IN 2020
T A B L E O F I N D I C A T O R S
TARGET FOR BUILDING PROJECTS BUILT
WITH BIO-BASED/GEO-BASED MATERIALS,
INCLUDING 50% FRENCH WOOD
70%
Measuring concrete sobriety A new booklet introduced into public
procurement contracts allows Société
du Grand Paris to analyse in detail, by type
of concrete, the amount of concrete used
and the amount of greenhouse gases they
emit. This analysis can also be used to
optimise the quantities used.
Société du Grand Paris is
committed to bio-based
materials and processes By signing the wood and bio-based
materials pact supported by the
Fibois interprofessional organisation on
5 November 2020, Société du Grand Paris
committed to building 40% of the total
floor space of its urban and real estate
projects in wood and bio-based materials.
Its commitment goes further with the
objective that 70% of its projects be built
with bio-based/geo-based materials.
As the building sector is the second largest
emitter of greenhouse gases in France,
the use of wood and bio-based materials
will have a significant impact on its carbon
footprint.
This eco-design approach will also contribute
to the structuring and development of
the French wood industry by consolidating
demand from programme managers,
which will lead to increased investment
(hemp concrete, straw, etc.).
An environmental performance
clause for concrete For its contracts still to be awarded,
Société du Grand Paris has introduced a
new environmental requirement on the use
of concrete. In its specifications, it requires
contractors, for all civil engineering public
contracts, to use concrete that produces
at least 40% fewer emissions than concrete
composed of 100% CEM I. This is estimated
to reduce the total CO2 emissions of the
Grand Paris Express by 20%, i.e. a reduction
of 400,000 tonnes of CO2.
This new clause was included in the six public
tenders launched after October 2020:
package 3 for Line 16, two packages for
Line 15 East, package 2 for Line 15 West,
package 3 for Line 17 and package 3 for
Line 18.
Two examples:
Contractors tender documents
for package 1 of Line 15 East include
requirements for using wood and
bio-based materials in the development
of real estate projects, whose surface
density varies from 30 to 40 kg/m²
depending on the site. These thresholds
are also in line with the quantified
commitments made by Société du
Grand Paris under the Fibois pact.
The Arcueil-Cachan urban
redevelopment project, developed
in partnership with the town of Cachan,
also has bold ambitions in terms of the
use of bio-based materials, aiming to
achieve level 2 of the Bio-Based Building
label.
The requirements for using wood and
bio-based materials have been included
in the tender documents for the design-build
Lines (15 West and 15 East) and will also be
included in the tender documents for real
estate projects across the rest of the network.
F O C U S 7
RISKS AND CHALLENGES
2020 ACTIVITY
IDENTITY
CSR APPROACH
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