Viewpoint - Office Technique pour l`Utilisation de l`Acier

Transcription

Diary
STEEL EDUCATION GETS COMPETITIVE
10 and 11 March :
The competition season is open : organised annually by Otua for schools
of architecture and engineering, the purpose of these competitions is
to enable students to discover, work with and appreciate steel
through the study of practical examples.
And in particular to give them hands-on experience of steel’s incomparable
ability to provide aesthetic and creative solutions to the most demanding
technical requirements. The assignments proposed – by Otua or by the
schools – are extremely varied: design of a transport shelter, a travelling
exhibition hall, a high-rise building…
This year, the Saint Etienne, Versailles, Strasbourg, Paris Val de Seine,
Paris Belleville and Clermont Ferrand schools of architecture are taking
part; and, for the engineers, the Clermont Ferrand University of Science
and Technology engineering school and the ESTP (specialist public works
and construction school ).
HQE ® conference at Reims.
F O R F U R T H E R I N F O R M AT I O N
APK General Assembly, followed
by a visit to the Valenton water
treatment plant.
Gérard Delassus TÉL.: + 33 1 41 25 59 52
[email protected]
OTUA’S EDUCATIONAL OFFER
Within the framework of Acier Force Neuf, Otua is continuing to organise
lectures in educational establishments. An operation that continues to
gather momentum, with almost three times as many presentations to
students in 2004-2005 as in 2002-2003.
Otua and “Acier Force Neuf” are now beginning to be known and sought
after in schools of architecture, engineering and design. The Acier Force
Neuf exhibition continues to tour, but it is now the lectures that are most
in demand. According to the school’s focus, they may cover steel in
general, design, packaging, the automobile, construction (structures,
rehabilitation, sustainable development, bridges…), or several themes at
once. These lectures are provided by Otua personnel, by Otua’s members
or by outside experts.
Exhibitions
OTUA’S ACTIVITIES
IN SCHOOLS
Lectures
Visits
Architectural
competitions
This annual conference, in which
Otua (a member of the Association
for High Environmental Quality in
Construction since June 2004)
participates, will have as its theme
“High environmental quality,
an instrument for sustainable
development”.
APK General Assembly,
20 April :
Seminar on the theme :
“What method of galvanisation,
for what types of steel and what
finishes?”, organised by the
Conservatoire National des Arts
et Métiers.
With a contribution by Suzanne
Mathieu, Otua’s surface treatment
expert.
6 to 8 December :
Footbridge 2005, in Venise
Three years after it was first held,
this year the symposium will be
organised by the partnership of
Enzo Siviero, bridge expert and
professor at the Venice University
Institute of Architecture, and Otua.
THREE APK PUBLICATIONS
This new version of the multimedia presentation of the steel cycle
examines in greater detail the downstream aspects of steel production :
annealing, cold rolling, electrolytic deposition and dip coating, organic
coatings. A chapter is also devoted to stainless steel. It can be accessed
on the Otua website, under the heading “Tout sur l’acier”.
A CD-Rom version is available for teachers.
Valérie Dusséqué TÉL.: + 33 1 41 25 83 61 - [email protected]
Marie-Christine Ritter TÉL.: + 33 1 41 25 67 47 - [email protected]
February 2005 thematic case study
STEEL SURFACE TREATMENTS
From mechanical operations to paint coatings, there are numerous treatments
to protect steel, to enhance its appearance or to impart specific properties.
A review of the surface treatments employed in construction, their
execution and the regulations to which they are subject.
Case study available on www.otua.org, Publications section,
in English and French.
Education - Training
Diary
Just out
see the www.otua.org website,
Expertises - Ponts et ouvrages d’art
section and the www.iuav.it/footbridge
2005 website.
INFOTUA IS THE OTUA NEWSLETTER
PUBLISHERS :
SYLVIE PETETIN AND JOËLLE PONTET
EDITORIAL DIRECTOR : ANNE LE CORNEC
TRANSLATION : TOM BISHOP
GRAPHIC DESIGN AND LAYOUT : MR CHARLY
PRINTER : ATELIERS DONNADIEU
THE ENTIRE OTUA TEAM CONTRIBUTED TO
THE PRODUCTION OF THIS ISSUE.
OTUA
( OFFICE TECHNIQUE POUR L’UTILISATION DE L’ACIER )
IMMEUBLE PACIFIC- 11 COURS VALMY
92070 LA DÉFENSE CEDEX (FRANCE)
http://www.otua.org
Thematic case study
steel
N°
Viewpoint
2004 was a hectic year, which ended on a high
note with the official opening of the Millau
viaduct, which constituted and will continue to
constitute a superb communication vehicle for
steel and for Otua.
2005, which promises to be just as busy, will
be the year of Europe: with the European IPO
network coming up to speed, the launch of a
European architectural review that will take
the place of Acier Pour Construire, and more
intensive briefing concerning the Eurocodes.
Apart from our European undertakings, our
priorities are :
to continue to provide construction professionals with demonstrations of steel’s performance. In the programme for 2005, 9 technical
seminars and site visits to win over those who
do not yet make sufficient use of steel and to
provide on site practical solutions to questions
relating to fire engineering, rehabilitation, the
Eurocodes…
to pursue our activities in schools of engineering, architecture and design, in order to
afford steel the place that it deserves in the
minds of the young. Here too, we will promote
familiarisation with our material by means of
practical case studies.
Just out
in
Newsletter
16 March :
Between 2002 and 2005, Otua increased
Valérie Dusséqué TÉL.: + 33 1 41 25 83 61 its partnerships with schools of engineering,
architecture and design, and in particular
[email protected]
boosted the number of lectures.
“L’ACIER DANS TOUS SES ÉTATS”, 2nd EDITION
Experts
see the www.assohqe.org.
Three APK publications: two CD-ROMs (Nos. 36 and 38), with, among other
things, numerous photos of the Millau viaduct construction operation,
and a presentation on the building of the Agbar Tower in Barcelona,
designed by Jean Nouvel. And a DVD (No. 37) on steel construction
fabrication techniques, produced by a student at the Versailles school of
architecture, Manuel Ragons (who was awarded the 2004 “Prix des cahiers
de l’APK” for this project).
Technical
Advisory Bureau
for Steel Users
to increase our support for users, principally
through our website. The aim is that it should
offer them easy navigation to all the tools and
information that they require for steel selection
and processing.
New services will be made available to them :
a presentation of structural sections with
their dimensional characteristics and static
properties, a surface treatments glossary,
an enhanced “equivalent grades” service.
Our ambition for 2005 : to disseminate more
widely, through InfOtua, our members’
accomplishments, products and landmark
projects in order fully to perform our role as
the leading champion of steel in construction,
bridges and civil engineering structures, engineering and industry.
We count on you in this joint endeavour to
highlight our material’s most outstanding
references. And don’t forget to provide us
with your ideas and feedback, as it is this that
will enable us to improve our performance,
although we are very pleased that the vast
majority of your replies to the questionnaire
in InfOtua 7 express your total satisfaction.
Joëlle Pontet,
MANAGING DIRECTOR OF OTUA
8
solutions
February 2005
Bridges and civil engineering
structures
MILLAU VIADUCT :
A TRIUMPH OF
STEEL
In the glare of the media,
the Millau viaduct was
officially opened on 14
December 2004, starting a
new page in the histories
of the region and of
bridges. Another look at
steel’s place in this
exceptional structure and
the role played by Otua,
from its design to its
construction.
An architectural and technical feat, a media event, a major influence
on traffic trends and the region’s economy, the viaduct is also a
magnificent testimonial for steel. A prime vehicle for highlighting,
particularly in the minds of the young, the bold, high-tech, innovative
aspects of steel construction, for demonstrating that it facilitates
soul-stirring technological and human adventures.
In terms of dimensions, quantities, build time, performance… figures
abound, superlatives proliferate. And when it comes to records, steel
cannot be equalled.
In all, 62,550 tonnes of steel were used in the
construction of the viaduct.
100% of the steel in the deck, the pylons
(excluding cables and rebars) and the temporary
piers was supplied by members of Otua :
principally Dillinger Hütte GTS, and Arcelor.
Photos : Daniel Jamme. Millau pour CEVM. Archi : N. Foster
E d u c a t i o n - Tr a i n i n g
The choice of a steel solution
While the bridge design was determined
following ten years of studies prior to
construction, the choice of material
remained the responsibility of the
builder and concessionaire. It was the
steel solution that finally won over
the Eiffage group, who secured the
tender, as the only one capable of
fulfilling the draconian constraints
and requirements that had been laid
down for the structure :
- to guarantee a minimum service life
of 120 years ;
- to carry in total safety an estimated
average traffic volume of 11,000 vehicles
per day, and withstand winds capable of
attaining speeds of 250 kph (156 mph) ;
- to integrate harmoniously into the landscape,
punctuating the view without obstructing it ;
- and of course to be built within the allotted
construction time.
Strong but slender
Steel possessed the ideal properties to satisfy these
requirements :
- Durability and stability over time ;
- Ideal compromise between mechanical performance
and low weight, in other words an excellent
strength/volume ratio. The lightness of the deck
(36,000 tonnes, as opposed to 160,000 if it had
been built of concrete) made it possible to optimise
the dimensions of the pylons and to reduce the
number of stays required, thus enhancing the
structure’s slenderness and elegance.
Steel offered other advantages, particularly during
the construction stage :
- Greater safety and comfort for the
workforce, who constructed the vast
majority of the deck in workshops,
sheltered from the elements. 96% of
hours worked were at assembly sites
rather than at great height.
- Respect for the environment :
firstly because the construction site,
installed on what was to become the
motorway, scarcely encroached on
the adjacent fields; secondly because
the temporary piers that served to
support the structure during its
erection and for the launching of the
deck were all recovered for return to
the steelworks for recycling.
Construction
OTUA : CONSTRUCTIVE ADVICE
Traffic estimates are for an average of
11, 000 vehicles per day to use the viaduct.
High-performance steels
More than one-third of the steels
employed for the deck are high-yield
steel plates, in grade S 460 M or ML
(thermomechanically rolled plates).
Their advantage is that they afford a
significant reduction in weight due to
their excellent strength/weight ratio,
while retaining excellent weldability
(even at thicknesses of 100 mm) due to
their low carbon content. No preheating
of the welds was necessary throughout
the entire construction operation, with
the exception of possible drying operations to
eliminate condensation resulting from meteorological
conditions.
L’Otua, committed to the project
From the end of 1999, well before the result of the
invitation to tender, Otua committed itself to the
project through active promotion of the steel solution.
In partnership with CEVM (Compagnie Eiffage du
Viaduc de Millau), it then built – in steel! - the Millau
visitor centre, intended to receive visitors and
explain to them steel’s place in this project and in
bridges in general. It organised lectures and visits to
the viaduct for contracting authorities, specifiers,
construction companies, educators and students, as
well as major events such as the Steelbridge symposium,
which brought 350 people to Millau in June 2004
(see InfOtua No. 5). Finally, it published the steel
bridges review Ponts métalliques No. 23, which will
stand as a tribute to this legendary project.
height of 245 metres for the tallest pier (P2), which,
surmounted by its pylon, reaches a total height of
343 metres : world height record for a road bridge.
a span of 171 m to be crossed when the deck
was launched : another world record.
Jean-Michel Vigo
TÉL.: + 33 1 41 25 64 89
[email protected]
See steel bridges review Ponts métalliques n°23.
See also the Moniteur special feature (Issue
5272, dated 10 December 2004), with an
accompanying DVD published by Setra
(Highways technical studies unit).
See the websites www.dillinger.de, www.eiffel.fr,
www.viaducdemillaueiffage.com.
Pylons :
4,600 tonnes of steel.
Clermont Ferrand
Béziers
Temporary piers : 6,800 tonnes of steel.
Bridges and civil engineering structures
“I need a certain type of steel deck for my floor,
where can I obtain it?” “I have to combine steel and
stainless steel in a water pipe : what is the best way
of doing this to ensure optimal corrosion protection?”
“I have to rehabilitate a building dating from 1900 ;
I don’t know what steels were used at the time or the
procedure to adopt: can you advise me?”
According to the nature of the enquiry, Otua replies
by return, refers the enquirer to a specialist, or works
for several hours to formulate a bespoke response,
particularly if it necessitates producing a drawing
representing a section through a facade, pre-dimensioning of a frame or examination of the technical
specifications drawn up by the contracting authority.
However, Otua does not take the place of a consulting
engineer. “Our role is purely informational,” states
Gérard Delassus, Otua’s construction expert. “We are
not empowered to take decisions for the people who
seek our advice. We are here to assist them with their
choice, to provide them with points for consideration,
to advise them of the procedures to adopt.”
The technical support provided by Otua in the field of construction can
be very varied in nature: design of the steel frame of a car park or a
dwelling (sketch above), calculation of a section, dimensioning of a
beam, advice regarding various coatings or grades of steel, the type of
deck to use… Including referral of enquirers to other specialists, such as
CTICM (French Steel Construction Industry Technical Centre).
A vast field of endeavour
Otua advises on the design of frameworks, building
envelopes (facades and roofing) and on structural
steel in the broadest sense, for newbuilds or
rehabilitation, and for all types of buildings : car
parks (essentially in respect of fire protection),
houses, agricultural buildings, offices, etc.
The questions, submitted by telephone or online,
come from every quarter: architects, consulting
engineers, technical inspection bodies, legal
experts, stockholders, students...
Heading the list of recurring subjects: the mechanical
properties of hot-rolled sections and tubes, weathering
steel, superseded sections (IAO, IPS, IPA), the standards
in force for guardrails, company contact details (steel
construction, structural steelworkers...).
Gérard Delassus
TÉL.: + 33 1 41 25 59 52
[email protected]
2,5 km : world length record for a multi-span
cable-stayed bridge.
THE STEEL IN THE VIADUCT
Deck:
COUPE “ CHÉNEAU ”
A record-breaking bridge
The choice of steel for the deck contributed to
considerable weight reduction and slimming
of the entire structure. In particular, it made it
possible to halve the number of stays required,
resulting in 11 stays rather than 22 on each
side of each pylon..
Stays : 1,500 tonnes of sheathed steel.
Technical assistance to steel users is among Otua’s major activities, in particular in the field of construction.
Providing assistance in its selection and processing is a means of promoting the material. Each year, Otua
provides focused, practical answers to more than 250 questions from professionals.
Reinforcement :
the passive and prestressed reinforcement of the piers,
footing blocks and abutments comprises 13,650 tonnes of steel.
Construction
APTA : THE FOUNDATIONS HAVE BEEN LAID
Founded in Madrid in June 2004, Apta, the Spanish steel promotion body, is now well on course,
thanks in part to the launch day that it organised on 30 November 2004, on the theme “Building
the future with steel”.
Barely hatched, the Asociación para
la Promoción Técnica del Acero
(APTA) hit the ground running.
The association brought together
350 people to meet three ardent
champions of steel in construction :
Gonzalo Urquijo – Deputy Senior
Executive Vice-President of Arcelor
and President of UNESID (Spanish
Association of Steel Companies),
Rafael Pacheco - director general of the Ministry of
Housing, and the Spanish architect Santiago Calatrava.
One of the day’s successes was hearing the testimony
of decision-makers (government advisers, developers…)
regarding the virtues of steel in construction :
economical, ecological and qualitative…
Networking and partnerships
Among the many subjects covered: fire engineering,
new regulations, civil engineering structures, steel’s
positioning and challenges in construction in Spain,
presented by Javier Tambo, Chairman of Apta.
Sylvie Pététin, entrusted by Arcelor and Celsa
(a Spanish steelmaker) with launching APTA, introduced
the team and presented Apta’s action plan for 2005.
In particular, the establishment of
committees (on bridges and construction), that will bring together European
specialists in these fields, and the
development of a partnership with the
Madrid school of architecture, in order to familiarise
the students with steel (by means of lectures, visits,
competitions...).
Sylvie Pététin
TEL: + 34 91 567 09 12
[email protected]
Among the
examples of Spanish
steel structures
presented on
30 November was
this building (above
left) at the heart of
Zaragoza, the work
of the architect
Daniel Olano Perez.
Steel made it possible
to reduce the
footprint of the
pillars and thus gain
17 additional spaces
on the 5 levels of the
underground
car park.
Archi : D. Olano.
The choice of a steel solution
While the bridge design was determined
following ten years of studies prior to
construction, the choice of material
remained the responsibility of the
builder and concessionaire. It was the
steel solution that finally won over
the Eiffage group, who secured the
tender, as the only one capable of
fulfilling the draconian constraints
and requirements that had been laid
down for the structure :
- to guarantee a minimum service life
of 120 years ;
- to carry in total safety an estimated
average traffic volume of 11,000 vehicles
per day, and withstand winds capable of
attaining speeds of 250 kph (156 mph) ;
- to integrate harmoniously into the landscape,
punctuating the view without obstructing it ;
- and of course to be built within the allotted
construction time.
Strong but slender
Steel possessed the ideal properties to satisfy these
requirements :
- Durability and stability over time ;
- Ideal compromise between mechanical performance
and low weight, in other words an excellent
strength/volume ratio. The lightness of the deck
(36,000 tonnes, as opposed to 160,000 if it had
been built of concrete) made it possible to optimise
the dimensions of the pylons and to reduce the
number of stays required, thus enhancing the
structure’s slenderness and elegance.
Steel offered other advantages, particularly during
the construction stage :
- Greater safety and comfort for the
workforce, who constructed the vast
majority of the deck in workshops,
sheltered from the elements. 96% of
hours worked were at assembly sites
rather than at great height.
- Respect for the environment :
firstly because the construction site,
installed on what was to become the
motorway, scarcely encroached on
the adjacent fields; secondly because
the temporary piers that served to
support the structure during its
erection and for the launching of the
deck were all recovered for return to
the steelworks for recycling.
Construction
OTUA : CONSTRUCTIVE ADVICE
Traffic estimates are for an average of
11, 000 vehicles per day to use the viaduct.
High-performance steels
More than one-third of the steels
employed for the deck are high-yield
steel plates, in grade S 460 M or ML
(thermomechanically rolled plates).
Their advantage is that they afford a
significant reduction in weight due to
their excellent strength/weight ratio,
while retaining excellent weldability
(even at thicknesses of 100 mm) due to
their low carbon content. No preheating
of the welds was necessary throughout
the entire construction operation, with
the exception of possible drying operations to
eliminate condensation resulting from meteorological
conditions.
L’Otua, committed to the project
From the end of 1999, well before the result of the
invitation to tender, Otua committed itself to the
project through active promotion of the steel solution.
In partnership with CEVM (Compagnie Eiffage du
Viaduc de Millau), it then built – in steel! - the Millau
visitor centre, intended to receive visitors and
explain to them steel’s place in this project and in
bridges in general. It organised lectures and visits to
the viaduct for contracting authorities, specifiers,
construction companies, educators and students, as
well as major events such as the Steelbridge symposium,
which brought 350 people to Millau in June 2004
(see InfOtua No. 5). Finally, it published the steel
bridges review Ponts métalliques No. 23, which will
stand as a tribute to this legendary project.
height of 245 metres for the tallest pier (P2), which,
surmounted by its pylon, reaches a total height of
343 metres : world height record for a road bridge.
a span of 171 m to be crossed when the deck
was launched : another world record.
Jean-Michel Vigo
TÉL.: + 33 1 41 25 64 89
[email protected]
See steel bridges review Ponts métalliques n°23.
See also the Moniteur special feature (Issue
5272, dated 10 December 2004), with an
accompanying DVD published by Setra
(Highways technical studies unit).
See the websites www.dillinger.de, www.eiffel.fr,
www.viaducdemillaueiffage.com.
Pylons :
Clermont Ferrand
Béziers
Temporary piers : 6,800 tonnes of steel.
“I need a certain type of steel deck for my floor,
where can I obtain it?” “I have to combine steel and
stainless steel in a water pipe : what is the best way
of doing this to ensure optimal corrosion protection?”
“I have to rehabilitate a building dating from 1900 ;
I don’t know what steels were used at the time or the
procedure to adopt: can you advise me?”
According to the nature of the enquiry, Otua replies
by return, refers the enquirer to a specialist, or works
for several hours to formulate a bespoke response,
particularly if it necessitates producing a drawing
representing a section through a facade, pre-dimensioning of a frame or examination of the technical
specifications drawn up by the contracting authority.
However, Otua does not take the place of a consulting
engineer. “Our role is purely informational,” states
Gérard Delassus, Otua’s construction expert. “We are
not empowered to take decisions for the people who
seek our advice. We are here to assist them with their
choice, to provide them with points for consideration,
to advise them of the procedures to adopt.”
The technical support provided by Otua in the field of construction can
be very varied in nature: design of the steel frame of a car park or a
dwelling (sketch above), calculation of a section, dimensioning of a
beam, advice regarding various coatings or grades of steel, the type of
deck to use… Including referral of enquirers to other specialists, such as
CTICM (French Steel Construction Industry Technical Centre).
A vast field of endeavour
Otua advises on the design of frameworks, building
envelopes (facades and roofing) and on structural
steel in the broadest sense, for newbuilds or
rehabilitation, and for all types of buildings : car
parks (essentially in respect of fire protection),
houses, agricultural buildings, offices, etc.
The questions, submitted by telephone or online,
come from every quarter: architects, consulting
engineers, technical inspection bodies, legal
experts, stockholders, students...
Heading the list of recurring subjects: the mechanical
properties of hot-rolled sections and tubes, weathering
steel, superseded sections (IAO, IPS, IPA), the standards
in force for guardrails, company contact details (steel
construction, structural steelworkers...).
Gérard Delassus
TÉL.: + 33 1 41 25 59 52
[email protected]
2,5 km : world length record for a multi-span
cable-stayed bridge.
THE STEEL IN THE VIADUCT
Deck:
COUPE “ CHÉNEAU ”
A record-breaking bridge
The choice of steel for the deck contributed to
considerable weight reduction and slimming
of the entire structure. In particular, it made it
possible to halve the number of stays required,
resulting in 11 stays rather than 22 on each
side of each pylon..
Stays : 1,500 tonnes of sheathed steel.
Technical assistance to steel users is among Otua’s major activities, in particular in the field of construction.
Providing assistance in its selection and processing is a means of promoting the material. Each year, Otua
provides focused, practical answers to more than 250 questions from professionals.
Reinforcement :
the passive and prestressed reinforcement of the piers,
footing blocks and abutments comprises 13,650 tonnes of steel.
Construction
APTA : THE FOUNDATIONS HAVE BEEN LAID
Founded in Madrid in June 2004, Apta, the Spanish steel promotion body, is now well on course,
thanks in part to the launch day that it organised on 30 November 2004, on the theme “Building
the future with steel”.
Barely hatched, the Asociación para
la Promoción Técnica del Acero
(APTA) hit the ground running.
The association brought together
350 people to meet three ardent
champions of steel in construction :
Gonzalo Urquijo – Deputy Senior
Executive Vice-President of Arcelor
and President of UNESID (Spanish
Association of Steel Companies),
Rafael Pacheco - director general of the Ministry of
Housing, and the Spanish architect Santiago Calatrava.
One of the day’s successes was hearing the testimony
of decision-makers (government advisers, developers…)
regarding the virtues of steel in construction :
economical, ecological and qualitative…
Networking and partnerships
Among the many subjects covered: fire engineering,
new regulations, civil engineering structures, steel’s
positioning and challenges in construction in Spain,
presented by Javier Tambo, Chairman of Apta.
Sylvie Pététin, entrusted by Arcelor and Celsa
(a Spanish steelmaker) with launching APTA, introduced
the team and presented Apta’s action plan for 2005.
In particular, the establishment of
committees (on bridges and construction), that will bring together European
specialists in these fields, and the
development of a partnership with the
Madrid school of architecture, in order to familiarise
the students with steel (by means of lectures, visits,
competitions...).
Sylvie Pététin
TEL: + 34 91 567 09 12
[email protected]
Among the
examples of Spanish
steel structures
presented on
30 November was
this building (above
left) at the heart of
Zaragoza, the work
of the architect
Daniel Olano Perez.
Steel made it possible
to reduce the
footprint of the
pillars and thus gain
17 additional spaces
on the 5 levels of the
underground
car park.
Archi : D. Olano.
Diary
STEEL EDUCATION GETS COMPETITIVE
10 and 11 March :
The competition season is open : organised annually by Otua for schools
of architecture and engineering, the purpose of these competitions is
to enable students to discover, work with and appreciate steel
through the study of practical examples.
And in particular to give them hands-on experience of steel’s incomparable
ability to provide aesthetic and creative solutions to the most demanding
technical requirements. The assignments proposed – by Otua or by the
schools – are extremely varied: design of a transport shelter, a travelling
exhibition hall, a high-rise building…
This year, the Saint Etienne, Versailles, Strasbourg, Paris Val de Seine,
Paris Belleville and Clermont Ferrand schools of architecture are taking
part; and, for the engineers, the Clermont Ferrand University of Science
and Technology engineering school and the ESTP (specialist public works
and construction school ).
HQE ® conference at Reims.
APK General Assembly, followed
by a visit to the Valenton water
treatment plant.
Gérard Delassus TÉL.: + 33 1 41 25 59 52
[email protected]
OTUA’S EDUCATIONAL OFFER
Within the framework of Acier Force Neuf, Otua is continuing to organise
lectures in educational establishments. An operation that continues to
gather momentum, with almost three times as many presentations to
students in 2004-2005 as in 2002-2003.
Otua and “Acier Force Neuf” are now beginning to be known and sought
after in schools of architecture, engineering and design. The Acier Force
Neuf exhibition continues to tour, but it is now the lectures that are most
in demand. According to the school’s focus, they may cover steel in
general, design, packaging, the automobile, construction (structures,
rehabilitation, sustainable development, bridges…), or several themes at
once. These lectures are provided by Otua personnel, by Otua’s members
or by outside experts.
Exhibitions
OTUA’S ACTIVITIES
IN SCHOOLS
Lectures
Visits
Architectural
competitions
This annual conference, in which
Otua (a member of the Association
for High Environmental Quality in
Construction since June 2004)
participates, will have as its theme
“High environmental quality,
an instrument for sustainable
development”.
APK General Assembly,
20 April :
Seminar on the theme :
“What method of galvanisation,
for what types of steel and what
finishes?”, organised by the
Conservatoire National des Arts
et Métiers.
With a contribution by Suzanne
Mathieu, Otua’s surface treatment
expert.
6 to 8 December :
Footbridge 2005, in Venise
Three years after it was first held,
this year the symposium will be
organised by the partnership of
Enzo Siviero, bridge expert and
professor at the Venice University
Institute of Architecture, and Otua.
THREE APK PUBLICATIONS
This new version of the multimedia presentation of the steel cycle
examines in greater detail the downstream aspects of steel production :
annealing, cold rolling, electrolytic deposition and dip coating, organic
coatings. A chapter is also devoted to stainless steel. It can be accessed
on the Otua website, under the heading “Tout sur l’acier”.
A CD-Rom version is available for teachers.
Valérie Dusséqué TÉL.: + 33 1 41 25 83 61 - [email protected]
Marie-Christine Ritter TÉL.: + 33 1 41 25 67 47 - [email protected]
February 2005 thematic case study
STEEL SURFACE TREATMENTS
From mechanical operations to paint coatings, there are numerous treatments
to protect steel, to enhance its appearance or to impart specific properties.
A review of the surface treatments employed in construction, their
execution and the regulations to which they are subject.
Case study available on www.otua.org, Publications section,
in English and French.
Education - Training
Diary
Just out
see the www.otua.org website,
Expertises - Ponts et ouvrages d’art
section and the www.iuav.it/footbridge
2005 website.
INFOTUA IS THE OTUA NEWSLETTER
PUBLISHERS :
SYLVIE PETETIN AND JOËLLE PONTET
EDITORIAL DIRECTOR : ANNE LE CORNEC
TRANSLATION : TOM BISHOP
GRAPHIC DESIGN AND LAYOUT : MR CHARLY
PRINTER : ATELIERS DONNADIEU
THE ENTIRE OTUA TEAM CONTRIBUTED TO
THE PRODUCTION OF THIS ISSUE.
OTUA
( OFFICE TECHNIQUE POUR L’UTILISATION DE L’ACIER )
IMMEUBLE PACIFIC- 11 COURS VALMY
92070 LA DÉFENSE CEDEX (FRANCE)
http://www.otua.org
Thematic case study
steel
N°
Viewpoint
2004 was a hectic year, which ended on a high
note with the official opening of the Millau
viaduct, which constituted and will continue to
constitute a superb communication vehicle for
steel and for Otua.
2005, which promises to be just as busy, will
be the year of Europe: with the European IPO
network coming up to speed, the launch of a
European architectural review that will take
the place of Acier Pour Construire, and more
intensive briefing concerning the Eurocodes.
Apart from our European undertakings, our
priorities are :
to continue to provide construction professionals with demonstrations of steel’s performance. In the programme for 2005, 9 technical
seminars and site visits to win over those who
do not yet make sufficient use of steel and to
provide on site practical solutions to questions
relating to fire engineering, rehabilitation, the
Eurocodes…
to pursue our activities in schools of engineering, architecture and design, in order to
afford steel the place that it deserves in the
minds of the young. Here too, we will promote
familiarisation with our material by means of
practical case studies.
Just out
in
Newsletter
16 March :
Between 2002 and 2005, Otua increased
Valérie Dusséqué TÉL.: + 33 1 41 25 83 61 its partnerships with schools of engineering,
architecture and design, and in particular
[email protected]
boosted the number of lectures.
“L’ACIER DANS TOUS SES ÉTATS”, 2nd EDITION
Experts
see the www.assohqe.org.
Three APK publications: two CD-ROMs (Nos. 36 and 38), with, among other
things, numerous photos of the Millau viaduct construction operation,
and a presentation on the building of the Agbar Tower in Barcelona,
designed by Jean Nouvel. And a DVD (No. 37) on steel construction
fabrication techniques, produced by a student at the Versailles school of
architecture, Manuel Ragons (who was awarded the 2004 “Prix des cahiers
de l’APK” for this project).
Technical
Advisory Bureau
for Steel Users
to increase our support for users, principally
through our website. The aim is that it should
offer them easy navigation to all the tools and
information that they require for steel selection
and processing.
New services will be made available to them :
a presentation of structural sections with
their dimensional characteristics and static
properties, a surface treatments glossary,
an enhanced “equivalent grades” service.
Our ambition for 2005 : to disseminate more
widely, through InfOtua, our members’
accomplishments, products and landmark
projects in order fully to perform our role as
the leading champion of steel in construction,
bridges and civil engineering structures, engineering and industry.
We count on you in this joint endeavour to
highlight our material’s most outstanding
references. And don’t forget to provide us
with your ideas and feedback, as it is this that
will enable us to improve our performance,
although we are very pleased that the vast
majority of your replies to the questionnaire
in InfOtua 7 express your total satisfaction.
Joëlle Pontet,
MANAGING DIRECTOR OF OTUA
8
solutions
February 2005
Bridges and civil engineering
structures
MILLAU VIADUCT :
A TRIUMPH OF
STEEL
In the glare of the media,
the Millau viaduct was
officially opened on 14
December 2004, starting a
new page in the histories
of the region and of
bridges. Another look at
steel’s place in this
exceptional structure and
the role played by Otua,
from its design to its
construction.
An architectural and technical feat, a media event, a major influence
on traffic trends and the region’s economy, the viaduct is also a
magnificent testimonial for steel. A prime vehicle for highlighting,
particularly in the minds of the young, the bold, high-tech, innovative
aspects of steel construction, for demonstrating that it facilitates
soul-stirring technological and human adventures.
In terms of dimensions, quantities, build time, performance… figures
abound, superlatives proliferate. And when it comes to records, steel
cannot be equalled.
In all, 62,550 tonnes of steel were used in the
construction of the viaduct.
100% of the steel in the deck, the pylons
(excluding cables and rebars) and the temporary
piers was supplied by members of Otua :
principally Dillinger Hütte GTS, and Arcelor.
E d u c a t i o n - Tr a i n i n g

Viewpoint - Office Technique pour l`Utilisation de l`Acier

Transcription

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