intervention strategies for renovation of social housing estates

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Physical measures for renovation of social housing estates Chapter 8 ------------------------------------------------------------------------------------------------- ‘Envelope directed renovation’: Highest improvement of initial building quality by preserving the casco structure and attaching a new envelope (no preservation of internal and external walls). This approach leads to the highest flexibility of renovation by preserving only the casco structure. By replacing the building shell, it leads to a profound transformation of the appearance of the block comparing to the initial conditions. For implementation of envelope directed renovation tenants have to move out during the works. The following scheme shows three levels of physical transformation and the respective approach to renovation. Physical transformations are roughly distinguished according to the relevance of the change to be achieved in a block (standard, profound and radical transformation) while the approaches to renovation (renovation-light, high-level and envelope directed) are reported according the description provided above. TRANSFORMATION LEVEL PHYSICAL TRANSFORMATION RADICAL RENOVATION APPROACH ENVELOPE DIRECTED Highest improvement of initial building quality by preserving the casco structure and attaching a new envelope (no preservation of internal and external walls). This approach leads to the highest flexibility of renovation by preserving only the casco structure. By replacing the building shell, it leads to a profound transformation of the appearance of the block comparing to the initial conditions. For implementation of envelope directed renovation tenants have to move out during the works. (RE)MOVE EXTERNAL WALLS WITH NEW ONES MOVE INNER WALLS MOVE RESIDENTS PROFOUND HIGH-LIVEL RENOVATION STANDARD Higher and more profound improvement than renovationlight by moving internal walls (change position and physical characteristics like materials) and adding new volumes to the building (like optoppen). This approach can profoundly improve, for example, housing differentiation by combining existing housing units and/or attaching new blocks or building elements to the existing block (new top-end or double glazed faces). It is usually implemented by preserving major architecture characteristics (like shape, materials, detailing). For implementation of high-level renovation, tenants need to move out during the works. ADAPTAT EXISITING EXTERNAL WALLS MOVE INNER WALLS MOVE RESIDENTS RENOVATION LIGHT Improvement of initial quality of the building by preserving all existing walls (position and physical characteristics like materials). It is implemented to upkeep the building to the living standards. For implementation of renovation light tenants do not need to move out during the works. NO MOVE EXISITING EXTERNAL MOVE INTERNAL WALLS NO MOVE OF RESIDENT EXAMPLE All the measures extrapolated from the Dutch examples can be gathered according to the renovation approaches presented above. The following table shows all the measures and their possible match to one of the approaches: renovation-light, high-level renovation and envelope directed. 6. H PHYSICAL TRANSFORMATION RENOVATION APPROACH MEASURES PER APPROACH
Physical measures for renovation of social housing estates Chapter 8 ------------------------------------------------------------------------------------------------- Clearly, being only based on the projects described in this study, the table does not pretend to provide an exhaustive overview. As mentioned above, the list is supposed to be integrated by any other solution that might derive form future experimentations. The entire matrix is provided at the end of this Chapter. RENOVATION APPROACH ENVELOPE DIRECTED HIGH-LIVEL RENOVATION PHYSICAL \ASPECTS APPEARANCE ENERGY EFFIC. SOCIAL ASPECTS PHYSICAL ASPECTS GROUPS OF PHYSICAL MEASURES 1) Vertical - horizontal combination of existing units on upper floors (no bottom) 2) Combination of units on upper floors by enlarging existing archways in the bearing structure (gates) 3) ‘Maisonette with street front door’ at the bottom by matching existing units at the ground and first floor 4) Extent outer livable space by attaching new loggias to the façade 5) Extent livable space by attaching new volumes to the façade covered by glazed surface (glazed volumes) 6) Extent livable space by attaching new volumes to the façade (opaque volumes) 7) Addition of new housing units on the top floor (‘optoppen’) 8) New dwellings in low-rise attached at the bottom (placed to create a ‘courtyard’) 9) ‘Maisonette with patio’ attached at the bottom by matching existing units on ground and first floor (duplex with inner patio) 10) ‘Maisonette with private garden’ attached at the bottom by matching existing units on ground and first floor (duplex with garden) 11) Addition of new ‘top-end’ (new housing attached to the existing block) 12) Opening new passageways in existing structure (partial demolition to open gates) 13) Enlargement of existing archways 15) Add new galleries to the facade to enter the dwellings 16) Attach new external elevators to the facade 17) Add further entrances 18) New volume attached at the bottom (to house medical care - office - education - commercial and/ or social facilities) 19) New volume for technical installations on top-floor 20) Move existing rooms for storages to another volume attached or nearby the existing block 21) Entire substitution of existing envelope with a new façade 24) Extend facade with livable volumes 25) Extend facade with terraces-loggias 26) Different characteristics of the new facade (shape-texture-color) corresponds to different dwellings' types 29) Substitute existing walls of the entrances with new glazed surfaces 30) Change shape and cladding of stairwells 31) Change existing volume of stairwells with a colored and glazed one 32) Add colored lighting from inside into glazed stairwells 33) New parapets with transparent/semitransparent materials (different textures and colors) 34) Cover with new light colored materials (masonry, wood, green, stones) 35) Add movable shadings 36) Attach a double glazed facade with large air cavity containing shared spaces 39) Preserve existing casco and change the envelope 40) Add solar panels or PV on the roof and/or top-end façade 41) Water savings by updating technical installations 42) Improvement of building recognizability 43) Dwellings with own entrance 44) Dwellings on the ground floor overlooking the street 45) Combination of social housing and homeownership 46) Shift from social housing to homeownership 47) Entire and/or partial transformation of existing dwellings for other target groups (like elderly in need of care, students, atelier, high-income elderly) 48) Combination of social housing with small commercial activities and/or offices 49) Combination of housing for elderly and medical care and/or nursery 1) Vertical - horizontal combination of existing units on upper floors (no bottom) 2) Combination of units on upper floors by enlarging existing archways in the bearing structure (gates) 3) ‘Maisonette with street front door’ at the bottom by matching existing units at the ground and first floor 4) Extent outer livable space by attaching new loggias to the façade 5) Extent livable space by attaching new volumes to the façade covered by glazed surface (glazed volumes) 6) Extent livable space by attaching new volumes to the façade (opaque volumes) 7) Addition of new housing units on the top floor (‘optoppen’) 8) New dwellings in low-rise attached at the bottom (placed to create a ‘courtyard’) 9) ‘Maisonette with patio’ attached at the bottom by matching existing units on ground and first floor (duplex with inner patio) 10) ‘Maisonette with private garden’ attached at the bottom by matching existing units on ground and first floor (duplex with garden) 11) Addition of new ‘top-end’ (new housing attached to the existing block) 12) Opening new passageways in existing structure (partial demolition to open gates) 13) Enlargement of existing archways 14) Chirurgic demolition 15) Add new galleries to the facade to enter the dwellings 16) Attach new external elevators to the facade 17) Add further entrances 18) New volume attached at the bottom (to house medical care - office - education - commercial and/ or social facilities) 19) New volume for technical installations on top-floor 20) Move existing rooms for storages to another volume attached or nearby the existing block 7. H
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INTERVENTION STRATEGIES FOR RENOVAT
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TABLE OF CONTENTS ACKNOWLEDGEMENTS
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The research set up Chapter 1 -----
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Theoretical background Chapter 2 --
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Social housing renovation Italy: wh
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Approaches to renovation interventi
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A Dutch case study. The Bijlmermeer
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