Roof extension in timber frame construction
The three-storey house with a basement at Barnetstraße 60-67 in 12305 Berlin is being extended by two more storeys. This will create 32 new residential units.
For this, the timber frame construction method was used, which is particularly suitable for this due to the recurring floor plans. A special challenge here is the weather protection for the floors below. The fire walls and staircases were made of solid reinforced concrete for structural reasons and to meet fire protection requirements. Here, too, semi-prefabricated parts were used. This made it possible to reduce the production time due to prefabrication and shorter drying times.
On the entrance side, parts of the facade were demolished in parallel in order to add elevators up to the upper floor.
All work had to be carried out in consideration of the existing tenants in a residential area. Building access was available during the entire construction period, with a few exceptions.
Completion: expected in March 2021
Location: Barnetstraße/Steinstraße in 12305 Berlin
Client: STADT UND LAND Wohnbauten-Gesellschaft mbH
Executing company: ARIKON Sanierungsbau GmbH
Construction time: 03/2020 – 03/2021
Implementation: General contractor in extended shell construction/ partial extension
Construction volume: 6,3 Mio. EUR
Special features:
- Conversion measures in the residential area environment
- Conversion for partial letting
- Special weather protection in all building conditions
Staircase extension over 2 floors
Erection of the semi-prefabricated parts on the staircases after demolition of the roof ceiling
Main and intermediate landings in cast-in-place concrete design
Lift underpasses in the entrance area in in-situ concrete construction
Delivery and moving of the wall and ceiling surfaces
Walls are placed in a short time to form a flat floor plan
After the roof elements have been laid, the roof can be waterproofed immediately.
