intervention strategies for renovation of social housing estates

Directed to PHYSICAL ASPECTS (functional - technical)
NEW DWELLINGS DEMOLITION ACCESSIBILITY
11
Addition of new ‘top-end’
(housing attached to the existing block)
Improvement of housing differentiation;
It could affect the quality of existing top-end dwellings;
Contribution to better energy savings
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;
Need of space for new construction;
Need for expansion joints between new and existing
structure
*/**
Depending on type and architectonic characteristics,
transforms silhouette and massiveness;
Depending on the design;
Better appearance if using materials that remind good
quality housing (no cheap materials like masonry or
plastic)
Lack of integration with the rest of the block;
The solution affects a limited portion of the block;
Short lasting materials shorten 'wow effect' of
renovation
Provision of housing for wider groups;
Extension of free choice;
Sense of identification with own block could be
improved (especially in the case of a tower);
New appearance could improve orientation within the
neighborhood;
Increasing attractiveness for other groups;
Increasing attractiveness for other groups;
Increasing residential density and people might dislike
the distortion of open space behind their home
(extended view)
12
Opening new passageways
13
Enlargement of existing archways
14
Chirurgic demolition
Connection of areas separated by the block; Improvement of existing connection with surroundings; Circumstanced interventions could improve the quality
of the building;
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);
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 openings);
Technical restrictions if used the tunnel technology
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);
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 openings);
Technical restrictions if used the tunnel technology
(enlargements into internal or external walls do not have (enlargements into internal or external walls do not have
to interfere with horizontal/vertical tie-rods;
to interfere with horizontal/vertical tie-rods;
vertical/horizontal reinforcements need to be
vertical/horizontal reinforcements need to be
reintroduced; attention to technical equipments reintroduced; attention to technical equipments
incorporated into walls and floors).
incorporated into walls and floors);
**
Depending on size and shape, breaks massiveness
Size and shape of openings might alter building
proportions
Improvement of livability (use) in the surroundings;
Increase feelings of safety and access (disabled)
Prevention of abandonnemet- improper use of open
spaces - could be difficult;
New construction combined with renovation of dwellings Selective demolition is a scientific procedure where
at the top-end leads to the differentiation of the housing special expertise is required. In the case of Italy, the
supply and the improvement of the market position of lack of experience could be a limitation (this is
existing top-end dwellings;
particularly true in the case of neighborhoods like
Could lead to improvement of quality of top-end Laurentino 38 where it has been used the tunnel
dwellings by moving the walls;
technology)
Could lead to a decrease of shared spaces resulting in
less expenses for maintenance;
Tenants can stay their dwellings during the works;
Relevant transformation of appearance could be used
as a window sponsoring the restructuring of the area;
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;
If renovation regards also the surroundings, effective
management of the building site is required;
Attract different target groups could be difficult even
when the appearance substantially change;
Implies substantial investments on the long run;
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;
Need for an ad-hoc regulation to manage the
transformation;
In the case of tunnel technology, adaptation of existing
openings in the external wall can be expensive and
technically difficult (this is the case of the blocks in
Laurentino 38);
Tenants should move another place;
Effective management of the building site is required;
Need of technical expertise;
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 entire demolition;
No direct financial returns;
*
Depending on size and shape, breaks massiveness
Size and shape of openings might alter building
proportions
Improvement of livability (use) in the surroundings;
Contribute preventing abandonment - improper use of
existing archway
Prevention of abandonment- improper use of open
spaces - could be difficult;
No special expertise is required;
Tenants can stay their dwellings during the works;
Need for an ad-hoc regulation to manage the
transformation;
In the case of tunnel technology, enlargement of
existing archways can be expensive and technically
difficult (this is the case of the blocks in Laurentino 38);
No effects on market position of dwellings;
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 entire demolition;
No direct financial returns;
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 openings);
Should not be demolished: corner elements, bearing
and bracing walls, connections floor-wall and tie-rods;
*
Transformation of massiveness and silhouette;
Size and shape of openings might alter building
proportions
Could lead to a decrease of shared spaces resulting in
less expenses for maintenance;
No special expertise is required;
Tenants can stay their dwellings during the works;
In the case of tunnel technology, even chirurgic
demolition could be expensive and technically difficult
(this is the case of the blocks in Laurentino 38);
No relevant effects on market position of dwellings;
No direct financial returns;
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.
15
Add new galleries
Improvement of accessibility to the dwellings;
Contribute to differentiation of accessibility according to
dwelling types
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;
Building layout and dwelling types;
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 openings);
Technical restrictions if used the tunnel technology
(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 repetitiveness. 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 accessibility, especially for elderly,
disabled and families with children
Possible social conflicts in collective stairwells;
Effectiveness of the renovation design could be
subjected to preferences of people;
Need for an ad-hoc regulation to manage the
transformation;
Relevant transformation of the appearance could be
subjected to the approach undertaken by the housing
association;
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