Õismäe tee 70 Kindergarden, Tallinn
How can we integrate Re-X scan findings into the procurement tender?
Õismäe tee 70 is a former kindergarten in Tallinn scheduled for demolition and replacement with a new building.
Before demolition, the City of Tallinn commissioned a Re-X Scan to evaluate whether key structural elements could be recovered and reused. The findings are now used to inform procurement requirements and recovery planning.
Location:
Õismäe tee 70, Tallinn
Building type:
Kindergarten
Year Build:
1998
Structure:
Precast reinforced concrete fram
The Re-X Scan findings were incorporated into the demolition tender, requiring selected structural elements to be recovered rather than demolished. Approximately 50 elements, representing around 400 tonnes of concrete, were included in the recovery scope to support future reuse.
Method and findings
The building was assessed through visual inspections, structural measurements, reinforcement scanning, concrete strength testing, carbonation testing, and ground-penetrating radar investigations. The assessment focused on precast reinforced concrete elements, including hollow-core slabs, ribbed panels, beams, and columns.
The investigation confirmed that the building's structural frame is based on a regular precast reinforced concrete system with significant reuse potential. Hollow-core slabs, ribbed floor panels, beams, columns, and stair elements were identified as suitable candidates for recovery and further reuse assessment.
Structural system
The investigation identified the building as a precast reinforced concrete frame based on the ИИ-04 structural system widely used during the 1970s and 1980s. The regular 6 × 6 metre grid and standardized elements made it possible to link the existing structure to known design capacities and construction details.
What happens next
The findings have already been incorporated into the demolition tender, requiring selected structural elements to be recovered for future use.
During implementation, the contractor will work together with the City of Tallinn and Re-X team to plan recovery methods, select appropriate equipment, and ensure that reusable elements are preserved in suitable condition for their next application.
Element verification
The internal reinforcement of slabs, beams, and columns was verified through scanning and selective opening of structural elements. This confirmed that the investigated elements corresponded to standard precast concrete components and provided the technical basis for evaluating future reuse.
Tender implementation
The findings moved beyond assessment and into implementation. Recovery requirements were incorporated into the demolition tender, requiring approximately 50 structural elements—representing around 400 tonnes of concrete—to be selectively dismantled and preserved for future reuse.