Detailing)Considerations) for)multi2story)wood) Frame)Buildings) Presentedby: LisaPodesto,PE,MS SeniorTechnicalDirector
TheWoodProductsCouncil is aregisteredproviderwiththe AmericanInstituteofArchitects ContinuingEducationSystems AIA/CES),Provider#G516.! Credits)earnedoncompletion ofthiscoursewillbereportedto AIACESforAIAmembers. CertificatesofCompletionfor bothaiamembersandnonqaia membersareavailableupon request. Thiscourseisregisteredwith AIACESforcontinuing professionaleducation.as such,itdoesnotinclude contentthatmaybedeemed orconstruedtobean approvalorendorsementby theaiaofanymaterialof constructionoranymethodor mannerof handling,using,distributing, ordealinginanymaterialor product. Questionsrelatedtospecificmaterials, methods,andserviceswillbeaddressed attheconclusionofthispresentation.
Course)Description) Thisseminarwillprovideanoverviewofdetailing issuesrelatedtothedesignoffourqandfiveqstory woodqframebuildingsundertheinternational*building* Code.Providedbyanexpertinwooddesignand engineering,itwillcovercommondetailingchoices relatedtofireandlifesafety,suchasdetailingat exteriorwalls,aswellasbalconiesandshafts. Examplesofvariousbuildingconfigurationsandsite layoutswillbeusedtoillustratecommondetailing choices.
Learning)Objectives) 1. EvaluateexamplesofmidQrisebuildingswithanemphasis onconfigurationsandsitelayouts 2. RecognizecommondetailingusedinmultiQstorystructures acrossthecountryforexteriorwalltofloorintersections 3. IdentifyIBCrequirementsforfirewallsandtheirimpacton detailingchoices. 4. Discussdetailingoptionsrelatedtothedesignofbalconies andshaftsinmultiqstorywoodbuildings
Outline) MidQriseConfigurations DesignConsiderations FireRatedWallAssemblies
Mid2Rise)Construction)Overview)
Walk2up/)Tuck)Under) Firstfloorwalkupunitswithprivategarage Benefits: Eliminatesneedfor SQ2parkinggarage Canbeallwood Leastexpensive overallbutlowest densificationrates
Wrap2Around)) Walkupunitssurroundparkingstructure Benefits: enhancedsecurity Centralizedaccessto parking Visualappealfrom street Moreexpensivethan walk/uptuckqunder 5storyyields60Q80 units/acre
Podium) Multiplestoriesofwoodoveranelevatedconcrete deck Benefits: Increasednumber ofstories Accommodates MixedQuse occupancies Mostexpensivebut canallowincreased density
Podium) 4storiesofresidentialoverpodiumparkingorretail) 60Q80units/acre InmanParkCondos,Atlanta,GA Davis&Church
Podium) 5storiesoversubterraneanparking 5storiesoverretail 100Q120units/acre AvalonBayStadium,Anaheim,CA VanDorpeChouAssociates InmanParkCondos,Atlanta,GA Davis&Church
Podium) 5storiesoverresidentialpodium 120Q140units/acre
Podium) 5storieswithmezzanine+residentialpodium 125Q145units/acre 120Union,SanDiego,CA TogawaSmithMartin
Sloped)Sites) FashionValley,CA AvalonBayCommunities Seattle,WA PBArchitects FashionValley,CA AvalonBayCommunities
Typical)Mid2rise)Occupancy) HotelsRQ1) ApartmentsRQ2) B)Offices CondominiumsRQ2) StudenthousingRQ2) Live/workunitsRQ2) AssistedlivingRQ4) NursinghomesIQ2) AQ2)Restaurants/ cafeterias AQ3)Workoutfacilities AQ3)Meetingrooms B)Offices M)Shops SQ2)Parking SQ1)Storage
Mixed)Use)Occupancy) Locatedatwoodworks.org designtools online calculators HeightsandAreasCalculator
2012)Code)Conforming)Wood) AvailableforFreeDownload:www.awc.org
Outline) MidQriseConfigurations DesignConsiderations StructuralLoadTransfer/Serviceability) Acoustic BuildingEnvelope Constructability Fire FireRatedWallAssemblies
Platform)Framing) Structural Directbearing/noadd l hardware Constructability Framingcanbecompleted beforedrywalland insulationareinstalled Commonlengthstuds
Semi2balloon)Framing) Structural Additionalhardware/nodirect bearing Canhelpminimizebuilding shrinkage RatedAssemblies Mayaccommodatecontinuity inexteriorwallsintypeiii construction Constructability Customlengthstuds NoScale
Structural)Considerations)
Solution)12)Plain)Unreinforced)Brick2h>30 ) Design)must)be)in) strict)conformance) with)aci)530)section) 6.2.12Alt.)design) method)engineered)) ) Design)to)section)2.2) ASD))or)3.2.2) strength)) Unreinforced)masonry) ) Brick)veneer)must)be) self)supporting)and) not)supported)off)of) the)wood)framing) Jointsmustallowforalldifferential movementlateraldriftand verticalshrinkageofwoodframing Etc.).Weightofbrickmustnot besupportedbywoodframing Requiressteel lintelatopenings Brickgoesinto flexurewhenwall studsdeflect Anchors/tiestobe spacedamaximum of32 o.c.horiz.and 18 o.c.vert.except seismic) Veneermustbedesigned peraci530section2.2as plainunreinforcedmasonry Woodbackerstuds Allowsforvertical shrinkageofwood framing
Solution)22)Structural)Reinforced)Brick) Brick)units)are)similar)to) CMU s)where)vertical)and) horizontal)reinforcing)can) be)installed) Veneer)spans)floor)to) floor)without)transferring) loads)to)walls.) Loads)are)dumped) directly)into)floor) diaphragms)) Steel)lintels)over) openings)are)not)required) Intermediate)anchors/ties) are)not)required) Wall)spans)vert.)&)horiz.) Between)spaced)anchors) ) Spacedanchorsmustallow foralldifferentialmovement lateraldrift,verticalshrinkage ofwoodframing,etc.).weight ofbrickmustnotbesupported bywoodframing Veneeractsascomplete unit,notasindividual Segments.Supportsself weightplusoutqofqplane loads #3or#4rebartyp.) 4 )nom.)or)greater) Heavieranchorsare notaspronetofire damage Woodbackerstuds Reinf.horizontalbond beamorlintelunits overopenings Reinforcementreduces expansionandcracking Anchors/tiesare tieddirectlyinto floordiaphragms
Outline) MidQriseConfigurations DesignConsiderations StructuralLoadTransfer/Serviceability) Acoustic BuildingEnvelope Constructability Fire FireRatedWallAssemblies
Acoustic)Detailing)
Acoustic)Detailing)
Acoustic)Detailing)
Outline) MidQriseConfigurations DesignConsiderations StructuralLoadTransfer/Serviceability) Acoustic BuildingEnvelope Constructability Fire FireRatedWallAssemblies
Resources! BuildingsinMarinetoCold ClimateZonesinNorth America http://www.fpinnovations.ca/researchprogram/advancedbuildingsystem/ designingqenergyqefficientqbuildingqenclosures.pdf
Resources! Buildings)in)Marine)to)Cold)Climate)Zones)in)North)America) ) Chapter)3:)Moisture,)Air)and)Thermal)Control) BuildingasaSystem ClimateZones InteriorClimate,HVACInteraction CriticalBarrierConcept ControlofRainwaterPenetration ControlofAirFlow ControllingCondensation ConstructionMoisture ControllingHeatFlowandInsulation WholeBuildingEnergyEfficiency ComputerSimulationConsiderationsforWoodQframedEnclosures
Outline) MidQriseConfigurations DesignConsiderations StructuralLoadTransfer/Serviceability) Acoustic BuildingEnvelope Constructability Fire FireRatedWallAssemblies
Case)Study:)University)of)Washington) Architect:MahlumArchitects Engineer:CoughlinPorterLundeen Contractor:WalshConstruction UW)West)Campus)Student)Housing) Location:Seattle,WA 1700bedsin3hallsand2aptbldgs $177/sf 4/5bldgsmet2030challenge60% reductioninenergyconsumption)
Case)Study:)Innovations)in)Wood) Emory)Point) Location:Atlanta,GA 3buildingscompleteQLuxury Apt.,retail,restaurants 1)5storyTypeIIIwood frameoverslabongrade 2)4storiesofwoodover 1storyconcretepodium 35%savings $14/sfwoodconcept) $22/sfPTconc.Slaband frame) Architect:CooperCarry,The PrestonPartnership Engineer:Ellinwood+Machado, PruittEberlyStone Contractor:FortuneQJohnson Contracting Completed:2012 Photocredit:GablesResidential
Stella)Apartments,) Marina)Del)Ray,)CA) Architect:DesignARC.LosAngeles,CA Photos:LawrenceAnderson, www.lawrenceanderson.net
Case)Study:)Maximizing)View)and)Value)With)Wood) Marselle)Condominiums) Location:SeattleWA TypeIIIAcondocomplex 5Q1/2storiesofwood over2storiesofconcrete mezzanineadded$250k costbut$1minvalue 30%costsavingsover concrete Timesavingsoversteel Architect:PBArchitects Engineer:Yu&Trochalakis Contractor:Norcon,NW Completed:2009 PhotoCredit:MattTodd Photography
Outline) MidQriseConfigurations DesignConsiderations StructuralLoadTransfer/Serviceability) Acoustic BuildingEnvelope Constructability Fire FireRatedWallAssemblies
Heights)and)Areas) )IBC)Table)503)
Type)I)and)II)Construction) BuildingElementsareofnoncombustiblematerials exceptaspermittedbyibc603 Noncombustibleonly FireRetardantTreated NonQbearingext.wallsw/no firerating RoofEXCEPTinTypeIAof2 storiesormorewhereroofis< 20 fromfloorbelow HeavyTimber RoofexceptIAwherefirerating is1hrorless
Type)III)Construction) Exteriorwallsareofnoncombustiblematerialsandinterior buildingelementsareofanymaterial.frtispermittedin exteriorwallof2hrfireratingorless. Noncombustible Exteriorwalls FireRetardantTreatedallowed Exteriorwallsiffireratingis2hror less HeavyTimber HTusedinplaceof1hrratingorless UntreatedLumber Allinteriorelements
Summary)of)Building)Heights) Building Heights and Stories by Building Type With NFPA 13 Sprinklers Occupancy IIIA IIIB VA VB 85 ft 75 ft 70 ft 60 ft R-1/R-2/R-4 5 5 4 3 A-2/A-3 4 3 3 2 B 6 4 4 3 M 5 3 4 2 S-2 5 4 5 3 S-1 4 3 4 2 **ASCE712.2Q1limitswoodshearwallseismicsystemsto65 inheightinsdcd,e,f
Fire)Resistance) Key Differences in Fire Ratings for Construction Types)) IIIA IIIB VA Exterior wall framing FRT FRT non-frt Exterior wall fire rating 2 hr 2 hr 1 hr Floor assembly fire rating 1 hr 0 hr 1 hr Fire wall rating 3 hr 3 hr 2 hr
Choosing)Fire)Rated)Assemblies) TestedassembliesASTME119)perIBC703.2: UL:http://database.ul.com GypsumCatalog:www.gypsum.org Othertools:www.usgdesignstudio.com AWCDCA3 APAFireRatedSystems: http://www.apacad.org/cad_detail.cfm?id=2 AlternateMethodsperIBC703.3 DeemedtocomplytablesperIBC721 CalculatedFireResistanceperIBC722
Outline) MidQriseConfigurations DesignConsiderations FireRatedWallAssemblies Overview ExteriorWalls FireWalls FireBarriers FirePartitions Balconies
Fire2resistance)Rated)Wall)Assemblies) ))))))Fire)Confinement ) ))))Structural)Performance)
Fire2resistance)Rated)Wall)Assemblies) TherearefivebasictypesoffireQresistanceratedwall assemblies: LightFrameBearingWallsIBC704.4.1) ExteriorWallsIBC705) FireWallorPartyWallIBC706) FireBarrierIBC707) FirePartitionIBC708)
Light)Frame)Bearing)Walls)IBC)704.4.1)) RequiredfireQresistanceisthegreaterof: FireQresistanceratingfoundinTable601basedonthe buildingtypeofconstruction. TherequiredfireQresistanceratingrequiredforfireQ resistanceqratedassembliessupportedbythestructural wall. www.awc.orgfaq: What*is*the*correct*application*of*2012*IBC*Sections*704.2* Column*Protection)*and*704.3*Protection*of*the*primary* structural*frame*other*than*columns)*to*wood*construction?*
Outline) MidQriseConfigurations DesignConsiderations FireRatedWallAssemblies Overview ExteriorWalls FireWalls FireBarriers FirePartitions Balconies
Fire)Resistance)Rating) Basicassumptionisthatfiresbeginattheinteriorand ratedwallassembliesarenotrequiredfromtheexterior unlessclosetoanotherstructure. Interior Fire Protectionon Insideof Building Exterior
Fire)Resistance)Rating) )IBC)705.5)) Exterior)Walls) LotLine X<10 Exterior Interior) FireProtectionon ExteriorWallsWhen<30 Table601&602
Exterior)Walls)IBC)705)) Exteriorwallshavetoberatedtowhicheverisgreaterof. Table601:ThefireQresistanceratingrequiredto maintainverticalstructuralsupportandisbasedon thetypeofconstruction whetherornotthewallisloadbearing Table602:ThefireQresistanceratingrequiredto preventspreadoffirefromtheinsidetotheoutsideor outsidetoinside)andisbasedon typeofconstruction occupancygroup fireseparationdistancefsd)associatedwiththe exposureoftheexteriorwall
Fire)Resistance)Rating)2IBC)Table)601)
Fire)Resistance)Rating) )IBC)Table)602) ExteriorFireResistanceRating! Table601! Table602establishesrequirements! structuresseparatedby10 Q30 theyaretypically0or1hourrated FIRE-RESISTANCE&RATING&REQUIREMENTS&FOR&EXTERIOR&WALLS&BASED&ON&FIRE&SEPARATION&DISTANCEa,&e TYPE%OF% CONSTRUCTION OCCUPANCY%GROUP% H OCCUPANCY%GROUP%F9 1,%M,%S91 FIRE%SEPARATION% DISTANCE%=%X%feet) TABLE&602 OCCUPANCY%GROUP%A,%B,% E,%F92,%I,%R,%S92,%U b X%<%5 c All 3 2 1 5%<%X%<10 IA 3 2 1 Others 2 1 1 10%<%X%<%30 IA,%IB 2 1 1 d IIB,%VB 1 0 0 Others 1 1 1 d X%>%30 All 0 0 0 For%SI:%1%foot%=%304.8%mm. a.%load9bearing%exterior%walls%shall%also%comply%with%the%fire9resistance%rating%requirements%of%table%601. b.%for%special%requirements%for%group%u%occupancies%see%section%406.1.2 c.%see%section%705.1.1%for%party%walls. d.%open%parking%garages%complying%with%section%406%shall%not%be%required%to%have%a%fire9resistance%rating. e.%the%fire9resistance%rating%of%an%exterior%wall%is%determined%based%upon%the%fire%separation%distance%of%the%exterior%wall%and%the%story%in%which%the% wall%is%located.
Exterior)Walls)IBC)705)) An)exterior)wall)is)defined)as)a)wall)that)is)used)as) an)enclosing)wall)of)a)building)other)than)a)fire) wall.)there)is)no)requirement)for)an)exterior)wall)to) extend)to)the)foundation)in)a)stepped)building.)) Posts,beamsor walls,thatsupporta ratedexteriorwall mustbefire resistanceratednot lessthantherating ofthesupported wallibc704.1)
Fire)Resistance)Rating) )IBC)705.5)) Exterior)Walls) FireSeparation>10 shallberatedforexposurefrom theinsideinaccordancewith601and602 FireSeparation<10 shallberatedforexposuretoboth sidesinaccordancewith601and602 LotLine X<10 Exterior Interior) FireProtectionon ExteriorWallsWhen<30 Table601&602
2)HR)Exterior)Wall)Assembly) )Type)III) EXTERIOR CEMENT PLASTER, MIN. THICKNESS 3/4" TO FACE OF LATH 1 LAYER 5/8" FIBERGLASS MAT GYPSUM SHEATHING FRAMING AT 16" O.C.. MIN. 2 X 4 STRUCTURAL WOOD PANELS) WHERE REQUIRED FOR SHEAR MIN. 3" THICK MINERAL WOOL BATT INSULATION 2 LAYERS 5/8" TYPE 'X' GYPSUM BOARD AT INTERIOR CONDITIONS EXTERIOR CEMENT PLASTER OVER FIBERGLASS MAT GYPSUM SHEATHING AT EXTERIOR CONDITIONS Commonissueswith testedassemblies: AssemblyAsymmetryQ separateassemblies foreachside 2"HOUR RATING PER UL DESIGN NO. U371 2"HOUR EXTERIOR WALL
Adding)lateral)resistance) Commonissueswith testedassemblies: Inclusionofwood structuralpanel ESR2586 FRTmayalsobe substitutedfor untreatedwood
1hr)rated)floor)assemblies) )Type)IIIA/VA) CommonissueswithUL approvedassemblies: ShallowFloordepthQ Useprescriptive assembliesqibc 721.12)assembly 14Q1.1 OrusetheCAM methodinibc722
Type)III)Construction) 5/8 TypeXGWB 1layerfor1hrrating 2layersfor2hrrating FireRetardantTreated Wallstuds,platesandsheathing 1 NoScale UntreatedLumber Floorframingsolidsawnor engineered) Floorsheathing
Continuity)of)FRT) 5/8 TypeXGWB 1layerfor1hrrating 2layersfor2hrrating FireRetardantTreated Wallstuds,platesandsheathing 2 NoScale UntreatedLumber Floorframingsolidsawnor engineered) Floorsheathing
Type)III)Construction)Detail)Example) 5/8 TypeXGWB 1layerfor1hrrating 2layersfor2hrrating FireRetardantTreated Walltuds,platesandsheathing [2xBlockingcountsfor1hrfire protectionpernds16.2.1)] [Floorsheathing4 Q8 in] NoScale 3 UntreatedLumber Floorframingsolidsawnor engineered) Floorsheathing
Type)III)Construction)Detail)Example) 5/8 TypeXGWB 1layerfor1hrrating 2layersfor2hrrating FireRetardantTreated Studs,platesandsheathing 2xBlockingcountsfor1hrfire protectionpernds16.2.1) [Floorsheathing4 Q8 in] NoScale 4 UntreatedLumber Floorframingsolidsawnor engineered) Floorsheathing
Type)III)Construction)Detail)Example) 5/8 TypeXGWB 1layerfor1hrrating 2layersfor2hrrating CONTINUE GYPSUMTO BOTTOMOF SHEATHING FireRetardantTreated Studs,platesandsheathing [Floorsheathing4 Q8 in] 5 UntreatedLumber Floorframingsolidsawnor engineered) Floorsheathing
Type)III)Construction)Detail)Example) What)is)being)enforced)in)jurisdictions) you)are)working)in?) ) )
Outline) MidQriseConfigurations DesignConsiderations FireRatedWallAssemblies Overview ExteriorWalls FireWalls FireBarriers FirePartitions Balconies
Fire)wall)))))))))))))))) IBC)706)) Dividesstructureinto separatebuildings Continuousfromfoundation ortopofthreehourpodium) toorthroughroof Structuralstabilityrequired toallowcollapseoneither sidefromfirewithout causingcollapseoffirewall Specialrequirementsatroof andintersectionwith exteriorwalls,athorizontal projectingelementsand betweensteppedbuildings RequiredtobeofnonQ combustibleconstruction exceptintypevconstruction 2to4hourratedTable 706.4) Fire)Barrier)))))))))) IBC)707)) Designedtorestrictthe spreadoffirewithcontinuity throughthebuilding Dividesstructureintofire areas,andfirebarriersare requiredforvariouspurposes suchasshaftenclosures,exit enclosures,atrium separation,occupancy separations,andcontrolor incidentaluseareas. Supportedbyconstruction ofequalfireresistanceq ratingexceptforincidental useareasintypeiib,iiiband VBconstruction) 1to4hourratedtable 707.3.10) Fire)Partition)))) IBC)708)) Separatesdwellingunits, sleepingareas,corridors, andtenantspaces. Mayterminateatthelower sideofafire resistance ratedfloor/ceiling/roof assembly Inmostinstancesfire partitionsarenotrequiredto besupportedbyfire resistanceqrated constructionintypeiib,iiib andvbconstructionsection 708.4) Rated1hourorlessIBC section708.3)
Fire)Walls)2)706) Used: Tocreateseparate buildings AsaPartyWalllotline) StructuralStability Allowforstructural collapseoneitherside whilewallstaysinplace ORdoublewallper NFPA221
Fire)Walls) DesignOptionsNFPA221: 1. Singlewall 2. DoubleWall 3. CantileveredWall
Fire)Walls) )Diaphragm)Continuity)
Fire)wall)Detailing) 3"HR. ASSEMBLY: 1 5/8" METAL STUDS WITH 3 LAYERS 1/2" TYPE 'X' GYP. BD. EACH SIDE CONTINUOUS STRUCTURAL WOOD PANELS " USE FIRE"TREATED PANELS THROUGH WALL CAVITY¹ CONTINUOUS 13 1/2" WIDE 14 GA. GALV. SHT. METAL CONTINUOUS 16 GA. TRACK TOP AND BOTTOM FIRE SAFING CONTINUOUS 16 GA. COMP. CHANNEL RIM JOIST WITH SOLID BLOCKING 3"HOUR FIRE WALL AT FLOOR/CEILING RESILIENT CHANNELS 3"HOUR FIRE CAULKING 1" AIR GAP 2 X 4 STUD WALL EACH SIDE, WITH STRUCTURAL WOOD PANELS AS REQUIRED FOR SHEAR AND 1 LAYER 5/8" TYPE 'X' GYP. BD. ¹CONSULT LOCAL JURISDICTION HAVING AUTHORITY FOR ACCEPTANCE OF FIRE"TREATED WOOD PANELS RUNNING THROUGH 3"HOUR ASSEMBLY IN THIS APPLICATION. I"JOIST FRAMING WITH WOOD PANEL DIAPHRAGM RUNNING THROUGH FIRE WALL 3"HOUR FIRE WALL AT FLOOR/CEILING RESILIENT CHANNELS 3"HOUR FIRE CAULKING 3"HR. ASSEMBLY: 1 5/8" METAL STUDS WITH 3 LAYERS 1/2" TYPE 'X' GYP. BD. EACH SIDE 1" AIR GAP 2 X 4 STUD WALL EACH SIDE, WITH STRUCTURAL WOOD PANELS AS REQUIRED FOR SHEAR AND 1 LAYER 5/8" TYPE 'X' GYP. BD. WOOD TRUSS FRAMING WITHOUT WOOD PANEL DIAPHRAGM RUNNING THROUGH FIRE WALL CAD&RevitDetails:www.woodworks.org
Fire)Wall)Assemblies) IBC)706.3) FirewallsshallbeofanyapprovednonQ combustiblematerials. Exception:)BuildingsofTypeVconstruction
3hr)Fire)Wall)Assemblies) )Type)III) WOOD STRUCTURAL PANELS WHERE REQUIRED FOR SHEAR WOOD STUD WALLS ON EITHER SIDE OF FIRE WALL Otheroptions: NFPA2216.5.1 0' " 1" 0' " 1" AIR GAP AIR GAP 1 5/8" METAL STUDS AT 24" O.C. MAX. BATT INSULATION OPTIONAL) INTERIOR OR EXTERIOR FINISH AS REQUIRED 3 LAYERS 1/2" TYPE 'X' GYP. BD. ON EACH SIDE OF METAL STUDS 3 HOURS PER UL DESIGN NO. U435 3"HOUR FIRE WALL ASSEMBLY
Outline) MidQriseConfigurations DesignConsiderations FireRatedWallAssemblies Overview ExteriorWalls FireWalls FireBarriers FirePartitions Balconies
Fire)Barriers) )IBC)707) Supportedbyassemblyofequal orgreaterfireresistancewith exceptionswhenrequiredfor separatingincidentaluseareasin typeiib,iiibandvbconstruction) Commonlyusedin: Shaftenclosures Interiorexitstairway Exitstairwayenclosures Exitpassageways IncidentalusesIBC509) Occupancyseparations Creatingseparatefireareas 2012IBCCode&Commentary
Shaft)Walls) WoodDesignFocus:Volume22,Issue3bySmith
Elevator)Shaft)Wall) WoodDesignFocus:Volume22,Issue3bySmith
Interior)Exit)Stairway)Enclosures)
Outline) MidQriseConfigurations DesignConsiderations FireRatedWallAssemblies Overview ExteriorWalls FireWalls FireBarriers FirePartitions Balconies
Fire)Partitions) )IBC)708) Commonlyusedtoseparate: Dwellingorsleepingunits insamebldg. Tenantspacesinmalls Corridorwalls Minimum1hrratingexcept: Somecorridors Separatedwellingunitsin IIB,IIIBandVBbuildings withnfpa13sprinklers throughout 2012IBCCode&Commentary
Fire)Partition) )Type)III)or)Type)V) 2 X 4 STUDS AT 16" O.C., STAGGERED 8" O.C. ON 2 X 6 PLATE 2 LAYERS 5/8" TYPE 'X' GYP. BD. EACH SIDE STRUCTURAL WOOD PANELS) WHERE REQUIRED FOR SHEAR 2"HOUR AND STC 50 TO 54 PER GA FILE NO. WP 3910 2"HOUR STAGGERED STUD PARTITION CAD&RevitDetails:www.woodworks.org
Outline) MidQriseConfigurations DesignConsiderations FireRatedWallAssemblies Overview ExteriorWalls FireWalls FireBarriers FirePartitions Balconies
Balconies) )IBC)1406.3) BalconiesofcombustibleconstructionandnotFRTshall be: Ratedinaccordancew/Table601forfloors OrbeofTypeIV Andshallnotexceed50%ofbldgperimeter Exceptions BalconiesinTypeIII,IVandVcanbeoftypeVconst andshallnothavefireresistanceratingifsprinkler protectionprovided Untreatedwoodispermittedforrailsandguardrails
Balconies) )IBC)1406.3) So. ForTypeIIIorVbalconyoptionsare: 1. NonQcombustible nosprinklers/nofirerating 2. FRT nofiresprinklers/nofirerating 3. TypeIV nofiresprinklers/nofirerating 4. Nontreated firesprinkler/nofirerating 5. Nontreated fireratedper601&602/nosprinkler
Balconies)
Questions?) ThisconcludesThe AmericanInstituteof ArchitectsContinuing EducationSystems Course Lisa)Podesto,)PE,)MS) WoodWorks lisa@woodworks.org