Practices

Shelter pilot project - Bulgarian Housing Association Pilot implementation

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Analysis of the implementation of a project management model for the renovation of multi-storey condominium housing.


Pilot buildings:

  • pilot 1:  Year of construction – 1950, Condominium apartment building consisting of four floors, each with three apartments and an attic area, partially used for living purposes – 16 dwellings
    Construction characteristics:  Steel-concrete bearing structure of columns and floor plates, brick walls, pitched roof of wooden structure covered with ceramic tiles

 

  • pilot 2:  Year of construction – 1932, Condominium apartment building consisting of four living floors, each with three apartments, ground floor with one apartment and an attic area – 13 dwellings                                  Construction characteristics:  Steel-concrete bearing structure of columns and floor plates, brick walls, pitched roof of wooden structure covered with ceramic tiles
     

 

  • pilot 3:  Year of construction – 1954, Condominium apartment building consisting of two living floors, each with six apartments, ground floor with five apartments and an attic area with two apartments – 19 dwellings    Construction characteristics:  Steel-concrete bearing structure of columns and floor plates, brick walls, pitched roof of wooden structure covered with ceramic tiles


Description of general works
Complete refurbishment of the building envelope and the common areas (staircases, building installations, heat exchanger, etc.).


Description of energy works
SHELTER renovation project includes the execution of energy efficient renovation measures such as insulation of the building envelope, improvement of the common parts and installation of RES (solar collectors). Building inspections and energy audits are executed prior to the energy efficient renovation works. The preliminary energy audits estimate that solar collectors will produce 50% of the needed hot water. The real data, however, will be available at a later stage when monitoring data will be collected and processed.
 

Acronym of the case

BHA Pilot implementation

Lessons learnt

- The implementation of SHELTER alternative let to an increased energy efficient performance of the renovated buildings versus the previous pilot projects. The expected savings according to the preliminary energy audits accounts for approximately 10% more compared to previous projects. This is mainly due to the extended energy efficiency program including the application of RES (solar collectors for domestic hot water) on the roof of the renovated buildings. A higher cost effectiveness of the renovation is achieved in terms of better energy savings for the same cost for renovation which means better value for the investment. This is mainly due to the improved bidding procedure for the different type of construction works. A better quality of the construction works is performed mainly due to the improved coordination between the different contractors. A shorter construction period is achieved through the improved model for collaboration between the different stakeholders involved in the process.

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