Aquapanel Facade Systems: Future of the facade systems - lightweight facade envelope

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Future of the façade systems
Lightweight façade envelope

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Future of the façade systems
Lightweight façade envelope
Building envelope Buildings have exterior closing components, exterior wall, façade, roof…
Façade Design element as a representative part of the building envelope
Exterior wall Technical, structural and functional component of the building envelope

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Future of the façade systems
Lightweight façade envelope
Facade architecture reflects the spirit of time and the
state of technical development

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Future of the façade systems
Lightweight façade envelope
Architecture trends
Urban, individual, representative, traditional, modern
Straightforward architecture, freeform architecture, building with organic forms,
Multidimensionality, mix of different materials and surface structures

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Lightweight façade envelope
Building physics advantages of
lightweight façade constructions
 Energy-efficient slim wall systems,
floor space maximization
 Effective sound and heat protection
 Non-combustible constructions
(Building material class A1)
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Lightweight façade envelope
Bauphysikalische Vorteile leichter
Fassadenkonstruktionen
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approx.
60 - 90
approx.
350
approx.
180
approx.
230
Wall weight
kg/ m²
U-Value
d = thickness of construction (in mm)
KNAUF Exterior Wall
Sand-lime brick + ETICS
Cellular concrete
Lightweight brick

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Lightweight façade envelope
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• Sound protection of lightweight wall
constructions
• Many test certificates for different wall
constructions
• Test report for double stud wall (current) up
to 74 dB available

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Lightweight façade envelope
Static advantages of lightweight façade
constructions
 Low weight, high stability
 Optimization of the building structure and
foundation construction possible
 Ideal system for new buildings,
refurbishments, redensifications,
restorations with storey increase
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9. Future of the façade systems
Lightweight façade envelope
Economical / logistical advantages of
lightweight façade constructions
 Fast assembly, short construction times,
optimization of the construction process,
quicker completion
 Flexible, building-adaptable construction
system
 Suitability for prefabrication
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Lightweight façade envelope
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Lightweight façade envelope
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Hybrid construction
• Primary skeleton construction
(steel, reinforced concrete or timber
construction)
• Exterior wall / façade as a self-supporting
construction
• Lightweight façade constructions
as on site assembly or as a prefabricated
system

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Lightweight façade envelope
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Double or single stud
construction in front
of floors
Single stud
construction in front
of floors with ETICS
Double or single stud
construction
between floors
Double or single stud
construction with
curtain wall

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Lightweight façade envelope
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Timber frame
construction
Ventilated façade

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Lightweight façade envelope
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Various details

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Lightweight façade envelope
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What is important for facades and Exterior Walls?
They are constantly exposed to changing weather conditions!
What are the requirements?
• Structural stability – fitness for use
• Building physics
• Corrosion protection
• Suitable coating systems

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Lightweight façade envelope
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What are the loads the facade has to work with?
• Dead load
• Traffic loads
• Wind loads
• Snow and ice loads
• Seismic loads

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Lightweight façade envelope
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What can happen, if loads are not considered correctly?

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Lightweight façade envelope
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Example
- available technical documentation:
technical drawings, details, etc.
- technical requirements:
floor heights, wind loads, etc.
- possible applications:
assembly in front of floors, assembly between floors,
ventilated façade, exterior ceiling
Which information is needed?

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Lightweight façade envelope
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Example
Project requirements (imaginary):
- assembly: between floors
- windloads:
- floor height: 3.60 m
q = 0,9 kN/m²

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Lightweight façade envelope
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Example
[With reduced stud spaces (400 mm)]
step 1
step 2
C

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Lightweight façade envelope
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• Project-related consulting in early planning phases
• Preparing of system recommendations (static / building physics precalculation)
• Preliminary static calculation of the substructure for exterior walls
undsuspended ceilings with AQUAPANEL
• Standard design details / support for detailed planning

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Lightweight façade envelope
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Public buildings ► ◄ Residential buildings
Industrial buildings ►
◄ Commercial buildings

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Lightweight façade envelope
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Landmark Tower Bremen, Germany

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Lightweight façade envelope
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Landmark Tower Bremen, Germany - Project information
Residential building
20 storeys (approx. 70 m building height)
Flats with 67 – 168 m² living space

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Lightweight façade envelope
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Landmark Tower Bremen, Germany
Bremen is near the Northsee in the
northern part of Germany.
Because of this there are special
requirements regarding the windloads in
the area.

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Lightweight façade envelope
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Landmark Tower Bremen, Germany
Further project requirements:
Thermal transmittance U = 0.23 W/(m²K)
Max. deflection of building ceilings 15 mm
Sound insulation requirement 58 dB

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Lightweight façade envelope
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Landmark Tower Bremen, Germany
Wind loads in wind tunnelPlan
Small-scale building model in
wind tunnel tests

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Lightweight façade envelope
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Landmark Tower Bremen, Germany
In the calculations:
In the ordinary wall sections, the drywall construction
wall is constructed with two back-to-back profiles.
Profile sizes in the outer shell 2xCW 150/50/06 mm
to 2xUA 150/40/2 mm. The stud spacings are
between 417 and 625 mm.
The inner shell is constructed from 1x CW 75/50/06.

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Lightweight façade envelope
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Landmark Tower Bremen, Germany
In the calculations:
Profile spacings in the wall construction in the field areas.

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Lightweight façade envelope
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Landmark Tower Bremen, Germany
In the calculations:
An additional profile is used in the corners for practical reasons.

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Lightweight façade envelope
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Landmark Tower Bremen, Germany
Thermal Transmission Design
Average U – value = 0.23 W/(m²K)
Thermal bridges are taken into account here
Wall construction with MW WLG 035 insulation

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Lightweight façade envelope
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Landmark Tower Bremen, Germany
Sound insulation requirements
Based on the Spanish test certificate the design is checked taking into
account a sliding ceiling slab connection.
Fulfilled with R`w = 60 dB

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Lightweight façade envelope
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Landmark Tower Bremen, Germany
Slab Connection
Design deflections of 15 mm
in the whole building
- Sliding slab connection in
facade area
- Warm bridges prevented
with WLG 035 vertical
Insulation thicknesses of 140 mm and 60 mm

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Lightweight façade envelope
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Landmark Tower Bremen, Germany
Impressions
Completion

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Lightweight façade envelope
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Clout No 7 Stuttgart, Germany

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Lightweight façade envelope
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Clout No 7 Stuttgart, Germany

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Lightweight façade envelope
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Project informationKnauf AQUAPANEL® Exterior Wall-System
with ALUCOBOND curtain wall
OBJECT DATA 80 MILL / 61 M HIGH / 18 FLOORS
RESIDENTIAL AND HOTEL PROJECT
• Wall system: Double stud wall,
between floors
• Wall thickness: 328-365 mm
• Wall height: approx. ca. 3 m
• U-value: < 0,20 W/m²/K
• Rw,r: ≥ 48 DB
• Wind load: until 1,7 KN/m²

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Lightweight façade envelope
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Clout No 7 Stuttgart, Germany
KNAUF Exterior wall
For weight
reduction, decision
to use an exterior
wall in lightweight
construction.

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Lightweight façade envelope
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Clout No 7 Stuttgart, Germany - Construction phase

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Lightweight façade envelope
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Clout No 7 Stuttgart, Germany - Construction phase

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Lightweight façade envelope
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Clout No 7 Stuttgart, Germany - Construction phase

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Lightweight façade envelope
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Clout No 7 Stuttgart, Germany - Construction phase

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Lightweight façade envelope
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Clout No 7 Stuttgart, Germany - Construction phase

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Lightweight façade envelope
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International References
Centro Comercial Peñalolen,
Santiago de Chile
Formula 1, Abu Dhabi,
United Arab Emirates
Iceberg ice stadium, Sotchi,
Russia
AC HOTEL
Barcelona, Spain
Marsilius-Arkaden, Heidelberg,
Germany
• More than 20 years experience
in exterior walls
• More than 50.000 projects
worldwide without claims

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Thank you for your attention…..