Stellenbosch University, Dept of Civil EngineeringMon 16 - Tu 17 April 2018

Johannesburg, The Aviator Hotel Wed 18 - Fri 20 April 2018

Basic and advanced practical guidance for the design and construction of economical, leak tight and durable liquid retaining structures in reinforced or post-tensioned concrete.

3 CPD CREDITS

R 2500PD EARLY BIRD

LIQUID RETAINING STRUCTURES

UP TO FROM

Register: Complete last page & return Enquiries: civilcourses@sun.ac.za | 021 808 2080

Over three days the seminar aims to answer the most pertinent questions of the client, designer and contractor tasked with delivering liquid retaining structures in reinforced concrete. Engineers who attend should walk away with an understanding of the design considerations and process; and appreciation for aspects that need adequate on-site implementation, including mix design, joint choices, casting sequence, and repair. Post-tensioned reservoirs are treated as an advanced topic as is the comparison of BS 8007 to Eurocode 2.

• Day one provides detailed guidance on how to analyse and design liquid retaining structures for both load induced and restraint action.• Day two gives practical advice for successful implementation on site (do’s and don’t’s).• Day three (only in Johannesburg) covers advanced design concepts, incl. post tensioned reservoirs, crack models and standardisation (BS8007 vs EC2).

The seminar will equip the engineer with understanding of pertinent design assumptions, analysis options and how to use the output in design as well as practical considerations for successful implementation on site.

SEMINAR OBJECTIVE

SEMINAR FOCAL POINTSThe focus will be on:

• Conceptual design• Analysis options, use of output and the effect of boundary conditions• Design for load induced and restraint action (thermal & shrinkage)• Practical on-site advice to create durable and leak tight structures• Case studies• Repair of typical defects• Crash course on post-tension reservoir design• A comparison of BS 8007 vs Eurocode 2 provisions• Introducing software to aid in design according to BS 8007 or Eurocode; and for post-tension reservoir design.

Design examples will be provided.

PROGRAM

07:20 - 07:30

07:00 - 07:20

07:30 - 08:20

Welcome & Introduction

Robin Atkinson

Celeste Viljoen

09:30 -10:00 Drinks & Refreshments

Drinks & Refreshments

Lunch

OverviewTypical structures and models; Design stages; Forces, structural behaviour and critical sections; Most important design considerations

10:00 - 10:45 AnalysisPrimary analysis methods; Use of examples to compare analysis methods Robin Atkinson

10:45 - 11:15 Influence of boundary conditionsIntuition quiz - Influence of boundary conditions Tim Dubber

12:00 - 13:00

13:00 - 13:45 Basics of designDirect and Restraint action; Limit states; Useful references & Handbooks Robin Atkinson

14:30 - 14:50

15:30 - 16:10 Robin Atkinson

00:00 - 00:00

SPEAKERTIME

08:20 - 09:00 Robin AtkinsonConceptual designStructure shape, size and type; Main considerations

13:45 - 14:30 Tim Dubber

14:50 - 15:30 Design for restraint induced action Thermal & Shrinkage; Short & Long term considerations; Provisions of CIRIA C660; Reinforcement calculation Robin Atkinson

AYD I

16:10 - 16:30 Robin AtkinsonClosing remarks - Three DO's Three DON'TsThe three most important design aspects to get right; Avoid these three most common design mistakes

TOPIC

Registration and refreshments Note: In STELLENBOSCH the program starts 1 hour later.

Movement joints - to use or not to use?Design & construction; Cost, risk and maintenance considerations

11:15 - 12:00 AnalysisPractical application of analytical tools: Tables (Handling boundary conditions & example); FEA (Practical modelling options); Output form & use Tim Dubber

08:20 - 09:00 Tim DubberAction combinationsLoad cases to consider; Restraint induced action

Load induced crack width calculationsProvisions of SANS 10100-3; Tightness class selection; Crack width limit

Getting the BASICS right - DESIGN

PROGRAM

07:20 - 07:30

07:00 - 07:20

07:30 - 08:00

Welcome & Introduction

Robin Atkinson

Celeste Viljoen

09:30 -10:00

Lunch

Requirements for liquid retaining structuresEconomy; Leak tightness; Durability & other; Main aspects to control to achieve satisfactory performance

08:45 - 09:30 Ensuring DurabilityMix design; Alkali-Silica Reaction; Compaction; Curing and protection Robin Atkinson

10:00 - 11:30 Case studiesTypical problems; Discussion of the mistakes that contributed to the problems and how to avoid them

Erhard Kruger

11:30 - 12:30

12:30 - 13:15

13:15 - 14:00 Project specification guidelines Role and importance; Most important aspects to control to achieve satisfactory performance Erhard Kruger

14:00 - 14:30

15:15 - 16:00 Robin |Erhard|Celeste

00:00 - 00:00

Closure

SPEAKERTIME TOPIC

Registration & Refreshments Note: In STELLENBOSCH the program starts 1 hour later.

08:00 - 08:45 Robin AtkinsonPrevention of leakageConstruction joints do's & don'ts; Movement joints; Penetrations; Prevention of early age thermal cracking; Detection of floor leaks

14:30 - 15:15 RepairTypical defects; Practical recommendations for repair of typical defects

Panel discussionAvoiding typical problems, Design considerations, Joint specification, Geotechnical considerations etc.; Question & Discussion session

AYD I I Getting the BASICS right - IMPLEMENTATION

Construction aspects to consider during designPour sequence and its influence on restraint action; Positioning of joints; Detailing considerations Robin Atkinson

Drinks & Refreshments

Drinks & Refreshments

Robin Atkinson

PROGRAM

07:20 - 07:30

07:00 - 07:20

07:30 - 09:00

Welcome & Introduction

Tim Dubber

Celeste Viljoen

09:30 -10:00

Lunch

AnalysisTightness class and philosophy; Load combinations; Prestress and boundary conditions

10:00 - 11:00 DesignConcrete strength and wall thickness; Arrangement and sizing of buttresses Tim Dubber

11:00 - 12:00 ImplementationStressing sequence; Specification for prestress design and supply Tim Dubber

12:00 - 13:00

13:00 - 13:30

13:30 - 14:15 Crack width calculationThe South African perspective Erhard Kruger

15:00 - 15:30

16:15 - 16:45 Robin Atkinson

00:00 - 00:00

Closure | Discussion | Q&A

SPEAKERTIME TOPIC

Registration & Refreshments

09:00 - 09:30 Tim DubberDesignPrestress force profile

14:15 - 15:00 Robin Atkinson

15:30 - 16:15 Crack widths - Part IIEC2 formulae; Concrete stiffening; Mean concrete strain; Crack inducing strain; EC2 concrete stiffening limits; Strain adjacent to crack Robin Atkinson

AYD I I I PT tank design | Standards & models

BS 8007 vs EC2Comparative overview Robin Atkinson

Crack widths - Part ICrack zone; Fully formed system; End restraint system

Crack width limitsSelf-healing of cracks; Head/thickness flow rates; Full thickness cracks; Leakage vs durability

Drinks & Refreshments

Drinks & Refreshments

Crack models and Standardisation

Design of Post-tensioned tanks

Mr Robin Atkinson (BSc, CEng, FICE, FIStructE) is an experienced UK design engineer, currently a partner at HAC LLP in Bourne End, Bucks.

He specialises in the design of liquid retaining structures and lectures on the design of these structures to the British and Eurocodes. He has published several articles on the subject.

He is an IStructE 'Eurochampion'(representative on the Eurocodes) and is currently the Thames Valley Regional Group representative on IStructE Council and a member of the Engineering Practice committee. He also serves on the CIRIA C660 review committee

PRESENTERS

Robin Atkinson (CEng)Mr Tim Dubber (NHDip, PrTechEng) is an experienced South African design engineer. He is the founder of Res Spec Consulting, specialising in the design of liquid retaining structures.

He has designed over 30 large post tensioned reservoirs and has peer reviewed numerous complex designs.

He is a member of the WRC task group developing construction guidelines for liquid retaining structures.

Tim Dubber (PrTechEng)Mr Erhard Kruger (BEng, MEng, PrEng) is a South African design engineer with many years of experience in the design, construction and remediation of liquid retaining structures.

He is a member of the working group developing SANS 10100-3: The design of concrete liquid retaining structures where he champions the crack width provisions.

Erhard Kruger (PrEng)Prof Celeste Viljoen (PhD, PrEng) is an associate professor at the University of Stellenbosch, where she heads the Structural Risk and Reliability research group.

She is widely involved in structural standardisation, being a member of the SABS Technical Commitee for Concrete Structures, convenor of the working group for SANS 10100-3: The design of concrete liquid retaining structures and a member of the International Joint Committee on Structural Safety.

Celeste Viljoen (PrEng)

CPD CREDITS

Please register online at http://apps.sun.ac.za/SCD/ApplicationForm.aspx?offeringid=4fc8445f-ba1a-e811-9d66-0050568000ff

You are welcome to attend any combination of days. Please fill in the registration details (next page) and return this by email to Janine. She will generate your invoice accordingly.

REGISTRATION

PAYMENT

WE LOOK FORWARD TO WELCOMING YOU AT THIS COURSE

The seminar is accredited for 1, 2 or 3 Continued Professional Development credit with the ECSA, according to the number of days you attend.

Early Bird: 15% discount Payment must be received by 16 March 2018

Payment must be received 5 working days prior to the course date~ Attend any number or combination of days. ~

1 Day: R 3800.00

2 Days: R 6800.00

3 Days: R 8800.00

Enquiries: Janine / Tsholofelo Tel : 021 808 2080 Email: civilcourses@sun.ac.za

16 – 17 & 18 – 20 April 2018

Title Surname Name

You wish to attend: (please circle)

Stellenbosch: Day 1 Stb 16 April Day 2 Stb 17 April

Johannesburg: Day 1 Jhb 18 April Day 2 Jhb 19 April Day 3 Jhb 20 April

Meal preference (X) Halaal: Vegetarian: Other:

Your E-mail: Your Cell:

Company name & address Tel no:

Invoice for attention:

REGISTRATION DETAILS

“Cancella ons will be accepted in wri ng and without penalty, up to 10 working days prior to commencement of the course. Par cipants cancelling in wri ng less than 10 working days prior to commencement of the course will be liable for a 50% cancella on fee. Following registra on without a endance and without wri en

cancella on, delegates will be held responsible for the full course cost.”

I

SIGNED: ___________________________________________________ DATE: ______________________________________

Please note there is also an online registration process—link will be forwarded

LIQUID RETAINING STRUCTURES

DESIGN & CONSTRUCTION