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Introduction to Fire Safety Engineering
José L. ToreroA. James Clark School of Engineering, The University of Maryland, USA
Fire S
afety En
gin
eering
: Mo
re than
a co
mb
ustio
n p
rob
lem ad
dressin
g
a com
bu
stion
pro
blem
5/28/2018 2ES
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Fire• Physical phenomenon that evolves in space and time –
affect the wellbeing of people and property
Ignition
Voluntary
Accident
Natural
Human
Growth
Losses Pro
tectio
n
SafetyRegulation
Codes & Profession
Crime
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Example: ConstructionArchitectural
Concept
Consultation
with Parties
No
Fire Safety•Authorities (Building
Certifiers)
•Fire Brigades
Yes
Construction
Inspection
Structural
Design
Design of
Services
Design of Fire
Safety
Systems
Fire Safety•Authorities (Building
Certifiers)
•Fire Brigades
NoYes
AcceptanceES
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The Cost of Error
Construction
Acceptance
DesignArchitecture£
£1 £2
£ Unlimited
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Structures
Architecture• Smoke Management
• Evacuation
• Access for Fire Brigade
Civil
Engineering• Fire Resistance
Mechanical
Engineering• HVAC systems
• Hydraulic Systems
Fire Safety
Engineering
• Detection & Alarm
• Smoke Management
• Suppression & Control
• Fire Resistance
• Evacuation
• Access for F.B.
•Security
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•A
ffec
ts e
very
asp
ect
of
bu
ildin
g d
esig
n
Time Lines
t
%
100%
Structural
Failure
Evacuation
Completed
Untenable
Conditions
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Fire Safety Strategies
• Prescriptive Design
• Performance Based Design
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Life Safety
Compartmentation
Response
Structure
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Life Safety
Compartmentation
Response
Structure
Common
Sense
Common
Sense
Common
Sense
Specify According to
Manufacturers Standard Test
Data
Locate According to
manufacturers
Specifications
Define
according to
simple rules
(Common
Sense)
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t
% Structural
Failure100%
Evacuation
Completed
Untenable
ConditionsSolutionE
SIA
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Can the same rules
be applied?
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Intercontinental Hotel,
Shanghai
Charles de Gaulle Airport,
ParisThe Dome
London
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Compliance vs. Profession
• Limited to conventional buildings
– Conventional is less and less frequent
– Construction has evolved faster than codes
– Construction has evolved faster than our capacity to train authorities/engineers/fire service
• Codes can only be used as a tool for the competent professional
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The Objectives
te<<<<tf
te<<<<tS
ts→
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Summary
• Fire Safety Engineering is a complex field that interacts with all other disciplines in the construction process
• Codes and Standards (classic practises) are viable only for simple buildings – complex buildings require higher level engineering
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Example
• Santiago Calatrava– Architect– Date of Birth: July 28th, 1951
– Gold Medal AIA, USA
– Grand Medaille D’Or Academied’Architecture, Paris, France
– Il Principe e l’Architetto, Italy
– Sir Micha Black Medal, Royal College of Art, UK
– Gold Medal IStructE, UK
– Premio Principe de Asturias, Spain
– More than 10 Honorary Doctorates
ESIA
–Ec
ole
de
s Sc
ien
ces
de
l’In
cen
die
et
Ap
plic
atio
ns
–O
ber
nai
, 27
m
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High Rise Buildings
“Turning Torso” (Malmo, Sweden)
“The Spire”
(Chicago, USA)
ESIA
–Ec
ole
de
s Sc
ien
ces
de
l’In
cen
die
et
Ap
plic
atio
ns
–O
ber
nai
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• Evacuation– Detection– Alarm– Displacement away from the fire– Crowd management
• Compartmentalization– Slows fire growth– Minimizes smoke spread
• Response– Automatic (fire suppression)– External– Internal
• Structural Integrity
Fire Safety StrategiesE
SIA
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What are the Problems
• Compartimentation
• Structural
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Dia-Grid
• Allows for unusal deformations
that have the potential to break
compartimentation
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Detailed Models
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Detailed Models
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Allen Lambert Gallery (Canada)
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Unprotected
structure
High Ceilings
•Delayed detection
•Delayed sprinkler
Activation
Smoke
Management
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Egress Problem
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Combined
Construction
Methods
(Modern-
Classic)
Refurbishment
of Historical
Monument
Complex use of
materials
(plastic, steel,
stone, etc.)
Interconnected
Multiple Uses
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Therefore
• For involuntary man slaughter?
Wanted
SantiagoCalatrava
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Wanted
ChristianPortzamparc
Wanted
James Stirling
Wanted
I.M.Pei
Wanted
Frank GeHry
Wanted
RenzoPiano
Wanted
NormanFoster
Wanted
Richard Rogers
Wanted
ZahaHadiD
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•No!•The solution is: oproper engineering!
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When it is done right• Kohn Pedersen Fox
• 80 Storey Building in London
• Formed of many 4 storey “villages”
• Arup: Fire Engineering
Heron Tower
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Key Issues
• How Would a 4 Storey Fire affect:
o The structural performance of the building?
o Egress?
o Fire Detection & Suppression?
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Modelling of the Fire
Figure 3.1: Default domain of atrium building
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Today: Design for Implicit Performance
Standardization of Space
Standardization of Response
One Size Fits All
Means of Escape
Compartmentation
Geometry
Active
Passive
Fire Service
Consequence:Enormous Safety Factors
Waste
Unidentified Mistakes
Compromised
Aesthetics
Loss of Function
Unsustainable
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Tomorrow: Design for Explicit Performance
Materials
Burning
Smoke/Heat
Structure
People
Design
Education
Quantifiable Safety Factors: Sustainable
Material
Science
Reactive
Flow
Fluid
Mechanics
Heat Transfer
Solid
MechanicsPhysiology
Psychology
Sociology
Architecture
Regulatory
Law
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The structure has to be seen! – I wanted to leave the steel structure
exposed but Fire Safety regulations did not allow me to do so – we had to attach fake stained
bronze structural elements to approach what I was looking for –
every time I think about it I feel like crying!
Ludwig Mies van der Rohe, Seagram Building, NY, 1958
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