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Category 1: Buildings
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Redesign of Timber Roof Construction - Berlin, Germany
SE
Architect
Architekt Schnabel, Berlin
Engineering Office
Ingenieurbüro Dr. Häfner
Construction Period 01/2015 - 05/2015
The project concerns the redesign of the roof framework for new rooftop flats
in Berlin. It is a typical residential building of the Wilhelmina period with a 5
storey of masonry wall construction, ceiling timber beam/joists and timber
roof framework with rafters and purlins. Conceptual design was created
in collaboration with architect and owner/client for layout of new flats. The
timber roof structural system was changed after removal of several columns
and timber bracing.
SCIA Engineer
was used to build a
3D model
of the roof construction with
rafter, partially strengthened purlins, stayed columns, composite ceiling
beams and new steel bracing. Structural linear/nonlinear analysis was
performed with self-weight, snow and wind action according to EC1 and
EC2. In the next step the program was used for the design ULS/SLS check
of structural elements according to EC5 timberwork, EC3 steelwork and
EC6 masonry. In the end we investigated an alternative of existing solid
timber ceiling as composite beam strengthened by high strength material
of laminate veneer lumber (LVL). The approach used allowed for an
effective structural engineering
with 3D modelling, analysis and design for
cost-effective re-construction
, especially for various construction states.
It helped to face the challenges like FE modelling of mixed materials of
timber, steel and wood composite and composite beam connections by rigid
coupling. Moreover, it streamlined the planning of structural details with steel
elements in collaboration with architect.
Ingenieurbüro Dr.-Ing. Häfner
Contact
Lothar Dr. Häfner
Address Sophie-Charlottenstr. 9-10
14059 Berlin, Germany
Email
IBH-SE&L&T offer engineering and consulting services in the fields of
structural engineering and civil planning as well as in other fields:
• Structural engineering with 3D modelling, visualization, analysis, design
with ULS /SLS check and detailing with usual and advanced technologies.
• Preliminary design and construction/supervision management.
• Experts in forensic investigation for feasibility studies, noise, wind action,
causes of structural failures.
• Providing Lecturing & Training to national and international businesses
and University Institutes.
