BE Presentation [Compatibility Mode]
-
Upload
adnan-r-ahmed -
Category
Documents
-
view
221 -
download
0
Transcript of BE Presentation [Compatibility Mode]
-
8/2/2019 BE Presentation [Compatibility Mode]
1/48
Post FirePost FirePost FirePost FirePost FirePost FirePost FirePost Fire
Assessment ModelAssessment ModelAssessment ModelAssessment ModelAssessment ModelAssessment ModelAssessment ModelAssessment Model
ConcreteConcreteConcreteConcreteConcreteConcreteConcreteConcreteStructuresStructuresStructuresStructuresStructuresStructuresStructuresStructures
-
8/2/2019 BE Presentation [Compatibility Mode]
2/48
Post Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPresented byPresented by
Usman ChoudhryUsman Choudhry CECE--8585Wasif AmjadWasif Amjad CECE--9999
Omer AbidOmer Abid CECE--9696
Adnan Rais AhmedAdnan Rais Ahmed CECE--135135
Adil JavedAdil Javed CECE--8989
Project supervisorProject supervisor
Prof. Dr. S.F.A. RafeeqiProf. Dr. S.F.A. Rafeeqi
CoCo--SupervisorSupervisor
Ms. Tehmina AyubMs. Tehmina Ayub
-
8/2/2019 BE Presentation [Compatibility Mode]
3/48
Presentation OutlinePresentation OutlinePresentation OutlinePresentation OutlinePresentation OutlinePresentation OutlinePresentation OutlinePresentation Outline
Title of the project.Title of the project. The objectives of the project.The objectives of the project.
Th f h r Th f h r
Acquired knowledge base.Acquired knowledge base.
The development of strategic model.The development of strategic model.
Operation of software.Operation of software.
Case scenario.Case scenario.
-
8/2/2019 BE Presentation [Compatibility Mode]
4/48
OBJECTIVESOBJECTIVESOBJECTIVESOBJECTIVESOBJECTIVESOBJECTIVESOBJECTIVESOBJECTIVES
Proposing a model for the assessment ofProposing a model for the assessment ofbuildings affected by fire.buildings affected by fire.
Providing a platform for further study &Providing a platform for further study &research for assessment and evaluation ofresearch for assessment and evaluation ofbuildings affected by fire.buildings affected by fire.
-
8/2/2019 BE Presentation [Compatibility Mode]
5/48
SCOPESCOPESCOPESCOPESCOPESCOPESCOPESCOPE
Forensic study of Reinforced ConcreteForensic study of Reinforced Concrete
Buildings (commercial & residential)Buildings (commercial & residential)
subjected to fire.subjected to fire. To identify extent of damage to structuralTo identify extent of damage to structural
elements based on temperature estimates.elements based on temperature estimates.
To prescribe rating to individual structuralTo prescribe rating to individual structural
elements.elements.
-
8/2/2019 BE Presentation [Compatibility Mode]
6/48
STRATEGY USED FORSTRATEGY USED FORSTRATEGY USED FORSTRATEGY USED FORSTRATEGY USED FORSTRATEGY USED FORSTRATEGY USED FORSTRATEGY USED FOR
DEVELOPMENT OF MODELDEVELOPMENT OF MODELDEVELOPMENT OF MODELDEVELOPMENT OF MODELDEVELOPMENT OF MODELDEVELOPMENT OF MODELDEVELOPMENT OF MODELDEVELOPMENT OF MODEL
Develop a knowledge base through detailedDevelop a knowledge base through detailed
study.study.
Defining scope and objective.Defining scope and objective.
ent cat on o re evant parameters to eent cat on o re evant parameters to eincorporated in generic model of assessment.incorporated in generic model of assessment.
-
8/2/2019 BE Presentation [Compatibility Mode]
7/48
Post Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment Model
BaseBase
-
8/2/2019 BE Presentation [Compatibility Mode]
8/48
Temperature Effects on Physical & ChemicalTemperature Effects on Physical & ChemicalTemperature Effects on Physical & ChemicalTemperature Effects on Physical & ChemicalTemperature Effects on Physical & ChemicalTemperature Effects on Physical & ChemicalTemperature Effects on Physical & ChemicalTemperature Effects on Physical & Chemical
Structure of ConcreteStructure of ConcreteStructure of ConcreteStructure of ConcreteStructure of ConcreteStructure of ConcreteStructure of ConcreteStructure of Concrete
Loss of evaporable water.Loss of evaporable water.
Dehydration and conversion.Dehydration and conversion. Porosity.Porosity.
MeltingMelting
-
8/2/2019 BE Presentation [Compatibility Mode]
9/48
-
8/2/2019 BE Presentation [Compatibility Mode]
10/48
Factors Affecting Compressive Strength ofFactors Affecting Compressive Strength ofFactors Affecting Compressive Strength ofFactors Affecting Compressive Strength ofFactors Affecting Compressive Strength ofFactors Affecting Compressive Strength ofFactors Affecting Compressive Strength ofFactors Affecting Compressive Strength of
Concrete at High TemperaturesConcrete at High TemperaturesConcrete at High TemperaturesConcrete at High TemperaturesConcrete at High TemperaturesConcrete at High TemperaturesConcrete at High TemperaturesConcrete at High Temperatures
WaterWater--cement ratio.cement ratio.
Type of aggregate.Type of aggregate.
Age of specimens.Age of specimens.
o g oo g.o g oo g.
Loading.Loading.
Cooling of specimensCooling of specimens
Effect of cement blendEffect of cement blend
Moisture contentMoisture content
-
8/2/2019 BE Presentation [Compatibility Mode]
11/48
DAMAGING EFFECTSDAMAGING EFFECTSDAMAGING EFFECTSDAMAGING EFFECTSDAMAGING EFFECTSDAMAGING EFFECTSDAMAGING EFFECTSDAMAGING EFFECTS
OF FIRE ON CONCRETEOF FIRE ON CONCRETEOF FIRE ON CONCRETEOF FIRE ON CONCRETEOF FIRE ON CONCRETEOF FIRE ON CONCRETEOF FIRE ON CONCRETEOF FIRE ON CONCRETE..
External cracking.External cracking.
Delamination and spalling.Delamination and spalling.
Internal micro cracking.Internal micro cracking.
Chemical changes within concrete.Chemical changes within concrete.
Strength reduction.Strength reduction.
-
8/2/2019 BE Presentation [Compatibility Mode]
12/48
-
8/2/2019 BE Presentation [Compatibility Mode]
13/48
PERFORMANCE OFPERFORMANCE OFPERFORMANCE OFPERFORMANCE OFPERFORMANCE OFPERFORMANCE OFPERFORMANCE OFPERFORMANCE OFREINFORCEMENT IN FIREREINFORCEMENT IN FIREREINFORCEMENT IN FIREREINFORCEMENT IN FIREREINFORCEMENT IN FIREREINFORCEMENT IN FIREREINFORCEMENT IN FIREREINFORCEMENT IN FIRE
Strength of steel at a given temperature can beStrength of steel at a given temperature can bepredicted with reasonable confidence.predicted with reasonable confidence.
Steel bars need to be protected from exposures toSteel bars need to be protected from exposures totem erature in excess of 250tem erature in excess of 250--300c.300c.
Concrete and steel exhibit similar thermal expansionsConcrete and steel exhibit similar thermal expansionsup to a temperature of 400c.up to a temperature of 400c.
Creating impermeable regions where moisture mayCreating impermeable regions where moisture maybe trapped.be trapped.
Alters the heat flow near the reinforcement tending toAlters the heat flow near the reinforcement tending toreduce the temperature.reduce the temperature.
High thermal conductivity resulting in considerableHigh thermal conductivity resulting in considerable
expansion crippling the structural system.expansion crippling the structural system.
-
8/2/2019 BE Presentation [Compatibility Mode]
14/48
Post Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment Model
Development Of ModelDevelopment Of Model
-
8/2/2019 BE Presentation [Compatibility Mode]
15/48
Methodology For Project &Methodology For Project &Methodology For Project &Methodology For Project &Methodology For Project &Methodology For Project &Methodology For Project &Methodology For Project &Development Of ModelDevelopment Of ModelDevelopment Of ModelDevelopment Of ModelDevelopment Of ModelDevelopment Of ModelDevelopment Of ModelDevelopment Of Model
Development of Performa on the basis ofDevelopment of Performa on the basis of
thorough literature review from scientificthorough literature review from scientificjournals, books and research papers.journals, books and research papers.
Development of model through softwareDevelopment of model through software
techniques on the basis of informationtechniques on the basis of information
collected through the survey performa.collected through the survey performa.
-
8/2/2019 BE Presentation [Compatibility Mode]
16/48
INPUT INFORMATION
PHYSICAL
APPEARANCE
CAUSES
PRODUCT
MODEL
STUDY OF AFFECTED
BUILDING AFTER FIREHISTORY OF BUILDING
BEFORE FIRE
OTHER
PARAMETERS
-
8/2/2019 BE Presentation [Compatibility Mode]
17/48
TemperatureTemperatureTemperatureTemperature Color change Color changeColor changeColor change Changes in Changes inChanges inChanges in
physicalphysicalphysicalphysicalappearancesappearancesappearancesappearances
ConcreteConcreteConcreteConcrete
conditionconditionconditioncondition
O to 290C none Unaffected Unaffected
290 to 590C Pink to red Surface cracking at
300C.
Deep cracking at
550C.
Sound but strength
significantly
reduced.
590c to 950C Whitish grey Spalling andexposing
reinforcement at
800C.
Powdered , light
colored dehydratedpaste at 900C
Weak and friable.
950C and above Buff Extensive spalling Weak and friable.
-
8/2/2019 BE Presentation [Compatibility Mode]
18/48
Temperature and deflection curves for reinforced concrete beams.Temperature and deflection curves for reinforced concrete beams.Temperature and deflection curves for reinforced concrete beams.Temperature and deflection curves for reinforced concrete beams.Temperature and deflection curves for reinforced concrete beams.Temperature and deflection curves for reinforced concrete beams.Temperature and deflection curves for reinforced concrete beams.Temperature and deflection curves for reinforced concrete beams.
-
8/2/2019 BE Presentation [Compatibility Mode]
19/48
Strength reduction factor for concrete and steelStrength reduction factor for concrete and steelStrength reduction factor for concrete and steelStrength reduction factor for concrete and steelStrength reduction factor for concrete and steelStrength reduction factor for concrete and steelStrength reduction factor for concrete and steelStrength reduction factor for concrete and steel
C
-
8/2/2019 BE Presentation [Compatibility Mode]
20/48
BS timeBS timeBS timeBS timeBS timeBS timeBS timeBS time--------temperature curvetemperature curvetemperature curvetemperature curvetemperature curvetemperature curvetemperature curvetemperature curve
-
8/2/2019 BE Presentation [Compatibility Mode]
21/48
Material Examples & condition Temperature
Polystyrene Curtain hooks; radio casesmelts or flows 121 C
Lead Plumbing lead; storage
batteries with edges
rounded or drops formed
300 to 350 C
Zinc Plumbing fixtures;
galvanized surfaces with
drops formed
400 C
um num ma mac ne par s;
brackets; toilet fixtures;cooking utensils with drops
formed
650 C
Molded glass Glass blocks; jars &
bottles; solid ornaments
softened or rounded
Glass blocks; jars &
bottles; solid ornaments
thoroughly flowed
700 to 750 C
800 C
-
8/2/2019 BE Presentation [Compatibility Mode]
22/48
MaterialMaterial Examples & condition Examples & condition Temperature Temperature
Sheet glassSheet glass Softened or rounded WindowSoftened or rounded Window
glass; plate glass; reinforcedglass; plate glass; reinforcedglassglass
Thoroughly flowed WindowThoroughly flowed Window
glass; plate glass; reinforcedglass; plate glass; reinforced
glassglass
700 to 800700 to 800
850850 CC
SilverSilver Rounded edges or dropRounded edges or drop
formed on Jewelry; coins;formed on Jewelry; coins; 950950 CC
BrassBrass Knobs; locks; lamp fixturesKnobs; locks; lamp fixtureswith rounded edges or dropswith rounded edges or drops
formedformed900 to 1000900 to 1000 CC
BronzeBronze Rounded edges or dropsRounded edges or drops
formed on art objectsformed on art objects10001000 CC
CopperCopper Rounded edges or dropsRounded edges or drops
formed on electrical wiringformed on electrical wiring 11001100 CC
Cast ironCast iron Drops formed on pipes;Drops formed on pipes;
radiators; machine pedestalsradiators; machine pedestalsand housingsand housings 1100 to 12001100 to 1200 CC
-
8/2/2019 BE Presentation [Compatibility Mode]
23/48
Post Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment Model
stst
-
8/2/2019 BE Presentation [Compatibility Mode]
24/48
The 1The 1The 1The 1The 1The 1The 1The 1stststststststst
Tier Survey PerformaTier Survey PerformaTier Survey PerformaTier Survey PerformaTier Survey PerformaTier Survey PerformaTier Survey PerformaTier Survey Performa The aim is to achieve an approximate temperatureThe aim is to achieve an approximate temperature
range achieved during the fire to assess the severity ofrange achieved during the fire to assess the severity ofthe damages in the structurethe damages in the structure
Based on the physical aspects of deterioration ofBased on the physical aspects of deterioration of
architectural and structural elementsarchitectural and structural elements
Collect information related to the location, zoning,Collect information related to the location, zoning,
and the position of the building, which might be ofand the position of the building, which might be of
importance in evaluating the severity of the subjectimportance in evaluating the severity of the subject
-
8/2/2019 BE Presentation [Compatibility Mode]
25/48
The first page is providedThe first page is provided
for the surveyor to sketchfor the surveyor to sketcha plan, to mark thea plan, to mark the
effected structuraleffected structural
e e s e ee e s e e
affected area.affected area.
-
8/2/2019 BE Presentation [Compatibility Mode]
26/48
The first two pages and initial part of third page, of theThe first two pages and initial part of third page, of the
11stst Tier Survey Performa, allows the surveyor to collectTier Survey Performa, allows the surveyor to collect
the general information of the building, which maythe general information of the building, which may
come in handy for investigative purposes.come in handy for investigative purposes.
-
8/2/2019 BE Presentation [Compatibility Mode]
27/48
The later part of the 3The later part of the 3rdrd
page collects informationpage collects information
about the major damageabout the major damage
in the building andin the building andestimated area of damageestimated area of damage
in the compartment.in the compartment.
-
8/2/2019 BE Presentation [Compatibility Mode]
28/48
The 4The 4ththpage of thepage of the
Performa outlines thePerforma outlines the
observations in the fireobservations in the fire
,,
the fire origin, use ofthe fire origin, use ofcompartment and thecompartment and the
ventilation parameters.ventilation parameters.
-
8/2/2019 BE Presentation [Compatibility Mode]
29/48
The initial part of the 5The initial part of the 5thth
page describes thepage describes thephysical condition of thephysical condition of the
compartment after thecompartment after the
re, re err ng ere, re err ng e
damages to the structure.damages to the structure.
-
8/2/2019 BE Presentation [Compatibility Mode]
30/48
The later part of the 5The later part of the 5thth
page and the 6page and the 6thth
pagepagecollects information ofcollects information of
the affected minor itemsthe affected minor items
n e room presen ,n e room presen ,
which would bewhich would be
beneficial in estimatingbeneficial in estimating
the temperature in thethe temperature in the
compartment.compartment.
-
8/2/2019 BE Presentation [Compatibility Mode]
31/48
The 7The 7thth, 8, 8thth and 9and 9ththpagepage
contains data for thecontains data for thestructural membersstructural members
present, to assess thepresent, to assess the
sever y o e amage nsever y o e amage n
these members, to obtainthese members, to obtain
a decision of the level ofa decision of the level of
repairs required for therepairs required for the
members.members.
-
8/2/2019 BE Presentation [Compatibility Mode]
32/48
Post Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment Model
ndnd
-
8/2/2019 BE Presentation [Compatibility Mode]
33/48
The 2The 2ndnd Tier surveyTier surveyperforma is based onperforma is based on
interviewing theinterviewing the
witnesses and referringwitnesses and referringthe specifications.the specifications.
These ma rovideThese ma rovide
approximate evaluationapproximate evaluationof the damage after theof the damage after the
fire, when compared tofire, when compared to
the initial conditions.the initial conditions.
-
8/2/2019 BE Presentation [Compatibility Mode]
34/48
Post Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment Model
-
8/2/2019 BE Presentation [Compatibility Mode]
35/48
The Assessment ModelThe Assessment ModelThe Assessment ModelThe Assessment ModelThe Assessment ModelThe Assessment ModelThe Assessment ModelThe Assessment Model The purpose of the model would be to estimate anThe purpose of the model would be to estimate an
approx temperature range in the compartment.approx temperature range in the compartment.
, ,, ,
from the standard fire testing curves, so that thefrom the standard fire testing curves, so that the
approximate residual capacity could be assessedapproximate residual capacity could be assessed
And then use the above information in accordanceAnd then use the above information in accordance
with the observed severity of the structure to suggestwith the observed severity of the structure to suggest
the rating of repairs for the structural componentthe rating of repairs for the structural component
-
8/2/2019 BE Presentation [Compatibility Mode]
36/48
The Assessment ModelThe Assessment ModelThe Assessment ModelThe Assessment ModelThe Assessment ModelThe Assessment ModelThe Assessment ModelThe Assessment Model The model has been designed using Microsoft VisualThe model has been designed using Microsoft Visual
Basic 6.0, as the front end, and Microsoft Access asBasic 6.0, as the front end, and Microsoft Access asthe backendthe backend
The software provides a database, which saves all theThe software provides a database, which saves all the
entries made, to maintain a record.entries made, to maintain a record.
There is space provided to hook up furtherThere is space provided to hook up further
enchancements, that would further refine theenchancements, that would further refine the
software.software.
-
8/2/2019 BE Presentation [Compatibility Mode]
37/48
The menu is the first startupThe menu is the first startupform that appears after theform that appears after the
validation of the passwordvalidation of the password
It provides an enhancementIt provides an enhancementto access previouslyto access previously
assessed records.assessed records.
On starting a newOn starting a newassessment project, a dialogassessment project, a dialog
box appears, providing abox appears, providing a
link to input the datalink to input the dataobtained from the surveyobtained from the survey
performas.performas.
-
8/2/2019 BE Presentation [Compatibility Mode]
38/48
The 1The 1stst tier surveytier survey
requires the number ofrequires the number ofstructural members,structural members,
affected by the fire.affected by the fire.
After this the 1After this the 1stst tiertiersurvey form appears, sosurvey form appears, so
that data from thethat data from the
Performa could be fed.Performa could be fed. The information from theThe information from the
form is categorized here,form is categorized here,
so that it would be easyso that it would be easyto access it onto access it on
requirement.requirement.
-
8/2/2019 BE Presentation [Compatibility Mode]
39/48
-
8/2/2019 BE Presentation [Compatibility Mode]
40/48
Once the 1Once the 1stst tier surveytier survey
form is filled out, the 1form is filled out, the 1stst
tier option is disabledtier option is disabled
and the analysis can beand the analysis can be
..
The 2The 2ndnd tier survey formtier survey form
is an optional form, tois an optional form, to
further refine thefurther refine the
assessment.assessment.
-
8/2/2019 BE Presentation [Compatibility Mode]
41/48
The analysis is presented in a form, showing theThe analysis is presented in a form, showing the
mean temperature assessment of the compartmentmean temperature assessment of the compartmentand the structural components, along with theand the structural components, along with the
rating of repairs.rating of repairs.
-
8/2/2019 BE Presentation [Compatibility Mode]
42/48
Post Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment ModelPost Fire Assessment Model
through an Assumed Scenariothrough an Assumed Scenario
-
8/2/2019 BE Presentation [Compatibility Mode]
43/48
The Assumed ScenarioThe Assumed ScenarioThe Assumed ScenarioThe Assumed ScenarioThe Assumed ScenarioThe Assumed ScenarioThe Assumed ScenarioThe Assumed Scenario The scenario proposes a fire in an officeThe scenario proposes a fire in an office
compartment, located in the new academic blockcompartment, located in the new academic block
,,
short circuit.short circuit.
On interviewing the witnesses, it was found that theOn interviewing the witnesses, it was found that the
fire had lasted for about 75 mins. Due tofire had lasted for about 75 mins. Due to
unavailability of fire fighting equipment, fire wasunavailability of fire fighting equipment, fire was
extinguished by water.extinguished by water.
-
8/2/2019 BE Presentation [Compatibility Mode]
44/48
-
8/2/2019 BE Presentation [Compatibility Mode]
45/48
-
8/2/2019 BE Presentation [Compatibility Mode]
46/48
-
8/2/2019 BE Presentation [Compatibility Mode]
47/48
-
8/2/2019 BE Presentation [Compatibility Mode]
48/48