cope tues 3pm ligurian i.pdf
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TheImpactofWindonRoofsRAACatModelingConference
Feb1013 2014
Dr.
Anne
Cope
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n spee s were no a g n s u y areas:
Gustav - 70 to 80 mph gusts
Ike - 75 to 90 mph gusts
HurricaneIke
(2008)
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Failures tended to occur inall areas of roof not just
o e requremen s or
rated products or just the
may be reducing damage
cant reall tell et. HurricaneIke(2008)
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InsuranceInstituteforBusiness&HomeSafety
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omponen es ngo ng es
ASTMstandardizedtestmethods
Observeddeflectionofshingles
Relativeperformance
comparison
for
off
the
shelf
pro ucts
WholeRoofTesting
Measurewind
loads
for
6on
12
and
4on
12
pitch
Developtimehistoryinformation
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WindUpliftResistance&Agingof
AsphaltShingles
PostEvent
Assessments
AgingFarm
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2013:Establish
relationship
withasphaltshingle
Relativeperformanceof
3tab
shin les
6on12wholerooftesting
Bu
aroo
farmforaging
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2014
Relativeperformance
of
architecturalshingles
on w o eroo test ng
Compareloadingeffects:realistic
wind
loads
in
test
chambervs.standardtests
Enlargeagingfarm
sta s
ns tu
test ng
capabilityandconductfieldstudies
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2015andbe ond:Establish
design
requirementsforshingles
eve opnews mp e es s
Statisticalmodelofshingleresistance
using:
Resultsfromcomponenttests(COMET)
Agingfarmresults
Posteventdamageassessments
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Problemsgettingshinglestoseal
Effectsofhandlingandg
Difficulttoachieverobust
Evenat155160F,physicalobstaclesremained
Whensealedwell,many3tabproductsstayedoninwinds>120mphfor2hours
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SealingofShingles
Observations&
Takeaways
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SealingofShingles
Observations&
Takeaways
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Cohesivefailures
withintheshingleitself
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ResultstoDate:ASTMTestsvs.
6on
12
Whole
Roof
Uplift
Forces
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IBHS
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IBHS
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ResultstoDate:TestProtocol
Observations&
Takeaways
appears o eamoresevere
testof
shingles
than
ASTM
D
7158
(due
to
oa ura on
ASTM
D
3161
combines
both
load
and
resistance
assessmen so s ng es nas ng e es = r.
durationofsteadywinds
intotwopartsandresistanceismeasured
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ResultstoDate:TestProtocol
Observations&
Takeaways
Hypothesis:Thoughfullscaleshortduration
loadsmaybehigher,thedurationofloadin
ASTM3161maycompensate
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Option1:
validation
ofseal
p on : rea eroofasasystem,
resilientshingles
+
sealedroofdeck
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DisasterSafety.org
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