DESIGNING MODERN BUILDING FAÇADES · 2018-12-11 · Vertical fins in courtyard will also benefit...
Transcript of DESIGNING MODERN BUILDING FAÇADES · 2018-12-11 · Vertical fins in courtyard will also benefit...
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Ar. Carmelo Casas
DESIGNING MODERN BUILDING FAÇADES
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The façade of a building is the first impression that
suggest that the structure has something special to offerA representation of the
architect’s creative vision and desire to impress with
something unique and out of the ordinary
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STAND OUTADAPTIVE
Grand HyattLPU Davao
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Case study 1│LPU Davao
Site conditions and building orientation
ADAPTIVE
Local traditions
Complimenting color palettes
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Case study 2│LPU Davao
Located in a Planned Unit Development (PUD)
University Campus
Target date of completion June 2019Developed by Lyceum of the
Philippines University
Projected occupancy of 10,000 students
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LPU Davao│BLEND IN
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N
>
UTILITIES
JPL BUILDIN
G
PARKING
COMMERCIAL BUILDING
SHL BUILDIN
G
ENTRANCE
Site DevelopmentMasterplan
sunset sunrise
habagat
amihan
RESIDENTIAL
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EW
Site AnalysisShadow study
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Sit AnalysisShadow study
S
W E
NEast & West facades most exposed.
Vertical fins in courtyard will also benefit southern exposure
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Temperature controlSimulations
Daylight Factor
Glare
(visual comfort)
Illuminance
(incl. artificial lighting)
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Façade studyCultural references | Local traditions
Recognizing the founding pioneers,
and early inhabitants,
emphasizing their SHARED
HISTORIES, CULTURAL HERITAGE,
TAPESTRY OF TRADITIONS,
and their decades-old, harmonious
Ten tribes. Three cultures. One Mindanao.
10 colour zones referencing the tribes of Davao & festivals of MindanaoAta | Matigsalog | Ovu-Manuvo | Djangan | Tagabawa | Tausog |
Maguindanao | Maranao | Kagan | Sama~ Kadayawan | Kalilangan ~
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Façade studyCultural references | Local traditions
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Exterior Lighting
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Exterior LightingLighting Study
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Exterior LightingLighting Study | Scheme 1
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Exterior LightingLighting Study | Scheme 2
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Facade StudiesSection | Facade Study
Aluminium profile shading system
Low-emissivity glass curtain walling
Projecting edge to classroom module
Roof overhang provides solar shading & wind collectionSolar Panels
12
3
4
5
4
32
1
4
3
21
5
4
3
3
1 2
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Facade StudiesSection | Facade Study
TAILOR-MADE OPTIMIZED PUNCH WINDOWS TAILOR-MADE OPTIMIZED STICK-TYPE CURTAINWALL
TAILOR-MADE OPTIMIZED LOUVERSTAILOR-MADE OPTIMIZED UNITIZED CURTAINWALL
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Integrated Approach to Design and Engineering
We believe that the building envelope, like the human skin, is an important interface that provides protection,
comfort and aesthetics.
Finding the right balance between different systems of the building is absolutely essential for effective &
efficient contemporary projects.
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Design ConsiderationsIntegrated approach to design and engineering
Short-Term Costs / Investments (CAPEX)
» lower costs for operations and maintenance (energy costs)» maximization of GFA» easy and safe cleaning of the facade» resistance to degradation resulting to enhanced weather-tightness
» tailor-made design & cost optimized facade solutions» optimized inexpensive right-sized internal systems of
the building
» structural sustainability» ease of construction and maintenance (buildability)» water tightness» air tightness
» daytime aesthetics» night-time look (“secondary architecture”)» readability of the concept behind the design
Mid- and Long-Term Costs (OPEX)
System Reliability
Architectural Expression (Style and Look)
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Design ConsiderationsIntegrated approach to design and engineering
Safety and Security
» thermal comfort of occupants» light/daylight comfort of occupants» acoustic comfort of occupants» enhanced productivity and happiness
» resistance to natural disasters» resistance to acts of aggressive and detrimental human behavior» resistance to acts of terror
» interaction with people through media solutions» possibility to increase profits through advertisement» interaction to environment through daylighting
» Building Standard compliance (NBC, ASHRAE, ASTM, etc.)» Green Building Compliance (USGBC LEED, UK BREEAM, PhilGBC BERDE, etc.)» compatibility with new requirements (seamless high speed data transmission etc.)
Comfort and Productivity
Relations with the Society
Innovations & Compliance with newest trends
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Conclusions
Glazing systems should be properly selected according to the building’s location to achieve the most efficient and cost effective solution.
1
Glazing properties like U-Value, Solar Heat Gain Coefficient(SHGC) and Visible Light Transmission (VLT) have their own significant effects on building overall performance.
2
Glazing selection can significantly affect the cost, energy consumption and carbon emission of a building
3
For a tropical climate like in Davao, Philippines, significant amounts of building loads come from solar gain compared to conduction gain which means a low U-Value is still helpful during hot days to keep the heat out, but a low SGHC is the most important window property in warm climates.
4
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Case Study 2│Metrobank Center –Grand Hyatt
STAND OUTUnique crown
Lighting designBold and contemporary color
palettes
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Case Study 2│Metrobank Center –Grand Hyatt
281.78 m
Mixed-use skyscraper
Completed 2017Developed by Federal Land Inc.
Currently the tallest building in the Philippines
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BAY SECTION
METAL CLADDING
HORIZONTAL METAL FINFIRE SEALSPANDREL
AQUA BLUE REFLECTIVE
DOUBLE GLASS UNITVERTICAL METAL FIN
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Advantages of Curtain Wall
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+ Aesthetics
Advantages of Curtain WallModern finish with clean lines; Glass & Aluminum are resistant to corrosion
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+ Lightweight
+ Aesthetics
Advantages of Curtain WallModern finish with clean lines; Glass & Aluminum are resistant to corrosion
Fast and easy installation on site
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+ Structural Performance
+ Lightweight
+ Aesthetics
Advantages of Curtain Wall
Span multiple floors while dealing with factors like thermal expansion, contraction, water-diversion, building sway & movement effectively
Modern finish with clean lines; Glass & Aluminum are resistant to corrosion
Fast and easy installation on site
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+ TransparencyView is maximized & bring in light which reduces lighting power consumption
+ Structural Performance
Span multiple floors while dealing with factors like thermal expansion, contraction, water-diversion, building sway & movement effectively
+ Lightweight
+ Aesthetics Modern finish with clean lines; Glass & Aluminum are resistant to corrosion
Advantages of Curtain Wall
Fast and easy installation on site
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Metrobank CenterGrand Hyatt uses Insulated Glass
UnitsAlso known as Double /
Triple Glazing, IGUs
consisting of 2 or 3 window
glass panes separated by a
vacuum or glass-filled space,
hermetically sealed
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Insulated Glass Units
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METAL CLADDING
HORIZONTAL METAL FINFIRE SEALSPANDREL
AQUA BLUE REFLECTIVE
DOUBLE GLASS UNITVERTICAL METAL FIN
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METAL CLADDING
HORIZONTAL METAL FINFIRE SEALSPANDREL
AQUA BLUE REFLECTIVE
DOUBLE GLASS UNITVERTICAL METAL FIN
Metrobank Center-Grand Hyatt uses unitized system.
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Unitized systems are pre-fabricatedin modules off-site and delivered
in panels.
UNITIZED SYSTEM
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Why use unitized system for Metrobank Center-Grand Hyatt?1. Due to the large size of the project and a lot of repetition of the glass panel modules, the said system are better able to exploit the benefits of factory condition manufacturing. 2. Another advantage is high quality control, due to tight tolerances of fabrication in a climate-controlled environment. 3. Unitized system requires lower installation time on site, thereby decreasing field labor. The system can be installed in a third of the time of a stick-built system. The bulk of unitized system storage is off-site, which is advantageous for tight job-sites.
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One of the design considerations of the curtain wall is the building movement caused by Seismic and wind forces.
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The Metrobank Center-Grand Hyatt curtain wall uses performance-based
design.
Wind tunnel study results were used in the design.
Wind affects drift of the building.
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OUTRIGGER
OUTRIGGER
def. a structural system for a tall building that uses a central core of concrete, with massive horizontal concrete beams that provide stability against wind
loads
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Storey drift is a horizontal movement of a floor level relative to the bottom floor
level.
High-rise Buildings have higher inter-storey drift than shorter buildings.
Horizontal Force(Due to wind and
earthquake)
Exaggerated SectionShowing Building Response to Forces (Wind and
Earthquake)
Inter-Storey Drift
VISCOUS DAMPER
def. a form of shock absorber designed to reduce structural damage to buildings caused by
earthquakes.Since the curtainwall is
anchored floor to floor of the building, the curtainwall
connection has to be flexible yet strong enough to move
with the displacement of the building without incurring
damage.
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The Metrobank Center- Grand Hyatt has viscous dampers connected to outriggers in the middle of the
tower.
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The outrigger with the dampers reduces the vibrations induced by both strong winds and
earthquakes.
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Because of the Outriggers with the Dampers, the inter-storey drift and acceleration of the building was reduced dramatically, lessening the stress on the connections of the
curtain wall to the structure
Horizontal Force
Inter-Storey Drift
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Crown TrussStructural steel truss
Wind forces are based from results of Wind Tunnel Test
Connected to the concrete frame at the base at el. 251.2m
Spire Truss
Crown
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Spire
Concrete filled steel section with radius ranging from 650mm at the
base to 275mm at the tip
Analysed against vortex shedding risk
Base supported by a 2m thick beam at L66
With cross brace at el. 251.765m
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Spire
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Spire
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Designers can turn IDEAS into REALITYwith the help of modern technology, new building materials, and knowledge
of specialty consultants
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Thank you!