ML17321A098

Technical Note 80581, Thermo-Lag 330 Conformable Stress Skin 3 H Fire Wall Sys Application Procedures.

ML17321A098
Person / Time
Site:	Cook
Issue date:	02/28/1982
From:	TSI, INC.
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ML17321A099	List: ML17321A098 ML17321A100 ML17334A528
References
80581, NUDOCS 8406210367
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TSgTECHNICAL NOTE80581THERMO-TAG 330CONFORK4BLE STRESSSKINTHREEHOURPIREWALLSYSTEMAPPLICATION PROCEDURES FEBRUARY198284062i0367 8406j5PDRADQCK050003i5FPDRt)THERMALSCIENCE,INC.~3260BRANNONAVE.~ST.LOUIS,MO63139~(314)352-8422Telex:Domestic44-2384~Overseos209901~Telecopier (314)352-5626 II TSXTECHNICAL NOTE80581T)KRHO-LAG 330CONFORMABLE STRESSSKINTHREEHOURFIREMQLSYSTEMAPPLICATION PROCEDURES FEBRUARY1982le0INTRODUCTION Thisprocedure setsforththesequential stepsinvolvedinapplyingtheTHERMO-LAG 330Conformable StressSkinThreeHourPireVa11SystemtofirevallsTheTliERMO-LAG 330Conformable StressSkinThreeHourPireMallSystemconsistsofTHElNO-LAG 330-1Subliming Coating,THERM-LAG StressSkinType330-69aadTHZ1QC-LAG 351SeriesPrimer.2.0PRE-APPLICATION PRACTICES'.1 alification ofContractor Theapplication shallbeperformed byaqualified contractor vhohashadpriortraininginapplyingthematerials andwhohastheequipment requiredtoperformtheapplication.

2.2SafetPrecautions 3Thecontractor shallfollovstaadardindustrial safetypractices.

established forthehandlingofchemicalcoatingsaadshallconformto'applicable OSHAandovaersafetyrulesinallrespects.'Delive Thecoatingmaterials shallbedelivered totheJobsiteinoriginally sealedcontainers vhichsbovtheproductname,batchorlotnumber,color,nameofthemanufacturer andtheexpiration date.

2.4~Storae'hecoatingmaterials shallbestoredoffthegroundwhennotinuseinanareaprovidedforthatpurpose.Thematerials instorageshallbeprotected againstfreezingandfromt'emperatures above100'F.2.5TemeratureandPreciitationThecoatingmaterials shallbeappliedonlytodrysurfaces.

Thetemperature ofthecoatingmaterialandsurfacestobecoatedshallbeabove40'Fduringthematerialapplication andcuringperiods.Thecontractor shallfurnishandinstallanyprotective coversrequiredtoprotectthenewlyappliedcoatingfromrainfall, hardfreezeorcontaminants duringitsinitialcuringperiod2.6Protection ofAdscentSurfacesemati1sdri30EXPANDEDMETALOROTHERSTEELSUPPORTMATERIALSURFACEPREPARATION Thecontractor shallmaksofforotherwise protection alladjacentareasand"inplaceequipmeat" fromreceiving aaymaterialoverspray duringthecoatingapplication.

Anyspilledmaterialandoverspray shal1beremovedpromptlyusing~~terwetragsorspongesbefore.therahaed3.1Prepare'the surfaceonbothsidesoftheexpandedmeta1orothersteelsupportmateriaLforapplication oftheTHERMO-LAG 351Primerbyremovinganydirt,scale,rustorothercontamiaants.

Neverapplytheprimerdirectlyover'anybardor'lossypaintedsurfaceswithoutroughening thesurfaceinaccordance withstandardpaintingpractices.

342P~esurethatthesurfacesonbothsidesofthecleanedexpandedmetalorothersteelsupportmaterialarecompatible withtheTHER-'%-LAG 330-1Subliming CoatingbymakingcrosshatchadhesiontestsAD~ysapplyabarriercoatofTHERMO-LAG 351Primeroversteelsurfaceswhichhavebeenpreviously primedwithazincbasedprimer-Alldoubtfull paintedsurfacesshouldberemovedusingmechanical metho'ds, ApplytheTHERM)-LAG 351Primertobothsidesoftheproperlypreparedexpandedmetalorothersteelsupportmaterialusingsprayequipment orarollerTheminimumacceptable dryprimerthickness shallbe0.002inches,whichisnormallyachievedbyapplyingataspreadrateofcirca200sq.ft.pergallon.

3.3Measureprimerthickness usinganapproveddirectreadiaggauge,3.4Makecrosshatchadhesiontests,asperFederalStandard141a,ontheprimedsurfaceoneachsideoftheexpandedmetalorothersteelsuppor'tmaterialtoassureproperadhesioabetveentheprimeraad~thesteelsurfaceexists-priortoproceeding withtheapplication oftheTREZHO-LAG 330-1Sub1imiag Coating.3.5Makeatleastonecrosshatchadhesionteatevery100aqaurefeetofprimedsteelsurfacearea.Anyprimedsurfaceareavhichfailsthecrosshatchadhesiontestshallberemovedusing.mechanical cleaningmethodsaadshallbereprimedwithTHERMD-LAG 351Primer~3.6Surfacesarereadytoreceivetheapplication oftheTHERMO-LAG 330-1Subliming Coatingaftersuccessful crosshatchadhesiontestshavebeenestablished.

40'PPLICATION OFTHERHD-LAG 330-1SUBLIMING COATINGANDTHERMO-LAG STRESSSKINTXPE330-69/4.1Coatbothprimedsidesoftheexpandedmetalorothersteelsupport.materialwithTHHRO-LAG 330-1Subliming Coating.Useabsorbent materialsuchasplyvoodorparticleboardasabackingfortheexpandedmetalwhensprayiagthefirstsideoftheexpandedmetal.Thecoatingshallbeappliedinaccordance withinstructions givenin,Section4.0,Paragraph 4.1.1through4.1.6ofTSI'sTechnical Note80181-RevisionII-datedDecember1981~shownhereinasAppeadixA,4.2ApplyTHE/QQ-LAG StressSkinType330-69tothevetsurfacesoneachsideafterthefinalpassandusearollertoflattenoutanywrinklesandtoembedtheStressSkinsecurely.

Thenapplysufficieat THHQQ-LAG 330-1.Subliming CoatingtocovertheembeddedTHERHO-LAG StressSkinORRKNCOATINGPRIORTO?QUNTING4;3Cutfour.identical sectionsofTH1UQX)-LAG StressSkinlargeenoughtocompriseaportionofthefirewall4.4CoattwosectionsoftheTHERM)-LAG StressSkiavithTHERM-LAG 330-1Subliming Coating.Thecoatingshallbeappliedi'naccordance withinstructions giveninSection4.0,Paragraph 4.1.1through4.1.6ofTSI'sTechnical Note80181-RevisionII-datedDecember1981,shcr~hereinasAppendixh.

4.5Applyapeofthepreviously cutsectionsofStressSkintoeachofthetwocoatedsectionsafterthefirstpasswithTHERM-LAG 330-1Subliadng Coating.UsearollertoflattenoutanywrinklesandtoembedtheStressSkinsecurely.

4.6MountthetwosectionsofcoatedStressSkiaontheexpandedmetalorothersteelsupportmaterialusing410bolts,washersandnuts.Theholesandcounterbore forthe410boltassemblies aretobedrilledon12inchcenterswiththetwocoatedsectionsbeingheldinplace.4.7Applysufficient amountsofTHERHO-LAG 330-1Subliming Coatingtofillthecounterbore holesandtocovertheembeddedStressSkin.ORASANACCEPTABLE OPTION4.84.9Cutfouridentical sectionsofStressSkintogetherwithanidentical sectionofexpandedmetallargeenoughtomountoatheinstalled rectangular steeltubingorotherstructural steelentities.

FastenonesectionofStressSkintoeachsideoftheexpandedmetalsectionusingmechanical fasteners.

~4.10CoatbothattachedStressSkinsectionswithTHERMO-LAG 330-1Subliming Coating.Thecoatingshallbeappliediaaccordance withinstructions giveainSection4.0,Paragraph 4.1.1through4.1.6ofTSIsTechnical Rote80181-RevisionII,datedDecember1981andIshownhereinasAppendixh4.11Applyoneofthepreviously cutsectionsofStressSkintoeachofthetwocoatedsectionsafterthefinalpassofTHERMO-LAG 330-1Subliming Coating.UsearollertoflattenoutanywrinklesandtoembedtheStressSkinsecurely4.12Mountthecoatedsectionontherectangular steeltubingorotherstructural steelentitiesusiaglongbolts,wasbersandnuts.Applysufficient amountsofTHERMO-LAG 330-1Sub1iming Coatingtocoverthe.boltbeadsandtherectangular steeltubingorotherstructural steelentities

5.0 POSTAPPLICATION

PRACTICES f5.1hcleanandorderlycondition shallbemaintained intheapplication area.Following theapplication, alloverspray, debrisandequipment shallberemovedandthearealeftinacondition acceptable totheewer.6.0EUIPMENTSUGGESTIONS 6.1Themosteconomical andsatisfactory methodofapplyingTHERMO-LAC 330-1Sub1iming Y~terialisbyeitherairlessorairtypesprayequipment 6.2Suggested complement ofsprayequipment forbothtypesareshowninAppendixBtothisprocedure 6.3kschematic ofSuggested Penetraing Y~asuring DevicesisshowninAppendixCtothisprocedure APPENDIXhTSI'STECHNICAL NOTE80181-REVISIONIl-DATEDDECEHBER1981ISECTION40COATINGAPPLICATION TECHNIQUES

4.0 COATINGAPPLICATION

TECHNTUES80581-iri3-1.AG 330CONiiSTRESSSKINTHREEHOURFIREVA1.1.SYSTEM-FEBRUARY39824.1Srahlication4.1.1ApplytheTHERHO-LhC 330-1Subliming Coatingoveraproperlypreparedsurface.Makesurethatthesurfacetobecoatedisclean,dry,above40'Fandfreefromscale,rustorothercontaminants.

4.1.3UApplythematerialinasmanypassesasrequiredtoprovidetherequiredFilmbuildofthecoatingthickness, takingcaretoavoidslumpingorsaggingofthecoating.Normally, arequired0.500inchdrycoatingthickness isaccomplished byapplyingthreewetcoatsof0.225inches.Bowever,thethickness vhichcanbesafelyappliedinasinglepassvi11.depend onthetemperature, humidityandotherfactorsthatarebestdetermined onthegobsiteh1thematerialinsmoothevenpasses,takingcaretokeepthesprayppygunfanpaternata90'nglewheneverpossible.

Reachingwithaspraygunvillcausethespraypatterntovaryfromthe90angleandvillresultinaroughersurfacethannorma3.~4.1.4I'akefrequentwetthickness measurements duringtheapplication usingapenetration measuring devicesuchasshowninAppendshtoensurethatthecoatingisbeingapplieduniformly andat'therequiredvetfilmthickness Thesevetthickness checkssha11bemadeeveryfivesquarefeetoreverytworunningfeetofcoatedsurfacearea.(hote:%hentakingmeasurements allerforashrinkage rateofcirca25Xbetweenthevetandthedesireddryfilmcoatingthickness.)

Removeexcessbuildupofcoatingmaterialatedgesandpointsbybrushingorrollingthesurfacevithadampspongeroller.Sredgesofthesubstrate fromeachsidetocausethematerialtoedwraparoundtheedge.Iftheedgecoatingisnotcompleted closeuseawetrollerortroweltosealtheedgesurface4.1.7.Ap1Fiberglass'rmoring tothewetsurfaceafterthefinal'as's

'andpyusearollertoflattenoutanywrinklesandtoembedthefiberglass securely~

Ihenapplysufficient materialtocovertheembeddedfiberglass 4.1-8Removeallruns,sage,dripsorothersurfaceimperfections beforethematerialcuresusingwetspongerollers,brushesorhandtrowels.Ri.VISION II

A:E!iDIXATOTSlS80581-THERHO-LAG 330CONFORyhSI, STRESSSKINTHREEHOURFIREMALLSYSTEM-FEBRUARY19824.2.1HandhlicationrTrovelthematerialtoauniformthickness usingmoderatepressureandavoidovervorking.

Thetrovelshouldbevettedvithvatervhenasmoothfinishisrequired.

4.2.2Glovethematerialtocablesandsmallpipesusingstandardvorkgloves.Porksmallareasandkeeptheglovesvettoinsurearelatively uniformthIckness.

4.3DFilmThickness

?feasuremeats 4.3.1Takedryfilmthickness measurements aftertheappliedmaterialhascuredMeasuremeats shallbemadeusingelectrical, peaetratiag ormagneticmeasuring Instruments, 4,4ReairProcedures

-D~e4.4.1RemoveddamagedandloosematerialusingaknifeandscrapperCutbackuntilsoundadheringmaterial.

isreached4.4-2TheedgeshouldbeundercuttoformabevelededgeasXnplasterrepair4.4.3Removeallforeignmatterfromthesubstrate usingavirebrush.4.4.4.,SprayortrovelTHERM-LAG 330-1ontopatch'area.

Severalcoatsofthematerialcanbeappliedtoachievethede'siredfilmthickness..

Besuretoallovfor'shrinkage ofrepairpatchbybuildingupaslightdomeshapeviththepatch.REVISIONII 9.0DIRECTSPRAYOVEREXPANDEDMETALTHREEHOURFIREWALLDESIGNInstallation oftheDirectSprayoverStressSkinThreeHourDesigntoformaFireWallinvolvescoatingbothsidesoftheexpandedmetalorothersteelsupportmaterialwithTHERMO-LAG 330-1Subliming Material-SprayGrade,andthenapplyingTHERMO-LAG Str'essSkinType330-69tothewetsurfacesoneachside.Thesequential stepsinvolvedininstalling thisfirebarrierdesignonthefire,wallsupportmaterialaredescribed inthefollowing paragraphs.

9.1Installation ofThreeHourFireBarrierDesin9.1.1Attachtheexpandedmetaltothestructural steelframinginthosecaseswhereexpandedmetalis'required.

9.1.2Preparethesurfaceonbothsidesoftheexpandedmetalorothersteelsupportmaterialforapplication oftheTHERMO-LAG, 351-2Primerbyremovinganydirt,scale,rustorothercontaminants.

Neverapplytheprimerdirectlyoveranyhardorglossypaintedsurfaceswithoutroughening thesurfaceinaccordance withstandardpaintingpractices.

9.13ApplytheTHERMO-LAG 351-2Primertobothsidesoftheproperlypreparedexpandedmetalorothersteelsupportmaterialusingsprayequipment oraroller.ThePrimershallbeappliedinaccordance withinstructions giveninParagraph 12.0herein.9.1.4CoatbothprimedsidesoftheexpandedmetalorothersteelsupportmaterialwithTHERMO-LAG 330-1Subliming Material-SprayGrade.Thecoatingshallbeappliedinaccordance withinstructions giveninParagraph 12.0herein.ApplyTHERMO-LAG StressSkinType330-69tothewetsurfacesoneachsideafterthefinalpassandusearollertoflattenoutanywrinklesandtoembedtheStressSkinsecurely.

Thenapplysufficient

~THERMO-LAG 330-1Subliming Material-SprayGrade,tocovertheembeddedTHERMO-LAG StressSkin.2-32 ORWHENCOATINGPRIORTOMOUNTING.9.1.5Cuttwoidentical sectionsofTHERMO-LAG StressSkinlargeenoughtocompriseaportionofthefirewall.CoattwosectionsoftheTHERMO-LAG StressSkinwithTHERMO-LAG 330-1Subliming Material-SprayGrade,intherequireddryfilmcoatingthickness of0.625"+/-0.125".Thematerialshallbeappliedinaccordance withinstruction giveninParagraph 12.0herein.9.1.7MountthetwosectionsofcoatedStressSkinontheexpandedmetalorothersteelsupportmaterialusingapproved810bolts,washersandnuts.Theholesandcounterbore fortheapproved810boltassemblies aretobedrilledon12inchcenterswiththetwocoatedsectionsbeingheldinplace.9.1.8Applysufficient amountsofTHERMO-LAG 330-1Subliming Material-SprayGrade,intherequireddryfilmthickness tofillthecounterbore holes.ORASANACCEPTABLE OPTION9.1.'9Cuttwoidentical sectionsofStressSkintogetherwithanidentical sectionofexpandedmetallargeenoughtomountontheinstalled rectangular steeltubingorotherstructural steelentities.

9.1.10Coatingtheexpandedmetalwithadryfilmthickness of0.625"+/-0.125"oftheTHERMO-LAG 330-1Subliming Material-SprayGrade.Thecoatingshallbeappliedinaccordance withinstructions giveninParagraph 12.0herein.2-33 9.1.1Applyoneofthepreviously cutsectionsofStressSkintoeachofthetwocoatedsectionsafterthefinalpass'ofTHERMO-LAG 330-1Subliming Material-SprayGrade.UsearollertoflattenoutanywrinklesandtoembedtheStressSkinsecurely.

!I'.1.2:Mountthecoatedsectionontherectangular steeltubingorotherstructural steelentityusingapprovedlongbolts,washersandnuts.9.1.3Applysufficient amountsoftheTHERMO-LAG 330-1Subliming Material-SprayGradetocovertheboltheads.

12.0COATINGAPPLICATION TECHNIVES12.1THERMO-LAG 351PrimerAlication12.1.1Preparethesurfaceofthesteelentityforapplication oftheTHERMO-LAG 351TypePrimerbyremovinganydirt,scale,rustorothercontaminants.

Neverapplytheprimerdirectlyoveranyhardorglossypaintedsurfacewithoutroughening thesurfaceinaccordance withstandardpaintingpractices.

12.1.2Makesurethatthecleanedsteelsuraceiscompatible withtheTHERMO-LAG 330-1Subliming Materialbymakingcrosshatchadhesiontestsasfollows:.CrossHatchAdhesionTest.Theprimeriscutoveranareaapproximately 4"by4"inasquarematrix,eachsquarebeingapproximately 1/2"by1/2".Ahighqualitytapeis'applieddiagonally.to thesquare.Uponcompletion ofthetapeapplication, itisrubbedin~firmlytoassuregoodadhesion.

Withonecompleteperkingmotion,thetapeisremoved.Ifmorethan3percentofthePrimerisremovedfromthesurface,theapplication isfaulty.Thistestshouldbeperformed inareaswhicharedeemedcriticalandinasmanyplacesasrequiredbythespecification.

Uponcompletion oftheCrossHatchAdhesionTest,thetestareasshouldbeagainwiththeTHERMO-LAG 351-2Primerbyeitherbrushingorlightspray.r2-43

AlwaysapplyabarriercoatofTHERMO-LAG 351TypePrimeroversteelsurfaceswhichhavebeenpreviously primedwithazincbasedprimer.Alldoubtfulsurfacesshouldberemovedusingmechanical cleaningmethods.12.1.3ApplythePrimertotheproperlypreparedsteelsurfaceinonecontinuous coatusingsprayequipment oraroller.Theminimumacceptable dryprimerthickness shouldbe0.002incheswhichisnormallyachievedbyapplyingataspreadrateofcirca200sq.ft.pergallon.12.1.4MeasurePrimerthickness usinganapprovedmagneticdirectreadinggauge.12.1.5Makecrosshatchadhesiontestsontheprimedsurfacetoassure~properadhesionbetweentheprimerandthesurfaceofthesteelitempriortoproceeding withtheapplication oftheTHERMO-LAG 330-1Subliming Material.

12.1.5CoattheprimedsteelsurfaceareawiththeTHERMO-LAG 330-1Subliming Material.

Thecoatingshallbeappliedinaccordance withinstructions giveninParagraph 12.2or12.3herein.12.2THERMO-LAG 330-1SubliminMaterial-SraAlication12.2.1ApplytheTHERMO-LAG 330-1Subliming Material-SprayGradeoveraproperlypreparedsurface.Makesurethatthesurfacetobecoatedisclean,dry,above40Fandfreefromscale,rustorothercontaminants.

12.2.2Applythematerialinasmanypassesasrequiredtoprovidetherequireddryfilmbuildof'hecoatingthickness, takingcaretoavoidslumpingorsaggingofthecoating.Normally, arequired0.500inchdryfilmcoatingthickness isaccomplished byapplyingthreewetcoatsof0.255inches.However,thethickness whichcanbesafelyappliedinasinglepasswilldependonthetemperature, humidityandotherfactorsthatare.bestdetermined.

onthejobsite.12.'2.3Applythematerialinsmoothevenpasses,takingcaretokeepthespraygunfanpatternata90degreeanglewheneverpossible.

Reachingwithaspraygunwillcausethespraypatterntovaryfromthe90degreeangleandwillresultinaroughersurfacethannormal.2-44

12.2.4Takefrequent, wetthickness measurements duringtheapplication usingapenetration measuring deviceasshowninFigure15toensurethatthecoatingisbeingapplieduniformly andattherequiredwetfilmthickness.

Thesewetthickness checksshallbemadeeveryfive(5)squarefeetoreverytwo(2)runningfeetofcoatedsurfacearea.(Note:Whentakingmeasurements, allowforashrinkage rateofcirca25Xbetweenthewetandthedesireddryfilmcoatingthickness.)

12.2.5Removeexcessbuildupofcoatingmaterialatedgesandjointsbybrushingorrollingthesurfacewithadampspongeroller.12.2.6Sprayedgesofthesubstrate fromeachside'ocausethematerialtowraparoundtheedge.Iftheedgecoatingisnotcompletely closed,useawetrollerortroweltosealtheedgesurface.12.2.7Removeallruns,sags,dripsorothersurfaceimperfections beforethematerialcures,usingwetspongerollers,brushesorhandtrowels.12.3THERMO-LAG 330-1SubliminMaterialTrowelAlication12.3.1Trowelthematerialtoauniformthickness usingmoderatepressureandavoidoverworking.

Thetrowelshouldbewettedwithwaterwhenasmoothfinishisrequired.

12.4'.DrFilmThickness Measurements 12.4.1Takedryfilmthickness measurements aftertheappliedmaterialhascured.Measurement shallbemadeusingelectrical, penetrating ormagneticmeasuring instruments.

2-45 l3.0REPAIRPROCEDURES TherepairofadamagedsectioninaTHERMO-LAG 330FireBarrieriseasilyaccomplished bycuttingoutandremovingthedamagedmaterialandthenfillinginthecutoutsectionwithnewmaterial.

Thefirststepinthisprocedures istoremovethedamagedandloosematerialusingaknifeandscraper.Careshouldbeexercised thatthedamagedmaterialiscutbackuntilsoundadheringmaterialisreached.Thenextstepistoundercuttheedgesaroundthecutoutsectiontoformabevelededge.Allforeignmatteristhenremovedfromtheexposedsubstrate surfaceinthecutoutsection.Finally,theTHERMO-LAG 330Subliming Materialissprayedortroweledintothecutoutsection.Ifnecessary, severalcoatscanbeappliedtoachievethedesiredfilmthickness.

Careshouldbetakentoallowforshrinkage oftherepairpatchbybuildingupaslightdomeshapeonthesurfaceofthepatch.2-47 APPENDIXISDGCESTED COMPLE262Z OFREQUIREDSPRAYEQV~XFORTEER.'0-LAC 330-1SUBLIMNCCOATINCAPPLXCATIOH hX3GZSSSPRATEQVXPHEHT

~AVTIIT1Each1Each1Each1Each2Each1Each1Eh1Each1Each1EachfEach'6EachDESCRIPTION OPKUXPMENT@draSpray~45:1hirPoveredEaaHydraisticSprayCuaSpecial~ValveRAGIllvith0.55TipsAirAgitatorAirEeguIator KitAirRegulator OnlyvfthCaugcAirLineFilterAirLineLubricator

~RepairPartsKataExtraTipsvithSeaIs100Feet75Feet25Feet1inch1/2inch3/ercI.DKiPressureFluidBoseI.DHiPressureFluidHoseX.D.HiPressureFluidBose APPENDIXI(COmINUED)

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KFi'jIIISI.0 IQS~/J/pgyl/rrrr February3,1984AmericanElectricPowerI/1Riverside PlazaP.0.Box16631Columbus, Ohio43216-6631 Attention:

Mr.VicDelFavio

Subject:

HatchCoverRequirements ForTHERMO-LAG 330FireBarrierSystemFor3Hour'sProtection FromAnASTME119TypeFireEnvironment RE:1)Wesson&Associates Reportentitled"Effectiveness ofFireResistant CoatingsAppliedtoStructural SteelsExposedTo,DirectFlamesContact,RadiantHeatFluxes,andMechanical andCryogenic ThermalShock"2)Underwriter's Laboratoried ReportNo.R6802-6A, FileNo.X611"MasticCoatingAppliedToAW14X228SteelColumn"

DearMr.DelFavio:

Werecommend thataminimumthickness of0.5inchesdryofTHERMO-LAG 330-1Subliming Materialbeusedonbothsidesofthiscovertolimitthemaximumtermperature riseofthe'steelto1000FwhenexposedtoanincipentASTME1190typefireenvironment.

Ifdirectspraymethodsareemployed, pleaseusetheprocedures contained inTSI'sTechnical Note80181entitled:

"THERMO-LAG 330Subliming FireBarrierSystemsApplication Procedures",

RevisionIV,datedJune1983.Thisminimumthickness recommendation canalsobeprovidedbytheuseofTHERMO-LAG Prefabricated Panelsina3hourfirerateddesign.Ifyouhaveanyquestions, donothesitatetocontactme.Yourstruly,R.A.Lohman-Manager-Quality Assurance RAL/mlsTHERMALSCIENCE,INC.~3260BRANNONAVE.~ST.LOUIS,MO63139~(314)352-8422Telex:Domestic44-2384~Overseas209901~Telecopier (314)352-5626 UNDERWRITERS LABORATORIES INC.333PflhCFEEh ROADNORTIIIIROOK.II.Ul'Olc tKO62anindependent, not;for-p~

oj7torganization testingforpublicsafetyR6802Northbrook, ILJanuary9,1979TSI,Inc.3260BrannonAve.St.Louis,NO63139Attention:

R.Feldman

Subject:

MASTICCOATINGS(CDWZ)Gentlemen:

Weareenclosing onecopyoftheReportrevisioncoveringtheabovesubject.Therevisionconsistsofthefollowing:

Revisedillustration,6 forreportissued6-5-78,dated1-8-79.Verytrulyyours,4.8.Pd'.D.PalikijFireProtection Dept.GP:pgencl.

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~~~Wn%II~0.493-1/2in.~Y=0.000471X1.32~~~TmNNLLJI--qIe~'>>tt'~a~I~l~<<I025LLJ1~~!!l0.1-~I~~~~>t~~~~>>.IIJtiIeJt~~~~~~I~\+I~$~>>>Iati>talli<<IIi~~J,I>>~<<<<~e~~~~~I~~lle~~Itl,~lt~~~I~~e~I:II't~'II~ete~~~te~~I~~t~~~\I~>~~I>I!lettl~~~I~'>I::I'IIij!Ie>e:li!I.I:lli~t~>>t~II~la)JI-'.~~::I:~~~~IJ"TM-]CATE'I>>JagI~a'~~~>-I'I'e~'~a,J'eeJt~I~I,i>e10100200I~eI~,'.I~'I.'0TIHE,HINUTESILL.6R6802.-6A UNDERWRITERS LABORATORIES INC.CHCACO~HORTHSROOK, ILLXKLVILLK.

KY~SA,hTAC'LARA.CAUF.anindependent, not-for-projit organuatimt testingforpuhhcsafetyFileR6802-6AProject77NK422June5,1978REPORTonMASTICCOATINGAPPLIEDTOAM14X228STEELCOLUMNTSI,Inc.St.Louis,MissouriCopyright C1978Underwriters1.aboratories Inc.Underwriters Laboratories Inc.authorizes theabovenamedcompanytoreproduce thisReportprovideditisreproduced initsentirety.

FileR6802-6APageG1Issued:6-5-78GENERALThesubjectofthisReportisthefireresistance Classification ofaW14X228steelcolumnprotected, withType330masticsubliming coatingappliedtoadryfilmthickness of15/32in.asdescribed inthesectionentitled"Protection ofTestAssembly,"

andasshowninILL.1.Theobject,ofthisinvestigation wastoestablish afireresistance Classification forthecolumndescribed hereinbymeansofafireendurance testconducted inaccordance withtheStandardforFireTestsofBuildingConstruction Materials, UL263(ASTME119,NFPANo.251).Inadditiontothefireendurance test,thesubmittor requested thatweconductanengineering evaluation ofthetestsdescribed inthisReportandtheircolumntestsdescribed inReportsR6802-3andR6802-4,todetermine theminimumdryfilmt,hickness oftheType330masticcoatingnecessary toafforda3hrfireresistance ratingwhenappliedtoaW14X228steelcolumn.Thefiretestwassupplemented byothertestsandexaminations tofurnishinformation regarding thecomposition andphysicalproperties ofthematerials usedandtodetermine thepracticability ofhandlingandapplyingthecoating.GDP/RMB:plh

,CeFileR6802-6APage1Issued:6-5-78DESCRIPTION EXAMINATION OFMATERIALS:

Thematerials usedinthetestassemblyaredescribed below.Column-ThecolumnusedinthetestassemblywasaM10X228steelsectionmeasuring8ft,3in.longbet.weenthetopandbottomconcretecaps.Primer-Theprimerwasacorrosion inhibiting modifiedalkydprimermanufactur edbyTSI,Inc.GlassFiberGauze-Theglassfibergauzewasembeddedinthemasticcoatingtoprovidereinforcement.

Thegauzewas12in.wideandweighed1.70ozpersqyd.MasticSubliminCoatin-Themasticsubliming coatingmaterialwasmanufactur edbyTSI,Inc.anddesignated ThermoLagType330.Thecoatingmaterialwassuppliedin55galsteeldrums.Themasticcoatingispresently Classified byUnderwriters Laboratories Inc.underFollow-Up Service.Thecomposition andotherpropeitiesofthemasticcoatingareconsidered proprietary andareonfileat,theLaboratories.

PROTECTION OFTESTASSEMBLY:

Thesteelcolumnwasprotected byworkmenintheemployofthesubmittor undertheobservation ofmembersoftheLaboratories'taff.

Thecolumnsurfaceswerewipedwithasolventtoremovesurfacecontaminates.

Theprimerwassprayedontothecolumnusinganairgun.7hemasticcoating,whichwassuppliedinsteeldrums,wasspray-applied tothecolumnsurfacesusingequipment designedforsuchpurposes.

FileR6802-6APage2Issued:6-5-78Themastscoatingwasappliedtothecolumninseveralcoatsatthicknesses ofapproximately 1/32to1/16in.Eachcoatwasallowedtobecometackybeforethefollowing coatwasapplied.Afterthecoatinghadbeensprayedtoanapproximate thickness of13/32in.,theglassfibergauzewaspressedintothecoatingovertheentirecolumnwithadjacentsectionsofthegauzeoverlapped 1to3in.Thegauzewaslightlyrolledwithapaintroller.Approximately 3/32in.ofadditional coatingwasthenappliedtothecolumn.Thecoatingwasappliedtoawet'ilmthickness ofapproximately 1/2in.asdetermined byseveralmeasurements takenaftersprayinghadbeencompleted.

Thewetanddrydensities ofthemasticsubliming coatingweredetermined byapplyingthematerialata'representative.

thickness toa2by2ftsteelplate.Thewetdensitywasobtainedbyweighingtheplateimmediately aftersprayingandthedrydensitywas.determined usingtheairdriedconstantweightofthesteelplateandcoating.Theaveragewetanddry'densities ofthemasticcoatingwere85.8and61.2pcf,respectively.

Whilethemasticcoatingmaterialwascuring,severalcrack'arying inwidthfromhairlineto1/8in.formedattheintersection ofwebsandflangesofthecolumn.Thesecrackswere~repairedninedaysafterthesprayinghadbeencompleted.

Thefinaldryfilmthickness of15/32in.wasdetermined onthebasisof108measurements takenonthecolumn40daysafterthesprayinghadbeencompleted andthematerialhaddriedatroomtemperature toaconstantweightcondition.

Individual thickness readingsvariedfrom11/32to19/32in.Theappearance ofthecolumnassemblybeforethefireendurance testisshownonILL.2.GDP/RMB:plh FileR6802-6APageTl-'1Issued:6-5-78TESTRECORDN01FIREENDURANCE TEST:Thistestwasconducted inaccordance withtheStandardofUnderwritersLaboratories Inc.forFire.TestsofBuildingConstruction andMaterials, UL263(NFPANo.251,ASTME119)-DESCRIPTION OFSAMPLE,Priorto-placingthecolumnassemblyinthefurance,severalcrackswereobservedinthemasticcoatingateachwebandflangeintersection.

Thesevariedinwidthfromhairlineto1/16in.andwere1to2in.long.METHODThecolumnwasplacedinthefurnaceandexposedtoflamesofcontrolled extentandseverityinaccordance withtheStandardTime-Temperature Curve.Eightthermocouples, distributed aroundthecolumnintwolevelsasshownonILL.3,measuredthetemperatures inthefurancechamber.Thetemperatures ofthesteelcolumnweremeasuredby14thermocouples locatedasshownonILL.4.Throughout thetest,observations wremadetonotethecharacter ofthefire,thecondition

.oftheexposedsurfaceofthecolumn,andallotherdatapertinent tothefireresistance performanceofthecolumn.Character andDistribution oftheFire-Thefurnacefirewasluminousandwelldistributed duringthetest,andthetemperatures recordedinthefurancechamberfollowedtheStandardTime-Temperature CurveasdefinedintheStandardforFireTestsofBuildingConstruction andMaterials, UL263,andasshownonILL.3.

FileR6802-6APageTl-2Issued:6-5-78Observations DurinTest-Thefollowing observations weremadeduringthefiretest.Allreferences todimensions areapproximate.

TestTime,MinObservations Themasticcoatingonthecolumnflangesis'urning blackanddeveloping blisters.

Thecolorofthemasticcoatingonthecolumnflangesisblack.Themasticcoatingonthecolumnwebisturningblackanddeveloping smallblisters...

'IThemasticcoatingisblackincolorandcontainsnumerousblistersovertheentirecolumn.Surfacecracksareformingaroundblisterslocatedonthecolumnflanges.Lightflamesareemittingfromthefissuresinthecoating.6.5Flaminghasstopped.Coatingisflamingagain.wide.Thecracksare1/8to1/4in.10'Themasticcoatingisbowingout1/8to1/4in.fromthecracks.Smallareasofthecoatingareturning.tanincolor.Themasticcoatingismostlytanincolor.The'coating continues toemitflames.Atriangular shapedareaofthemasticcoatingi'sdelaminating fromthenorthflange2ftbelowthecolumncap.'Theaffectedareameasures12in.inlength,:3to6in.wideand1/4in.thick.

FileR6802-6APageTl-3Issued:6-5-78TestTime~MinObservations 25Thecoatingsurfacecontinues toflameandthecracksarenow1/8to1/2in.wide.Thecoatingisdelaminating atseveralareasonthewebarea.30Smallpiecesofthecoatingmaterialarefallingfromthecenterareaofthenorthflange.Flamescontinuetoemanatefromthecracks.35Thecoatinghasdelaminated fromseveralareasonbothflanges.Averagedepthofthedelaminated materialis1/8in.,60Thesurfaceofthecoatingmaterialcontinues toflame.Thematerialhasbowedout2to0in.fromthesouthflange.Thecoatingmaterialismostlyrustcoloredwithtanareasadjacenttothecracks.Thecoatingisnolongerdelaminating fromthenorthflange,but continues toflame.7085100Thecoatingisbecomingwhiteincolor.Lightflamescontinuetoenamatefromthecracksinthecoating.Lightflamingcontinues.

Thecracksarenow1/8to1in.wide.110Thedepthoftheswellingonbothflangesis1-1/2to23.n~120Thecol'orofthemasticcoatingismostlywhiteandcontinues toemitflames.Hostcracksare1/8to1-1/2in.wide.

FileR6802-6APageTl;4Issued:6-5-78TestTimep'MinObservations 130Lightlazyflamescontinuefromthecolumnwebareas.140Lightflaroescontinuetoemitfromthecoatingattheintersection ofthecolumnwebandbothflanges.150160Thecracksincoatingareclosingduetoswellingofthematerial.

Thefiberglass meshisvisibleonseveralareasofthecoating.Allflaroinghasstoppedandthecoatingiswhiteincolor.IWidthofthecracksattheintersection ofthecoluron4ebandbothflangesis1to1-1/2in.170Cracksatwebandflangeintersection are1to2in.wide.188Firetestterminated.

TemeraturesOfTheColumn-Thetemperatur esthatdeveloped duringthefiretestandthelocationofthethermocouples atthevariouslevelsareshownonILL.4.Limitingteroperatures arereachedwhentheaveragetemperature atanyonelevelexceeds1000Foranyindividual temperature readingexceeds1200F.Thelimitingaveragetemperature wasreachedat172rainbythethreethermocouples'ocated atLevelB.Theindividual temperature wasreachedat187min.STUDYFORCLASSIFICATION PURPOSES:

Asdiscussed intheSectionGeneralofthisReport,thesubmittor requested thatanengineering evaluation beperformed todetermine theminimumdryfilmthickness ofmasticcoatingrequiredtoafforda3hrratingwhenappliedtoaW14X228structural steelcolumn.

FileR6802-SApageT1-5Issued:6-5-78IAsummaryofthecolumntestresultsincludedinthisengineering evaluation isshownbelow:~ReortR6802-3R6802-4R6802-6AHaterialThickness, In.5/321/415/32Occurrence OfLimitingTemperature, Min+77127172+-Limitingaveragecross-sectional temperature of'000Fused.Todetermine thethickness ofthemasticcoatingrequiredforthe3hrrating,acomputeranalysisoftheabovematerialthicknesses andtimetoreachthelimitingtemperatures wasobtained.

Basedupontheresulting

equation, Y=0.000471xitwasdetermined thataminimumthickness of1/2in.wouldafforda3hrrating.ThetestdataandtheplotoftheequationareshownonILL.6.Asafetyfactoryof8percent(14min)wasusedtodetermine theabovethickness sincetheequationisanextrapolation oftestdata.GDP/RMB FileR6802-6APageC1Issued:6-5-78C~CONCLUSIONS Thefollowing conclusions represent thejudgement ofUnderwriter sLaboratories Inc.basedupontheresultsoftheexamination andtestsconducted intheReport,astheyrelatetoestablished principles andpreviously recordeddata.FIRERESISTANCE

~PROPERTIES:

Itisjudgedthata1/2in.thickness ofmasticcoating,appliedasdescribed inthisReportwillafforda3hrratingwhenappliedtoastructuralsteelcolumnwhosesizeisequaltoorgreat'erthanaM14X228withamin'imumflangethickness of1-11/16in.,aminimumwebthickness of't-1/16in.,andaminimumcrosssectional areaof67.06sqin.Theassembly, insummarized formasshown.ontheindividual designillustration includedinthisReport,willbeillustrated intheFireResistance Directory asColumnDesignNo.X611.ThisClassification isbasedonthetemperature limitations of1000Faverageand1200Fmaximumallowable asdescribed underthe"Conditions ofAcceptance" forstructural steelcolumnsoftheStandardofUnderwriters Laboratories Inc.forFireTestsofBuildingConstruction andMaterials, StandardUL263(ASTME119,NFPANo.251).PRACTICABILITY:

Themasticcoatingandglassfibergauzeofthetypeusedforthisinvestigation canbereadilyappliedtosteelcolumnsbyexperienced workmenusingproperequipment.

Materials andsprayingprocedures inaccordance withthosedescribed inthisReportaresignificant factorsinthefireresistance ofthisconstruction..CONFORMITY:

l'hisconstruction wastestedinaccordance withtheStandardforFireTestsofBuildingConstruction andMaterials, UL263{ASTME119,NFPANo.251)~

FileR6802-6APageC2Issued:6-5-78FOLLOM-UP PROGRAM:Themasticcoatingasdescribed hereiniscurrently coveredundertheClassification andFollow-Up ServiceofUnderwriters Laboratories Inc.UndertheService,themanufacturer isauthorized tousetheLaboratories'lassification MarkingonsuchproductswhichcomplywiththeFollow-Up ServiceProcedure andanyotherapplicable requirements ofUnderwriters.

Laboratories Inc.OnlythoseproductswhichproperlybeartheLaboratories'lassification Markingareconsidered asClassified byUnderwriters Laboratories Inc.TheClassification Markingusedon,themasticcoatingisillustratedbelow:VNDERMRITERS LABORATORIES INC.RCLASSIFIED MASTICCOATINGSFIRERESISTANCE CLASSIFICATION DESIGNNO.X611SEEULFIRERESISTANCE DIRECTORY

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>)GUIDEBXUVFIRERESISTANCE RATINGSX611ACARDDESIGNNO.X611RATING-3HR.~~~,~~~~~~~~~'J~'i~I00'~~~~~'li~~~~-.~i-~~~-t.~~~~I~'~a~g~y~~~r.~~~~yO~~J0~~gf~=R6802-6A FileR6802-6AGuideBXUVFireResistance RatingsJune5,1978(X611-BCard)(Continued FromX611-ACard)Mastic.Coatin s>>-Coatingmixedthoroughly andsprayappliedinseveralcoatsforadryfilmthickness of1/2in.tocolumnsurfaceswhich,mustbefreeofdirt,loosescaleandoil.Columnsurfacestobeprimedwithamodifiedalkydprimer.Glassfibergauze(Item2)pressedintoroatingpriortoapplication offinalcoatandlightlyrolledinplacewithapaintroller.Coatingmayshrinkcausingcracksduringcuring.Thesecracksshallbefilledwithadditional masticcoating.TSIInc.-Type330.Investigated forexteriorandinterioruse.Forexterioruse,Type350topcoattobeappliedovermasticcoatingatarateofapproximately 150sqftpergal.2.,GlassFiberGauze-Nominally 12in.wide,1.70ozpersqyd.Embeddedinmasticcoatingaroundentirecolumn.SteelColumn-MinimumsizeofcolumnaW14X228,withoutsidedimensions of16by15-7/8in.,aflangethickness of1-11/16in.,awebthickness pf1-1/16in.,andacross-sectional areaof67.06sqin.>>-BearingtheULClassification Marking.

FileR6802-6APageC3Issued:6-5-78Reportby:G.D.PALIKIJEngineering Assistant FireProtection Department Reviewedby:R.M.BERHINIGEngineering GroupLeaderFireProtection Department SUBMITTED BY:GDP/RMB:plh G.T.CASTINOManagingEngineerFireProtection