
  • Design of MDF slabs for Fire
  • Consideration for Lateral Load Distribution
  • MDF Slabs and Crack Control
  • MDF Slabs and Design Life/Durability
  • Detailing
  • Safety in Construction
  • Summary
Session 9 - Truncation of PT Tendons & Demolition of PT Structures (Haydn Kirrage) - 29 minutes
  • Development Length of a PT Tendon
  • Live End Anchorage
  • Dead End Anchorage
  • What are Tendon Truncations?
  • When should truncations be used?
  • Post formed holes
  • Truncations in two ways slabs
  • Truncations in one way slabs/bands
  • What about tendon grout?
  • What about bursting reinforcement?
  • Tendon truncations: PTIA recommendations
  • Special cases
  • Anchorage Proximity Restrictions
  • Oops... I've hit a tendon
  • Full scale testing
  • Builder/Developer
  • Demolition of PT Structures
    • A specialist advice area
    • Pre-compression
    • Tensile forces in tendons
    • Anchorage locations
  • Summary
Session 10 - Detailing for Restraint (Shaun Sullivan) - 31 minutes
  • What is Restraint and where does it come from?
  • Restraint in Post-tensioned structures
    • Global movements
  • Restraining Elements
    • Detailing
    • Design & Co-ordination
    • Release mechanisms
    • Temporary Movement Joints (TMJ)
  • Summary
Session 11 - Watertight Concrete (Shaun Sullivan) - 29 minutes
  • Where do we use post-tensioned watertight slabs?
  • Waterproof vs. watertight
  • How do we achieve watertight concrete?
Session 12 - The Development of PTIA Recoomended Grouting Practices for Monostrand Tendons​ (Haydn Kirrage) - 20 minutes
  • Consequences of Inaction?
  • Why do we grout tendons?
  • When should tendons be grouted?
  • Grout constituents
  • Performance criteria for grouts
  • QA/QC
Session 13 - Prestressed Concrete Design Software (Shaun Sullivan) - 19 minutes