intervention strategies for renovation of social housing estates

Directed to the APPEARANCE
FACADE
21
Entire/partial substitution with a new façade
Improvement of performance of existing envelope (like
thermal and sound insulation, ventilation, day light and
shadings);
Improvement of total energy consumptions.
Local regulation (in Italy size and number of rooms of
social dwellings are subjected to restrictions provided
by law, as well as increase of cubature);
Local regulation with respect to its integration with the
surroundings;
Structural capacity of the block (in many Italian
residential blocks, like Laurentino 38, tenants made
inner changes. Alterations they made, like moving of
walls and/or big openings, have to be calculated to
design the combinations);
Building technology when used the tunnel: anchorages
of extensions restricted to location of walls/floors of the
tunnel, and its horizontal tie-rods; better new structures
hanged to the tunnel to prevent overloading of existing
floors; thickness of new horizontal structures needs to
be compatible with existing floors.
***
Break of massiveness. Transform massiveness and
silhouette;
Better appearance if using materials that remind good
quality housing (no cheap materials like masonry or
plastic)
Repetition of the same solution (like shape and
material) could replicate initial problems;
Lack of integration with the surroundings;
Short lasting materials shorten 'wow effect' of
renovation
Improvement of sense of identification with own block
and dwelling;
New appearance could improve orientation in the
neighborhood;
The block could function as a landmark increasing
livability by higher attractiveness
Effectiveness of renovation could be subjected to
preferences of people;
Leads to the improvement/change of market position of
dwellings and could attract wider groups;
Relevant improvement of quality of dwellings;
Combination of units could lead to a decrease of shared
spaces resulting in less expenses for maintenance;
If no housing combination, renovation works could be
quick (a few weeks), thus move of tenants could be
managed more easily at less expenses;
Relevant transformation of appearance could be used
as a window sponsoring the restructuring of the area;
Waste of (selective) demolition could be reused for new
construction in the neighborhood (see Germany);
Could be used as a selling point
Demolition is necessary and special expertize required.
Location and competition with other neighborhoods
could be an obstacle in attracting other groups;
Tenants have to move during the works, meaning
expences for grants + temporary accommodations;
In the Netherlands, less than 50% of tenants return their
dwellings that could lead to letting problems and
vacancy;
If the commercial value of land is high and there are no
special restrictions, it might be decided for demolition;
Attract different groups could be difficult even when the
appearance changes;
Transformation of appearance could be subjected to the
approach of the housing association;
High-level renovation implies substancial investments;
New facade could lead to savings on energy costs but
is a financial return only for tenants; High-energyperformance
could imply high investments;
In Laurentino38 the concrete panels of the façade
were prefabricated in situ. When placed by using a
crane they were fixed by means of concrete casting.
Cutting the reinforcements might be technically difficult
and expensive.
22
Add new external cladding
Improvement of performance of existing envelope (like
thermal and sound insulation, ventilation, daylight and
shadings);
Improvement of total energy consumptions.
Critical deterioration of the envelope;
Local regulation with respect to its integration with the
surroundings;
**
Break of repetitiveness especially when colors and
textures are changed;
Better appearance if using materials that remind good
quality housing (no cheap materials like masonry or
plastic)
Repetition of the same solution (like shape and
material) could replicate initial problems;
Lack of integration with the surroundings;
Short lasting materials shorten 'wow effect' of
renovation
Improvement of sense of identification with own block
and dwelling;
New appearance could improve orientation in the
neighborhood;
The block could function as a landmark increasing
livability by higher attractiveness
Effectiveness of renovation could be subjected to
preferences of people;
No special expertise is required;
Improvement of housing quality - inner comfort;
Renovation works could be very quick;
Tenants can stay their dwellings during the works;
23
Substitute front door of gallery apartments with
new colored ones
When front doors facing the outside, inner comfort can
be improved
24
Extend facade with volumes
Improvement of housing differentiation;
Vertical-horizontal extension/contraction of dwellings;
Improvement of day lighting if wider glazing;
Shading the facade
Effectiveness on building level is restricted to the gallery Local regulation (in Italy size and number of rooms of
apartment blocks
social dwellings are subjected to restrictions provided
by law, as well as increase of cubature);
Local regulation with respect to its integration with the
surroundings;
Structural capacity of the block (in many Italian
residential blocks, like those in Laurentino 38, tenants
*
If gallery apartments
Restricted to the gallery apartment blocks;
Short lasting materials shorten 'wow effect' of
renovation
25
Extend facade with terraces-loggias
Horizontal extension of dwellings;
Shading the facade
made inner changes. Alterations they made, like moving residential blocks, like Laurentino 38, tenants made
of walls and/or big openings, have to be calculated to inner changes. Alterations they made, like moving of
design the extension);
walls and/or big openings, have to be calculated to
Obstruction of daylighting due to extended projections; design the combinations);
When new glazed facade, possible decreases of inner Technical restrictions if used the tunnel technology
comfort in summer due to overheating;
(anchorages of extensions restricted to location of
High of ceiling when extentions uses the bottom (in Italy
270cm is the minimum high for housing. Extentions
could be difficult when the bottom is 240cm high).
Building technology when used the tunnel: anchorages
of extensions restricted to location of walls/floors of the
tunnel, and its horizontal tie-rods; better new structures
hanged to the tunnel to prevent overloading of existing
floors; thickness of new horizontal structures needs to
be compatible with existing floors.
***
Break of massiveness. Transform massiveness and
silhouette;
Better appearance if using materials that remind good
quality housing (no cheap materials like masonry or
plastic)
Repetition of the same solution (like shape and
material) could replicate initial problems;
Short lasting materials shorten 'wow effect' of
renovation
Improvement of sense of identification with own block
and dwelling;
New appearance could improve orientation in the
neighborhood;
Increasing livability by higher attractiveness
When residential extensions using the bottom, possible
lack of safety because of the direct spatial relationship
of housing and surroundings (this could be particularly
true in very deprived Italian neighborhoods like
Laurentino 38);
People could feel uncomfortable with very extended
projections;
Effectiveness of renovation could be subjected to
preferences of people;
Leads to the improvement of quality of dwellings and
their market position;
If no move of walls, renovation works could be quick (a
few weeks), thus move of tenants could be managed
more easily causing less expenses;
Tenants can stay their dwellings during the works;
Relevant transformation of appearance could be used
as a window sponsoring the restructuring of the area;
Could be used as a selling point
Need for an ad-hoc regulation to manage the
transformation;
Location and competition with other neighborhoods
could be an obstacle in attracting other target groups;
Need of technical expertise;
Attract different target groups could be difficult even
when the appearance substantially change;
Relevant transformation of the appearance could be
subjected to the approach undertaken by the housing
association;
Transformation implies higher initial investments;
In Laurentino 38 cutting the reinforcements to detach
the panels might be technically difficult and expensive
(see 4) .
Local regulation (in Italy size and number of rooms of
social dwellings are subjected to restrictions provided
by law);
Local regulation with respect to its integration with the
surroundings;
Obstruction of day lighting due to extended projections;
Structural capacity of the block (in many Italian
walls/floors of the tunnel, and its horizontal tie-rods;
better new structures hanged to the tunnel to prevent
overloading of existing floors; thickness of new
horizontal structures needs to be compatible with
existing floors).
***
Break of massiveness. Transform massiveness and
silhouette;
Better appearance if using materials that remind good
quality housing (no cheap materials like masonry or
plastic)
S
W
Repetition of the same solution (like shape and
material) could replicate initial problems;
Short lasting materials shorten 'wow effect' of
renovation W
Improvement of sense of identification with own block
and dwelling;
New appearance could improve orientation in the
neighborhood;
The block could function as a landmark
People could feel uncomfortable with very extended
projections;
Effectiveness of renovation design could be subjected
to preferences of people;
Could improve market position of dwellings;
Leads to the improvement of the dwellings' quality;
Works could be quick;
Tenants can stay their dwellings during the works;
Relevant transformation of appearance could be used
as a window sponsoring the restructuring of the area;
Could be used as a selling point
Need for an ad-hoc regulation to manage the
transformation;
Location and competition with other neighborhoods
could be an obstacle in attracting other target groups;
Need of technical expertise;
Attract different target groups could be difficult even
when the appearance substantially change;
Relevant transformation of the appearance could be
subjected to the approach undertaken by the housing
association;
If the commercial value of the site is high and there are
no special restrictions for that location, it is possible the
housing association will decide for demolition;
In Laurentino38 the concrete panels of the façade
were prefabricated in situ. When placed by using a
crane they were fixed by means of concrete casting.
Cutting the reinforcements to detach the panels might
be technically difficult and expensive.
PHYSICAL ASPECTS (technical-functional)
APPEARANCE
SOCIAL ASPECTS
FEASIBILITY
S
S
W
S
W