B UILDING & M ANAGEMENT
V OLUME 3 I SSUE 2 M AY - A UGUST 2019
T HE CIT Y F I ED M ETHODOLOGY FOR CITY RENOVATION AT DISTRICT LEVEL
E. V ALLEJO , C. C RIADO , E. A RRIZABALAGA , G. M ASSA AND A. V ASALLO (2019). B UILDING & M ANAGEMENT , 3(2): 23-33
Project Key Performance Indicators (Level 2),
before the retrofitting in order to allow an accurate study and
select the most effective energy conservation measures to be
implemented. Energy simulation tools are used to compare
different design alternatives and scenarios in order to
facilitate the selection of the most efficient one. However,
these tools generated exhaustive technical data about energy
demand and energy consumption, CO2 emissions but non-
technical data have been considered separately. Furthermore,
energy performance simulation results are valuable data but
in any case they should be validated with the assessment of
real performance.
Impact Assessment indicators (Level 3).
Level 1 indicators help to analyse the city at the early stage,
to evaluate different measures and scenarios according to the
city needs, and finally to measure the impact at city level to
assess the sustainable renovation with respect to the initial
targets.
Furthermore, Level 2 embody a key-role in the definition and
deployment of the SEP in which protocols and methods are
defined in order to evaluate the success of the implemented
actions. Gathering information about Energy, ICT tools,
Quality control of interventions, Economic evaluation, Social
acceptance and Life Cycle Analysis (LCA) will allow the
comparison between the status of the project before and after
the intervention.
3.2.4 G EOGRAPHIC I NFORMATION S YSTEMS (GIS) TOOLS FOR DISTRICT
RENOVATION
Geographic information system are tools that have for the
capability to capture, store, manage, retrieve, analyse, and
display spatial information and this functionality represents a
relevant potential for planning and managing district
renovation.
Finally Level 3 indicators were defined for impact assessment
of retrofitting actions, in order to evaluate the impact of the
measures and projects deployed in the districts.
The utilization of GIS tools allows collecting quantitative and
qualitative data that can be geo-referenced and visualized
through web-mapping. Furthermore, crossing the storage
information could provide additional data that can support
the decision-making phase in district renovation.
3.2.2 B UILDING I NFORMATION M ODELLING (BIM) FOR DISTRICT
RENOVATION
Building Information Modelling consists in a collaborative work
methodology for the creation and management of a project
and allows sharing information in a database within a
platform. The innovative aspects of using BIM is that all the
involved stakeholders can access to digital information, not
only the 3D model (graphical information) but also non
graphical information stored in the model and modify it in real
time. The use of BIM finds a wide range of application through
a facility’s life cycle from its programming and conceptual
design, passing for construction and operation phases to its
demolition or renovation.
3.2.5 L IFE C YCLE C OST A NALYSIS (LCCA) TOOLS FOR DISTRICT
RENOVATION
Another tool, which in the last years has become more
relevant, is the Life Cycle Cost Analysis, this type of methods
allow making a cost effectiveness estimation of the
alternatives and scenarios that can be implemented in a
district retrofitting project. The LCCA focuses on a long-term
study that takes into account all the investment costs from the
first steps of the project as planning and design, the operation
and maintenance costs to the last phase of the project as
demolition and renovation.
In CITyFiED project, the use of BIM is proposed through all the
phases of the project: in particular, BIM Models were created
and a key-aspect for its utilization was the definition of the
BEP (BIM Execution Plan) in order to manage processes,
workflows and people involved on BIM. Using BEP as guide
during the process assures that all the partners involved are
aware of opportunities and responsibilities associated to the
BIM implementation.
In CITyFiED, a LCCA had been realized and it gave support to
the ECG and technicians during the definition of the most
suitable alternatives and scenarios.
3.2.6 CIT Y F I ED R EPLICATION M ODEL
The Replication model is one of the main results of CITyFiED
project and consists in a time-saving tool developed in order
to evaluate and maximise the replication potential of CITyFiED
technologies and strategies already implemented in the three
demonstration cases.
3.2.3 E NERGY S IMULATION S OFTWARE TOOLS FOR DISTRICT RENOVATION
Energy simulation software are relevant tools when it comes to
energy renovation projects at district level, since the diagnosis
of the energy performance of a building is the starting point
to proceed with the implementation of energy efficient
measures that produce energy and cost savings.
The Replication Model has the goal to support stakeholders
interested in implementing energy saving measures and
strategies in their cities. Furthermore, the replication model
offers a framework for a virtual feasibility study for assessing
In CITyFiED methodology, energy simulation tools are
proposed to estimate the energy performance of the buildings
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