AfH Student Awards Buro Happold 2014
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Transcript of AfH Student Awards Buro Happold 2014
Buro Happold the engineering of excellence
Engineering an Healing Environment for a High Rise Hospital
Architects for Health A Tower for Health January 2014
David Leversha CEng MIStructE Mst(Cantab) MEng(Hons)
Project Director
Simon Bourke Director of Healthcare
Buro Happold the engineering of excellence
Introduction
• What is the challenge? • What is tall? • Laws of Physics • Wind & Seismic • Servicing and redundancy • Fire • Circulation • Key Healthcare drivers • Natural light & Ventilation • Street Level Comfort
Buro Happold the engineering of excellence
• Structure
• Fire
• Infection Control
• Security
• Energy reduction
• Water reduction
• Minimising waste
• Materials
• Flexibility
• Daylight
• Thermal Comfort
• Acoustics
• People Flow
• Traffic
Patient Experience Safety Sustainability
Patient focussed design
Buro Happold the engineering of excellence
How do you get one of these…. ….to !t into one of these?
Buro Happold the engineering of excellence
What is Tall?
• Perhaps tall when lateral loads dominate the structural form due to strength and serviceability (de"ection criteria).
• No speci!c height that de!nes a tall building.
Buro Happold the engineering of excellence
Impact of physics on the building
Buro Happold the engineering of excellence
Impact of physics on the building
Imag
e co
urte
sy o
f Ton
y M
cLau
ghlin
Buro Happold the engineering of excellence
Impact of physics on the building
Buro Happold the engineering of excellence
Impact of physics on the building
Buro Happold the engineering of excellence
Standard framing options
• Lateral loads must !nd their way to the ground
• Explore different options for transferring lateral and gravity loads
• Standard Height to breadth ratios =
• Space HAS to be usable. Max distance to façade circa 12m.
Buro Happold the engineering of excellence
The art of the engineer…..
• Combine different materials and utilise their relative strengths for maximum gain, whilst combining stability zones for plant
North Lake
Buro Happold the engineering of excellence
Design Constraints
Public
Ward
Office
Buro Happold the engineering of excellence
Wind Comfort
• Comfort of building occupiers
• Tall buildings cause strong winds at the base due to downwash and corner acceleration which cause comfort and safety concerns in strong winds
• Massing, façade design and canopies should be developed to reduce downwash or to provide mitigation and shelter in key locations
Buro Happold the engineering of excellence
Tall Buildings – Integration
Buro Happold the engineering of excellence
Lift Strategy • Waiting times • Helipad location • Size • Separation of "ows • Impact on Core
Goods and Fire Lift
Passenger Lifts
Bed Passenger Lifts
Buro Happold the engineering of excellence
Impact of core on area
Buro Happold the engineering of excellence
Economics
Buro Happold the engineering of excellence
Buro Happold the engineering of excellence
Plant
Buro Happold the engineering of excellence
Water
High Rise Booster Pumps
Water Storage Low Rise Booster Pumps
Buro Happold the engineering of excellence
Drainage
Foul Drainage Headers At Interim Floors
Buro Happold the engineering of excellence
Ventilation
• Wind pressure is a primary consideration
• Natural ventilation is achievable for rooms on the external façade – using a perforated ventilation façade system
• Full mechanical ventilation provides best control against wind pressure.
Centralised plant
Centralised plant
Buro Happold the engineering of excellence
Buro Happold the engineering of excellence
Maximising Natural Light
• Buttressed structural "oor plate of Burj Khalifa naturally lends itself to maximising external façade and thus enhancing usable space.
Buro Happold the engineering of excellence
Fire Fighting
Required on all buildings over 60 metres high
• Position adjacent to lift cores
• Provide a high and low pressure systems to supply the upper and lower half of the tower
Buro Happold the engineering of excellence
Conclusions
• Skill of the architect is to incorporate the constraints imposed by mother nature and express them in the facade
• Traditional adjacencies need to be challenged and new methods of working explored
• Success of any project is dependent on selecting the right team
www.burohappold.com
The engineering of excellence