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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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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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