Télécharger - Egis group

Egis and towers: one million square meters
1 million square meters
180000 > The guardians of the Urals, Ekaterinbourg, Russia
Valode & Pistre
110000 > Tiara Towers, Dubai, United Arab Emirates
ADPI
92450 > Triangle, Paris, France
Herzog & De Meuron
90000 > Generali, Paris, France
Valode & Pistre
90000 > Pont de Sèvres Towers, Boulogne Billancourt, France
Dominique Perrault
87000 > First, Paris, France
KPF - SRA Architectes
86000 > T1, Paris, France
Valode & Pistre
79000 > Air²
Arquitectonica
69500 > Majunga
Jean-Paul Viguier
54000 > D², Paris, France
Anthony Béchu - Tom Sheehan
45000 > Sequana (Mozart Tower), Issy-les-Moulineaux, France
Arquitectonica
37000 > AXA – Opus 12, Paris, France
Valode & Pistre
35000 > Iset, Ekaterinbourg, Russia
Valode & Pistre
29460 > BIDV, Danang, Vietnam
AREP
27000 > Oxygène, Lyon, France
ARTE Charpentier
Meeting the challenge
of complexity
Air2 - Paris, France
Arquitectonica
The aspiration of a tower project is to reconcile the sublime with reality. The sublime
because a tower is an architectural work of art, a symbol of modernity and a landmark
in the urban landscape. Reality because a high-rise is a dense, complex building, a
vertical city that demands an extremely rational design to optimize each and every
square meter.
The architectural and engineering components of a tower project (the cores, the
vertical traffic ways, the facades, the distribution of utilities/energy supplies, etc.) are
so closely intertwined that the architect’s design and the engineer’s calculations
cannot be dissociated.
As demonstrated by the Tour First, winner of the French Grand Prix for engineering
design, the Egis teams of engineers work on these demanding building programs,
analyzing and ranking their various components to closely coordinate their
interrelationships.
Flows and density
Core optimization
The density of human flows and the multiplicity of functions, i.e.,
the challenges underlying the success of a tower operation,
are accompanied by design constraints that extend beyond the
building itself. Whether from the standpoint of human, energy
or logistic flows, how the tower is inserted into the city is
of prime importance. The Egis Group possesses the entire
spectrum of capabilities needed to account for all these
considerations: mobility, transport, energy, water, etc.
The essential structural element for tower solidity,
the core is the nerve center of the building and
the location of multiple functions: vertical link for
the occupants, for utilities, for evacuating persons,
operation and maintenance zone, etc.
Since the core takes up considerable space on each
level, its optimization represents a major challenge
in tower design.
Anthony BECHU - Tom SHEEHAN
Arquitectonica
Arquitectonica / Paul Maurer
Sequana - Issy-les-Moulineaux, France
Valode & Pistre
The exemplary reconstruction of
this tower, built in the 70s, has:
> increased its leasable floor
area by raising the tower 60m
and by creating 10 new levels,
> cut its energy consumption
figure, not by half but by
three-quarters,
> improved the sense of
wellbeing of its occupants by
creating openings in blind gable
walls, reorganizing the core
and increasing the floor area
on each level,
> improved access to the
tower and its insertion into the
very dense urban fabric at
Paris-La Défense.
Valode & Pistre
KPF - SRA Architectes © Florence Levillain
< Tour First
Winner of the 2009 French
prize for engineering design
and the 2011 MIPIM Awards*.
(* the world's property market event)
First - Paris, France
Iset - Ekaterinbourg,
Russia
Generali - Paris, France
D2 - Paris, France
Facade design
Performance of the structure
Safety
In our time, facades have become far more than simply the
architectural skin of the edifice. If facades give the tower a personality
of its own via the choice of materials, textures and colors, they also
determine the quality of indoor lighting, thermal comfort and the
building’s energy performance.
The search for excellence is the motor that drives the Egis engineers
specialized in designing the increasingly complex envelopes for highrise structures.
The great height of towers multiplies many times
over calculations that are customarily secondary,
even negligible when designing a building of
conventional height. Wind can have an impact as
considerable as an earthquake; the compression of
the concrete becomes critical, and the oscillations
at the top of the structure must be diminished to avoid
discomfort for occupants.
Because the time needed to evacuate the concentration of persons
from a tower building in the event of an incident is significant,
safety considerations are a priority component of the design
process. Risk assessment and the regulations that are drafted in
consequence vary from one country to another. For each tower
project, Egis first investigates the specific context in the country of
its location and determines the framework in terms of safety for the
future building.
Herzog & De Meuron
ARTE Charpentier © Gilles Aymard
L’Autre Image / Jean-Paul Viguier et Associés,
Valode & Pistre
Valode & Pistre
Triangle - Paris, France
T1 - Paris, France
Majunga - Paris, France
The guardians of the Urals - Ekaterinbourg, Russia
Environmental challenges
Worksite organization
Green building must be realistic and
economically viable. The tower’s great height
offers advantages in this regard that are still
not often acted upon: wind (wind turbine
energy); light (solar power and the comfort
of occupants); slenderness and spatial
volumes (natural ventilation); density (pooling
and optimization of energy sources), etc.
The management of a tower construction site requires
preparing a very detailed schedule for building on
several levels simultaneously while avoiding any
dangerous superimposition of works. The flows of
workers and materials must also be minutely organized
and controlled while adapting the worksite to the space
available at the base of the building, which is often
very limited.
Oxygène - Lyon, France
Egis – a 75%/25% owned subsidiary of the French “Caisse des Dépôts” and “Iosis
Partenaires” (“partner” executive and employee shareholding) – is a consulting and
engineering group working in the fields of transport, urban development, construction,
industry, water, environment and energy. In the road and airport fields, the group is also
involved in project financing, turnkey-contract projects and facility operation.
With 12,000 employees, of whom 7,500 in engineering, and a turnover of €900 million
in 2012, the group is present in over 100 countries and has around 50 offices in France.
Egis locations worldwide
11, avenue du Centre
CS 30530 Saint-Quentin-en-Yvelines
78286 Guyancourt Cedex - France
T +33 (0)1 30 48 44 00 / F + 33 (0)1 30 48 44 44
communication.egis@egis.fr
www.egis-group.com
2013 JANUARY • EGIS SA RCS Versailles 702027376 – 11 av. du Centre 78286 Guyancourt Cedex • Photos © DR, cover Generali, Paris, France • Design: www.artkas.fr
Egis