building code update

BuildingCodeUpdateNorth/EastRoofingContractorsAssocia3on

March31,2016

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Buildingcodeupdate

presentedby

MarkS.GrahamVicePresident,TechnicalServices

Na3onalRoofingContractorsAssocia3on(NRCA)

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Prerequisites•  Intermediate-toadvanced-level•  Someknowledgeofcoderequirements•  Generalknowledgeof2012I-codes•  Understand…Iamthemessenger

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Somebackground•  TheI-codesare“modelcodes”developedbytheInterna3onalCodeCouncil(ICC)

•  Modelcodesserveasthetechnicalbasisforstateorlocalcodeadop3on

•  Thecodeprovidestheminimumlegalrequirementsforbuildingconstruc3on…andopera3on

•  Thecodeisenforcedbythe“authorityhavingjurisdic3on”(AHJ)

•  Thecodecanalsoprovideabasisforconstruc3onclaims-relatedli3ga3on

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Interna9onalCodeCouncil(ICC)

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Publica9oncycle•  2000edi3on•  2003edi3on•  2006edi3on•  2009edi3on•  2012edi3on•  2015edi3on•  2018edi3on(currentlyindevelopment)

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Three-yearcodedevelopmentandpublica3oncycle

Roofing-specificprovisionsDiscussedinthispresenta3on

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Interna1onalBuildingCode,2015Edi1on

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•  Applicabletoallbuildingsandstructures,exceptsthoseapplicabletoIRC2015

•  Roofing-relatedrequirements:•  Ch.10-Meansofegress•  Ch.12-Interiorenvironment•  Ch.13-Energyefficiency•  Ch.15-Roofassembliesandroobopstructures

•  Ch.16-Structuraldesign•  Ch.20-Aluminum•  Ch.22-Steel•  Ch.24-Glassandglazing•  Ch.26-Plas3c

Ch.10–Meansofegress

Sec.1015.6-Mechanicalequipment,systemsanddevices•  Guardshavebeenrequiredforcomponentswhereservicesisrequiredwithin10b.ofroofedgeorwhereelevatedwalkwaysareraisedabove30inches

•  Excep3onnowaddedforpermanentfallarrest/restraintanchors

•  Devicesshallbereevaluatedforpossiblereplacementwhentheen3reroofcoveringisreplaced

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Ch.12-Interiorenvironment

Sec.1203.2-Ven9la9onrequired•  1:150rulewith1:300excep3on•  1:300excep3onrewordedandmoreconsistentwithIRC•  UnventedadcandunventedenclosedraberprovisionsaddinSec.1203.3-Unventedadcsandunventedenclosedraberassemblies

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Ch.13-EnergyefficiencySec.1301.1.1-Criteria•  ReferencetotheInterna3onalEnergyConserva3onCode(IECC)

•  ReferencetoIECC2015added

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Ch.15-RoofassembliesandrooPopstructuresSec.1502-Defini9ons•  Referencestochapter-specificdefini3onsinCh.2-Defini3ons

•  Newtermsanddefini3onsadded:–  Building-integratedphotovoltaic(BIPV)product–  Photovoltaicmodule–  Photovoltaicpanel–  Photovoltaicpanelsystem–  Photovoltaicshingles–  Radiantbarrier

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Ch.15-RoofassembliesandrooPopstructures

Sec.1504.1-Windresistanceofroofs•  WindresistancerequirementsforasphaltshinglesrelocatedfromSec.1507toSec.1504.1.1

•  Asphaltshinglewindresistanceclassifica3ontablescombinedintoTable1504.1.1-Classifica3onofasphaltshingles

[Con3nued…]

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Ch.15-RoofassembliesandrooPopstructuresSec.1504.1-Windresistanceofroofs•  Windresistanceofstructuralmetalpanelroofsystemsisnowsubdivided:– Thru-fastened:FM4474,UL580orASTME1592– Standingseam:ASTME1592orUL580

•  Aluminumpanelsnowallowedtobedesigned(tes3ngnotrequired)usingtheAluminumAssocia3on’sAluminumDesignManual

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Ch.15-RoofassembliesandrooPopstructuresSec.1505-Fireclassifica9on•  SlateoverASTMD226,TypeIIunderlaymentoncombus3bledecksnowClassAwithouttes3ng

•  BIPVproductsnowneedtobelistedandlabeledforfireclassifica3on

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Ch.15-RoofassembliesandrooPopstructuresSec.1507-Requirementsforroofcoverings•  NewrequirementsforPVshinglesaddedinSec.1507.17-Photvoltaicshingles–  Deckrequirements–  Slope–  Underlayment–  Fasteners/alachment– Materialstandards(UL1703)– Windresistance(ASTMD3161)

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Ch.15-RoofassembliesandrooPopstructuresSec.1505-Roofinsula9on•  FM4450removed,NFPA276added•  ASTMC1278(fiber-reinforcedgypsumboard)added•  ASTMC1177(glass-facedgypsumboard)added

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Ch.15-RoofassembliesandrooPopstructuresSec.1509-Radiantbarriersinstalledabovedeck•  Newsec3onandrequirements–  FM4450orUL1256tes3ng–  ComplywithASTMC1313

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Ch.15-RoofassembliesandrooPopstructuresSec.1511-Reroofing(previouslySec.1510)•  Re-covering/replacementlanguagesreformaled•  Excep3onaddedclarifyingsecondarydrainsdonotneedtobeaddedinroofsystemre-coveringandreplacementprojects

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Interna1onalResiden1alCode,2015Edi1on

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•  Applicabletoone-andtwo-familydwellingsandtownhousesnomorethanthreestoriesinheight

•  Roofing-relatedrequirements:•  Ch.8-Roof/ceilingconstruc3on•  Ch.9-Roofassemblies

Ch.9-Roofassemblies

MostchangesincorporatedintoIBC2015,Chapter15havealsobeenincorporatedintoIRC2015

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Ch.9-Roofassemblies

Sec.R905-Requirementsforroofcoverings•  UnderlaymentrequirementsconsolidatedintoSec.R905.1.1-UnderlaymentandTableR905.1.1(1)-Underlaymenttypes

•  Woodshingle/shakenails:–  Hot-dippedgalvanizedorType304stainless-steel–  Type316stainless-steelwithin15milesofsaltwatercoastalareasandforfire-retardantandpressure-impregnated,preserva3ve-treatedwoodshingles/shakes

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Ch.9-Roofassemblies•  RoobopPVrequirements:–  RemovedfromIRC2012,Ch.23-Solarenergysystems(IRC2015,Ch.23-Solarthermalenergysystems)

– AddedChapter3-Buildingplanning,Sec.R324-Solarenergysystems

– AddedR905.16-Photovoltaicshingles– AddedR907-Roobop-mountedphotovoltaicsystems– AddedR909-Roobop-mountedphotovoltaicpanelsystems

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Interna1onalEnergyConserva1onCode,2015Edi1on

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•  Applicabletoallbuildings,includingexis3ngbuildings(reroofing)

•  Format:•  Commercialprovisions(C)vs.Residen3alprovisions(R)•  Ch.1-ScopeandAdmin.•  Ch.2-Defini3ons•  Ch.3-Generalrequirements•  Ch.4-Energyefficiency•  Ch.5-Exis3ngbuildings•  Ch.6-Referencestandards

IECC2015,Fig.C301.1-Climatezones

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Ch4[CE]-Commercialenergyefficiency

Sec.C401.2-Applica9on•  ReferencetoASHRAE90.1changedfrom2010edi3onto2013edi3on

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Ch4[CE]-CommercialenergyefficiencySec.C402-Buildingenveloperequirements•  Sec3onreformaled•  Low-energybuildingsexempted:–  Lessthan3.4Btu/h·b2or1.0wal/b2offloorarea–  Nocondi9onedspace–  Greenhouses

•  Equipmentbuildingsexempted(Sec.C402.1.2)

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Ch4[CE]-CommercialenergyefficiencySec.C402.1.3-Insula9oncomponentR-value-basedmethod•  UseTableC402.1.3

Sec.C402.1.4-AssemblyU-factor,C-factororF-factor-basedmethod•  UseTableC402.1.4

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Roofing-specificadapta9onofTableC402.1.3CommercialBuildings(Insula3oncomponentR-value-basedmethod)

Climatezone Assemblydescrip9on

Insula9onen9relyabovedeck

Metalbuildings A^candother

1 R-20ci(allother)

R-19+R-11LS

R-38R-25ci(GroupR)

2R-25ci

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R-30ci

R-38(exceptMarine4

5 R-38(allother)R-49(GroupR,Marine4)

6 R-25+R-11LS

R-497R-35ci R-30+R-11LS

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28ci=Con3nuousinsula3on;LS=Linersystem


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Ch4[CE]-CommercialenergyefficiencySec.C402.3-Roofsolarreflectanceandthermalemi`ance•  Climatezones1,2and3,low-sloperoofsovercooled,condi3onedspaces(someexcep3ons)

•  Three-yearagedsolarreflectance0.55andthree-yearthermalemilanceof0.75,orthree-yearagedsolarreflectanceindexof64

•  Agedcalcula3onmethodbaseduponCRRC-1-12(Sec.C402.3.1)

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Ch4[CE]-CommercialenergyefficiencySec.C402.5-Airleakage-thermalenvelope(Mandatory)•  AllClimatezones,except2B(IECC2012exempted

Climatezones1,2,and3)•  Wholebuildingtes3ng(ASTME779);allowablemaximum

airleakagerateof0.40cfm/b2•  Materials(Sec.C402.5.1.2.1)andAssemblies

(C402.5.1.2.2)op3ons•  Deemed-to-complyMaterialsop3ons:

–  ClosedcellSPF,minimum1.5pcfdensity,–  Built-uproofingmembrane–  Modifiedbituminousroofmembrane–  Fully-adheredsingle-plyroofmembrane

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Ch.4[CE]-CommercialenergyefficiencySec.C503-Altera9ons•  Newexcep3ontoSec.503.1-General:

“4. Airbarriersshallnotberequiredforroofrecoverandroofmembranereplacementwherethealtera9onsorrenova3onstothebuildingdonotincludealtera9ons,renova3onsorrepairstotheremainderofthebuildingenvelope.”

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Interna1onalFireCode,2015Edi1on

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Applicability:•  Structures,facili3esandcondi3ons

•  Exis3ngcondi3onsandopera3ons


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Roofing-relatedprovisionsInterna9onalFireCode,2015Edi9on

•  Sec.303-Asphaltkelles•  Sec.317-Roobopgardens•  Sec.605.11-Solarphotovoltaicsystems•  Sec.905.3.8-Roobopgardens•  Sec.3317-Safeguardingroofingopera3ons

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Ch.6-Buildingservicesandsystems

Sec.605.11-Solarphotovoltaicpowersystems•  Sec3onreorganized•  NewrequirementsapplicabletoGroupR3buildings(low-occupancyboardinghouses,carefacili3es)

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Interna1onalPlumbingCode,2015Edi1on

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•  Applicabletoallplumbingsystems,exceptthoseapplicabletoIRC2015

•  Roofing-relatedrequirements:•  Ch.9-Stormdrainage

Ch.11-StormdrainageSec.1101.7-Roofdrainage•  Designbaseduponmaximumpossiblewaterdepth;assumedrainsareblocked.

•  [Sec.1105.2-Roofdrainflowrate]Baseduponheadofwaterabovetheroofdrain.

Sec.1103-Traps•  Leadersandstormdrainsconnectedtoabuildingsewersystemshallnotberequiredtobetrapped.

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Ch.11-StormdrainageSec.1101.6-Sizeofconductors,leadersandstormdrains•  Designroofdrainagebasedonflowrateofroofdrain,Table1106.2-Stormdrainpipesizing(gpm)andTable1106.3-Ver3calleadersizing(gpm)

•  Designgulersbaseduponflowratefromtheroofsurface,Table1106.6-Horizontalgulersizing(gpm)andTable1106.3-Ver3calleadersizing(gpm)

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Alterna9vematerials,designandmethodsofconstruc9onandequipment•  IBC2015,Sec.104.11•  IRC2015,Sec.R104.11•  IECC2015,Sec.C102.1andSec.R102.1•  IFC2015,Sec.104.9•  IPC2015,Sec.105.2

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ProfessionalRoofing,June2008

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lCC/NIBSsurveywww.ICCsafe.org

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Atypicalcodeofficial•  Betweentheagesof55and64•  Ajurisdic3onemployee(ratherthanthird-partyprovider)•  Worksinaone-tonine-personjurisdic3on,lessthan75,000inpopula3on

•  Earnsbetween$50,000and$75,000(mean2012salarywas$51,017accordingtotheU.S.CensusBureau)

•  Has26to35yearsofexperienceinthebuildingindustry,butonlyfiveto15yearsasacodeofficial

•  Enteredthecodeprofessionintheir30s;heldonetothreepriorjobs;firstjobwasasatradesperson

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Atypicalcodeofficial-con9nued•  Maypossessabachelor’sdegree(27percent),orhavenoaddi3onaleduca3onbeyondhighschool(25percent)

•  Iftheyholdabachelor’sdegree,itisprobablyinengineering,butitcouldbeinmanagement,accoun3ng,finance,etc.

•  Holdsaprofessionallicense,cer3ficate,cer3fica3onorothercreden3al

•  Currentroleisasainspector,planreviewerordepartmentmanager;possiblyalloftheseroles

•  Expecttoleavetheprofessioninthenextfiveto15years.

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ProfessionalRoofing,March2015Pages54-60

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NRCAcodemanualsshop.nrca.netor(866)ASK-NRCA

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ConsiderjoiningICC

Membershipcategories:•  Corporatemember:$400(completecollec3on)•  Buildingsafetyprofessionalmember:$150(1code)

hlp://www.iccsafe.org/Membership/Pages/join.aspx

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Lookingintothefuture….

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WinddesignforroofassembliesSpecifyingawindwarrantee,initself,

isnotproperwinddesign

Properwinddesign•  Determinewindloads–  IBCCh.16-StructuralDesign– ASCE7-10,“MinimumDesignLoadsforBuildingsandOtherStructures”

•  Designforresistance– FM4474– UL580orUL1897

IBCrequires(Sec.1603)designwindloadstobeshownintheConstruc9onDocuments


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Designwindloaddetermina9onwww.roofwinddesigner.com

FM1-28hasbeenupdatedwww.fmglobaldatasheets.com

•  October2015update•  BaseduponASCE7-05withenhancements

•  Reformaled•  Becau3ousofFM-insuredprojects

•  SeeProfessionalRoofing,March2016


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ProfessionalRoofing,March2016

•  UseRoofNav’sra3ngscalculator

•  Applya2.0safetyfactor•  Roofoverhangfactors(Table7)

•  Windbornedebrissepara3ondistances

•  Roof-mountedequipment(ASCE7-10)

•  Tornado-resistantdesign(Appendix)

ComparingFM1-28toASCE7-05andASCE7-10

Document Basicwindspeed(mph)

Designwindpressure(psf)

Zone1(Field)

Zone2(Perimeter)

Zone3(Corner)

FM1-28(withoutSF)

v=12043 72 108

FM1-28(w/2.0SF) 86 144 216

ASCE7-05(withoutSF)

v=12038 63 95

ASCE7-05(w/2.0SF) 76 126 190

ASCE7-10Strengthdesign vULT=150 59 99 148

ASCE7-10ASD(withoutSF)

vASD=11635 59 89

ASCE7-10ASD(w/2.0SF) 71 118 178

Example:AmanufacturingbuildinglocatedinNewOrleans,LA.Thebuildingisanenclosedstructurewithalow-sloperoofsystemandaroofheightof33b.ThebuildingislocatedinanareathatiscategorizedasExposureCategoryC.


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ASCE7-16(publicreviewdraP)

•  Revisedbasicwindspeedmap•  Changes(andnew)pressurecoefficients•  RevisedperimeterandcornerzonesExpecthigherfield,perimeterandcorner

upliRpressures

ASCE7-10basicwindspeedmapFig.1607A--VultforRiskCategoryIIBuildings


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ASCE7-16(draP)basicwindspeedmapRiskCategoryIIBuildings

GCppressurecoefficientsh≤60b.,gableroofs≤7degrees

Zone ASCE7-10 ASCE7-16(draP)

1’ -- -0.9

1 -1.0 -1.7

2(perimeter) -1.8 -2.3

3(corners) -2.8 -3.2


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Zonesh≤60b.,gableroofs≤7degrees

ASCE7-10 ASCE7-16(draP)

ProperwinddesignisoRen9mesavoided…andit’sonlygoingtogetmorecomplicated


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TheNRCARoofingManual

NRCAApp

• NRCAAppavailableontheAppleStoreandGooglePlayStorefortablets•  iPhoneAppalsoavailable• RegisterwithinAppasbeinganNRCAmember• TheNRCARoofingManualisviewabletoNRCAmembers• Favoriteandsendpagesfeatures


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Manualonlinewww.nrca.net

• AvailabletoallNRCAmemberregisteredusers(mul3pleuserspermembercompany)• “Membersonly”sec3on,clickon“Myaccount”,the“Electronicfile”• View,downloadandprint

MarkS.GrahamVicePresident,TechnicalServicesNa3onalRoofingContractorsAssocia3on10255WestHigginsRoad,600Rosemont,Illinois60018-5607(847)[email protected]: @MarkGrahamNRCAPersonalwebsite:www.MarkGrahamNRCA.com

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