Multi&story+Wood+ Frame+Structures+

Transcription

1 Multi&story+Wood+ Frame+Structures+ Introduction+to+How+to+Build+ Bigger+and+Taller+ +Answeringthemostfrequentlyasked questionsaboutmid8riseconstruction

2 Outline+/+Learning+Objectives+ + Mid8riseConstructionOverview Evaluateexamplesofmid8risewoodbuildingswithanemphasison configurationsandsitelayouts MaximizingHeightandArea IdentifyInternationalBuildingCode(IBCmaximumheightandassociated allowableareofwood8framestructuresincludingallowancesfromspecial provisions UnderstandingShrinkage Calculateoverallbuildingshrinkageandunderstandhowto minimizeandcompensatedforitseffects DetailingConsiderations Recognizecommondetailingusedforexteriorwalltofloor intersectionsacrossthecountryformulti8storystructures

3 Outline+ Mid8riseConstructionOverview MaximizingHeightandArea UnderstandingShrinkage DetailingConsiderations

4 Mid&Rise+Construction+Overview+

5 Urban+Infill+Development+

6 Walk&up/+Tuck+Under+ Firstfloorwalkupunitswithprivategarage Benefits: Eliminatesneedfor S82parkinggarage Canbeallwood Leastexpensive overallbutlowest densificationrates

7 Wrap&Around++ Walkupunitssurroundparkingstructure Benefits: enhancedsecurity Centralizedaccessto parking Visualappealfrom street Moreexpensivethan walk/uptuck8under 5storyyields60880 units/acre

8 Podium+ Multiplestoriesofwoodoveranelevatedconcrete deck Benefits: Increasednumber ofstories Accommodates Mixed8use occupancies Mostexpensivebut canallowincreased density

9 Podium+ 4storiesofresidentialoverpodium(parkingorretail 60880units/acre InmanParkCondos,Atlanta,GA Davis&Church

10 Podium+ 5storiesoversubterraneanparking 5storiesoverretail units/acre AvalonBayStadium,Anaheim,CA VanDorpeChouAssociates InmanParkCondos,Atlanta,GA Davis&Church

11 Podium+ 5storiesoverresidentialpodium units/acre

12 Podium+ 5storieswithmezzanine+residentialpodium units/acre 120Union,SanDiego,CA TogawaSmithMartin

13 Sloped+Sites+ FashionValley,CA AvalonBayCommunities Seattle,WA PBArchitects FashionValley,CA AvalonBayCommunities

14 Sloped+Sites+ HEIGHT,+BUILDING.+Theverticaldistance fromgrade'plane'totheaverageheightofthe highestroofsurface. (2009IBC GRADE+PLANE.+Areferenceplane representingtheaverageoffinishedground leveladjoiningthebuildingatexterior'walls. Wherethefinishedgroundlevelslopesaway fromtheexterior'walls,thereferenceplane shallbeestablishedbythelowestpoints withintheareabetweenthebuildingandthe lot'line'or,wherethelot'line'ismorethan6 feet(1829mmfromthebuilding,between thebuildingandapoint6feet(1829mm fromthebuilding. 626DekalbAvenue,Atlanta,GA MattChurch8DavisChurchStructuralEngineers

15 Definition+ +IBC+202+

16 Typical+Mid&rise+Occupancy+ Hotels(R81 Apartments(R82 (BOffices Condominiums(R82 Studenthousing(R82 Live/workunits(R82 Assistedliving(R84 Nursinghomes(I82 (A82Restaurants/ cafeterias (A83Workoutfacilities (A83Meetingrooms (BOffices (MShops (S82Parking (S81Storage

17 Maximizing+Height+and+Area+ Mid8riseConstructionOverview StepstoMaximizingHeightandArea 1. TabulateAreas 2. Allowableincreases 3. MaximumBuildingArea 4. Mezzanine&SpecialDesignProvisions UnderstandingShrinkage DetailingConsiderations

18 Type+I+and+II+Construction+ BuildingElementsareofnoncombustiblematerials exceptaspermittedbyibc603 Noncombustibleonly FireRetardantTreated Non8bearingext.wallsw/no firerating RoofEXCEPTinTypeIAof2 storiesormorewhereroofis< 20 fromfloorbelow HeavyTimber RoofexceptIAwherefirerating is1hrorless

19 Type+III+Construction+ Exteriorwallsareofnoncombustiblematerialsandinterior buildingelementsareofanymaterial.frtispermittedin exteriorwallof2hrfireratingorless. Noncombustible Exteriorwalls FireRetardantTreatedallowed Exteriorwallsiffireratingis2hror less HeavyTimber HTusedinplaceof1hrratingorless UntreatedLumber Allinteriorelements

20 Heights+and+Areas+ +IBC+Table+503+

21 Step+1+ +Tabulated+Height+and+Area+ 65 (4 TypeIIA 65 (4 TypeIIIA Occupancy+ IIA+ IIIA+ R81 24,000 24,000 R82 24,000 24,000

22 Step+1+ +Tabulated+Height+and+Area+ 55 (4 TypeIIB 55 (4 TypeIIIB Occupancy+ IIB+ IIIB+ R81 16,000 16,000 R82 16,000 16,000

23 Step+1+ +Tabulated+Height+and+Area+ TypeVA TypeVB 50 (3 40 (2 Occupancy+ VA+ VB+ R81 12,000 7,000 R82 12,000 7,000

24 Height+Modification+ +IBC+504+ IBC Whereabuildingisequippedthroughoutwithan approvedsprinklersystem! maximumheightisincreasedby20feet! maximumnumberofstoriesisincreasedbyone. Can+be+combined+w/+frontage+area+increase+& Can+be+combined+w/+sprinkler+area+increase+& EXCEPTforI82occupancyofTypeIIB,IIIandV constructionandhoccupanciesorwheresprinklersare usedassubstitutionfor1hrfireresistance. '

25 Automatic+Sprinkler+Increase Automatic+sprinkler+system+increase.+.ForGroupRbuildingsequippedthroughoutwithanapproved automaticsprinklersysteminaccordancewithsection ,the valuespecifiedintable503formaximumbuildingheightisincreasedby 20feet(6096mmandthemaximumnumberofstoriesisincreasedby one,butshallnotexceed60feet(18288mmorfourstories, respectively. Section referencesNFPA13Rsprinklersystem. ThislimitationdoesnotapplywhenusingNFPA13 SprinklerSystem

26 Area+Modification+ +IBC+506+ (Equation581 A a =A t +[A t xi f ]+[A t xi s ] A a =Allowableareaperstory(sq.ft. A t =Tabularareaperstory(sq.ft. I f =Areaincreasefactorduetofrontage (IBC506.2I fmax =.75 I s =Areaincreasefactorduetosprinklerprotection (IBC506.3I s =3for1story,I s =2for>1story

27 Frontage+Increases+ +IBC In2012code,thereisfurtherclarificationbetween W forareaincreasesandfireseparationdistance forpurposesoffireresistanceratingsofwallsand openings Bldg.1 W FSD Bldg.2

28 Frontage+Increases+ +IBC FortwobuildingsonDIFFERENTlots lotline W Bldg.1 FSD Bldg.2

29 Frontage+Increases+ +IBC FortwobuildingsontheSAMElot Bldg.1 imaginarylotline W FSD Bldg.2

30 Frontage+Increases+ +IBC Buildingsnearpublicrightofways: lotline W Bldg.1 FSD Bldg.2 FSD centerlineofpublicway W

31 Step+2+ +Increased+Height+&+Story+Area+ TypeIIA TypeIIIA 85 (5 NFPA13 85 ** (5 NFPA13 Occupancy+ IIA+(ft 2 *+ IIIA+(ft 2 *+ R81 72,000+18,000(maxfrontage 72,000+18,000(maxfrontage R82 72,000+18,000(maxfrontage 72,000+18,000(maxfrontage *AreasreflectPERSTORYmax.Totalbuildingmaxmaylimitareafurther. **ASCE limitswoodshearwallseismicsystemsto65 inheightinsdcd,e,f

32 Step+2+ +Increased+Height+&+Story+Area+ TypeIIB TypeIIIB 75 (5 NFPA13 75 ** (5 NFPA13 Occupancy+ IIB+(ft 2 *+ IIIB+(ft 2 *+ R81 48,000+12,000(maxfrontage 48,000+12,000(maxfrontage R82 48,000+12,000(maxfrontage 48,000+12,000(maxfrontage *AreasreflectPERSTORYmax.Totalbuildingmaxmaylimitareafurther.

33 Type+IIIB+for+R+Occupancy Horizontalassembliesseparatingdwellingunitsinthe samebuildingandhorizontalassembliesseparatingsleeping unitsinthesamebuildingshallbeaminimumof18hourfire8 resistance8ratedconstruction. EXCEPTION Dwellingunitandsleepingunitseparationsin buildingsoftypeiib,iiibandvbconstructionshall havefire8resistanceratingsofnotlessthan1/2hourin buildingsequippedthroughoutwithanautomaticsprinkler systeminaccordancewithsection

34 Step+2+ +Increased+Height+&+Story+Area+ TypeVA TypeVB 70 ** (4 NFPA13 60 (3 NFPA13 Occupancy+ VA+(ft 2 *+ VB+(ft 2 + R81 36,000+9,000(maxfrontage 21,000+5,250(maxfrontage R82 36,000+9,000(maxfrontage 21,000+5,250(maxfrontage *AreasreflectPERSTORYmax.Totalbuildingmaxmaylimitareafurther. **ASCE limitswoodshearwallseismicsystemsto65 inheightinsdcd,e,f

35 Opportunity+for+Office+Occupancy+(B+ TypeIIIA TypeIV 85 ** (6 NFPA13 85 ** (6 NFPA13 Occupancy+ IIIA+(ft 2 *+ IV+(ft 2 *+ B 85,500+21,375(maxfrontage 108,000+27,000(maxfrontage *AreasreflectPERSTORYmax.Totalbuildingmaxmaylimitareafurther. **ASCE limitswoodshearwallseismicsystemsto65 inheightinsdcd,e,f

36 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 A-2/A B M S S **ASCE limitswoodshearwallseismicsystemsto65 inheightinsdcd,e,f

37 Maximum+Building+Area Single+Occupancy+Area+determination+! Twostoriesabovegrade: MaximumBuildingArea=A a x2! Threestoriesormoreabovegrade: MaximumBuildingArea=A a x3! NoStoryshallexceedA a Exceptions++! Unlimitedareabuildings! BuildingswithNFPA13Rsprinklersystem A a AllowableAreaPERSTORY

38 Step+3+ +Max+Building+vs.+Story+Areas+ TypeIIIA TypeVA 85 ** (5 NFPA13 70 ** (4 NFPA13 Occupancy+ IIIA+ VA+ StoryArea 72,000+18,000(maxfrontage 36,000+9,000(maxfrontage BuildingArea 216,000+54,000(maxfrontage 108,000+27,000(maxfrontage **ASCE limitswoodshearwallseismicsystemsto65 inheightinsdcd,e,f

39 Step+3+ +Max+Building+vs.+Story+Areas+ TypeIIIA TypeIIIA 85 ** (5 NFPA13 OrTypeVA 60 ** (4 NFPA13R Occupancy+ IIIA+(NFPA+13+ IIIA+(NFPA+13R+ VA+(NFPA+13R+ StoryArea 72,000(3xtabulated 24,000(=tabulated 12,000(=tabulated BuildingArea 216,000(3xstory 96,000(4xstory 48,000(4xstory **ASCE limitswoodshearwallseismicsystemsto65 inheightinsdcd,e,f

40 Case+Study:+Innovations+in+Wood+ Emory+Point+ Location:Atlanta,GA 3buildingscomplete8Luxury Apt.,retail,restaurants (15storyTypeIIIwood frameoverslabongrade (24storiesofwoodover 1storyconcretepodium 35%savings $14/sf(woodconcept $22/sf(PTconc.Slaband frame Architect:CooperCarry,The PrestonPartnership Engineer:Ellinwood+Machado, PruittEberlyStone Contractor:Fortune8Johnson Contracting Completed:2012 Photocredit:GablesResidential

41 Mixed+Use+Occupancy+ Locatedatwoodworks.org designtools online calculators HeightsandAreasCalculator

42 Mixed+Use+Occupancy+ Locatedatwoodworks.org designtools online calculators HeightsandAreasCalculator

43 Step+4 Addition+of+Mezzanine+ Anintermediatelevelorlevelsbetweenthefloorandceiling ofanystoryandinaccordancewithibcsection505. Occupancy+ StoryArea BuildingArea IIIA+(NFPA ,000(3xtabulated 216,000(3xstoryarea *AreasreflectPERSTORYmax.Totalbuilding maxmaylimitareafurther. **ASCE limitswoodshearwallseismic systemsto65 inheightinsdcd,e,f 85 ** (5+mez TypeIIIA

44 Mezzanines+ +IBC+505+ Not+counted+toward+building+area**or+height+if:+ Maximum1/3floorareaofroomorspacewhere located Specialegressprovisionsapply Mustbeopenandunobstructedtoroominwhich it slocated(walls 42 allowed Severalexceptions Slightlydifferentforequipmentplatforms **DoescounttowardfireareawithregardtofireprotectioninChapter9

45 Case+Study:+Maximizing+View+and+Value+With+Wood+ Marselle+Condominiums+ Location:SeattleWA TypeIIIAcondocomplex 581/2storiesofwood over2storiesofconcrete mezzanineadded$250k costbut$1minvalue 30%costsavingsover concrete Timesavingsoversteel Architect:PBArchitects Engineer:Yu&Trochalakis Contractor:Norcon,NW Completed:2009 PhotoCredit:MattTodd Photography

46 Step+4&Horizontal+Building+Separation+ HorizontalAssembly=afire8resistance8ratedfloororroof assemblyofmaterialsdesignedtorestrictthespreadoffire inwhichcontinuityismaintained TypeIIIA 85 ** 85 (5+mez **ASCE limitswoodshearwallseismic systemsto65 inheight

47 Horizontal+Building+Separation Consideredseparatebuildingsaboveandbelowforpurposes ofareacalculationsif: overallheightisstilllimitedtominofeitherbuilding 3hrratedhorizontalassembly Buildingbelowisonestoryabovegrade BuildingbelowisType1Awithsprinklers Enclosurespenetratinghorizontalassemblyare2hrrated occupancyaboveisa,b,m,rors occupancybelowisa,b,m,rors82

48 Case+Study:+Wood+Buildings+Aim+High+ AvalonBay+Stadium+ Location:Anaheim,CA 251Apts.,13Ksfretail/restaurant TypeIIImodified 50%oftheirprojectsarepodium Semi8balloonframedwith16 I8joist atexteriorwalls Architect:WitheeMalcolmArchitects Engineer:VanDorpeChouAssociates Developer/Contractor:AvalonBayCommunities Photocredit:ArdenPhotography

49 AvalonBayStadium8Anaheim,CA Carbon+Case+Study:+High+Density+

50 Parking+Beneath+Group+R+ +IBC PossibilityofaTypeIVpodiumwherenumberofstoriesstarts aboveparkingwhen: OccupancyaboveisRandbelowisS82 LowerfloorisopenTypeIVparkingwithgradeentrance Horizontalassemblybetween1 st and2 nd floorshallbe! TypeIV! Have1hrfireresistanceratingwhensprinklered! Have2hrfireresistanceratingwhennotsprinklered overallheightisstilllimitedtooccupancy ChangeThisFooterbygoingtoView8>HeaderandFooter

51 APA&+N110:+Parking+beneath+Group+R+ GaltPlace Location:Galt,CA Architect:MichaelMalinowski OceanoatWarnerCenter Location:WoodlandHills,CA Architect:RCAlleyIII

52 Parking+Beneath+Group+R+

53 2012+Code+Conforming+Wood+ AvailableforFreeDownload:

54 Overview+ Mid8riseConstructionOverview MaximizingHeightandArea UnderstandingShrinkage Concepts Calculations Recommendations DetailingConsiderations

55 IBC+2009+on+Shrinkage Shrinkage.Woodwallsandbearingpartitionsshall notsupportmorethantwofloorsandaroofunlessan analysissatisfactorytothebuildingofficialshowsthat shrinkageofthewoodframingwillnothaveadverseeffects onthestructureoranyplumbing,electricalormechanical systems,orotherequipmentinstalledthereindueto excessiveshrinkageordifferentialmovementscausedby shrinkage.theanalysisshallalsoshowthattheroof drainagesystemandtheforegoingsystemsorequipment willnotbeadverselyaffectedor,asanalternative,such systemsshallbedesignedtoaccommodatethedifferential shrinkageormovements.

56 Key+Factors+Influencing+Shrinkage+ Pre8constructionmoisturecontent(MC In8serviceEMC Cumulativethicknessofcross8grainwood contributingtoshrinkage (Woodspecieshasrelativelylittleimpactsincemost speciesusedincommercialconstructionhave similarshrinkageproperties.

57 Basic+Wood+Theory+ Moisturechangescausedimensionalchanges perpendiculartograin Growingtree isfilledwith water Aswooddries,it shrinks perp.tograin Image:'Wood'Handbook,'Wood'as'an'Engineering'Material,'USDA'Forest'Service,' Forest'Products'Laboratory,'2010'

58 Basic+Wood+Theory+ ShrinkageinlumberexpectedACROSSthegrain. Longitudinalshrinkageisnegligible. Wider&Thicker888NOTTaller

59 Basic+Wood+Theory+

60 +Zone+of+Movement+ Shrinkageoccurs primarilyin horizontalmembers wallplates Floors + Be+aware+of+ cumulative+ shrinkage.+

61 Pre&Construction+Moisture+Content+ M i =19% M i =28%

62 Minimize+Pre&Construction+Moisture+Content+ 1. Minimizestorageofmaterialonsitewhererainand standingwatercanincreasemoisturecontent. 2. Keepunusedframingmaterialcovered 3. Inspectpre8builtwallpanelspriortoinstallationfor propermaterialandqualityofmechanicalfasteners. 4. Dry8in thestructureasquicklyaspossible. 5. Immediatelyremoveanystandingwaterfromfloor framingafterrainshowers.

63 Shrinkage+Resources+ +

64 In#service*EMC*(Average*EMC#*July* Map courtesy of US Forest Products Laboratory 64

65 In#service*EMC*(Average*EMC#*January* Map courtesy of US Forest Products Laboratory 65

66 Comprehensive+Shrinkage+Estimation+ Calculating+Shrinkage! ForMCbetween+6+to+14%+theformulais: S = D [ C ( M M ] S'=shrinkage(ininches D i =initialdimension(ininches i T C T /C R =dimensionchangecoefficient,tangential/radialdirection C T = forDouglasFir8Larch C T = forHem8Fir C T = forSpruce8Pine8Fir C T = forSouthernPine M F =finalmoisturecontent(percent M i =initialmoisturecontent(percent F i

67 Comprehensive+Shrinkage+Estimation+ Calculating+Shrinkage! ForMCoutside+the+range+of+6+to+14%+: S = S'=shrinkage(ininches Di 30(100 S T ( M M F 30 + M D i =initialdimension(ininches S T /S R =tangential/radialshrinkage(%fromgreentoovendry M F =finalmoisturecontent(percent M i =initialmoisturecontent(percent i i

68 Calculating+Shrinkage+ +Resources+ WoodHandbook: Chapter13 C T,C R Chapter4 S T,S R

69 Example+Shrinkage+Calculation+ Assume:S8Drylumber Find:4x4shrinkage

70 Quick+Shrinkage+Estimation:+ + AgainassumingtheinitialMC(M i is19percentand thefinalmc(m F is12percent Ourapproximatedshrinkageis: ForDougFirLarch: Example+Shrinkage+Calculation+ S = CD i ( M F M i = ( = inch ForSouthernPine: S = CD i ( M F M i = ( = inch

71 Minimizing+Shrinkage+ Balloonframing minimizesinter8floor shrinkagefromthewall assembly limitedinheight Complicated connections limitedfloorloads + Typically+not+used+in+ projects+over+2+stories+in+ height.+

72 Minimizing+Shrinkage+ Semi8balloonframing incorporatesfloorframing hangingfromtopplates Eliminatestangential shrinkageinzoneof movement Floorframingdoesn t contributetooverallbuilding shrinkage Non&standard+stud+lengths+ and+increased+hardware+ requirements+are+a+result.+

73 Case+Study:+Wood+Buildings+Aim+High+ Inman+Park+Condominiums+ Location:Atlanta,GA Architect:BrownDoaneArchitects Engineer:Davis&Church 4storiesofwoodover2storiesof concreteparking 117/8 I8joiststomaximize headroomandnotexceedbuilding height(10 plate DropceilingsforMEPatperimeter ofsomerooms

74 Differential+Movement+ Movementbetweenwoodframeelementsandother materialsthat donotshrinkatall shrinkmuchless expand

75 Finish+Considerations+ Largeexpansesofinterior andexteriordrywall, panelingandsidingneed tobelookedat specifically. Employexpansionjoint andslip8typedetailing.

76 Solution+1&+Plain+Unreinforced+Brick&h>30 + Design+must+be+in+ strict+conformance+ with+aci+530+section &Alt.+design+ method+(engineered+ + Design+to+section+2.2+ (ASD+or (strength+ Unreinforced+masonry+ + Brick+veneer+must+be+ self+supporting+and+ not+supported+off+of+ the+wood+framing+ Jointsmustallowforalldifferential movement(lateraldriftand 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

77 Solution+2&+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 weightplusout8of8plane loads #3or#4rebar(typ. 4 +nom.+or+greater+ Heavieranchorsare notaspronetofire damage Woodbackerstuds Reinf.horizontalbond beamorlintelunits overopenings Reinforcementreduces expansionandcracking Anchors/tiesare tieddirectlyinto floordiaphragms

78 Façade+Considerations+&+Resources+ BrickIndustryAssociation

79 Door+and+Window+Considerations+ [1/4 +per+floor]+ widesealantjoint sizedtoallow shrinkageofwood frameand expansionofbrick

80 MEP+Considerations+ Fullycompresswall framingbycompleting alldeadloadpotential PRIORtomechanical installations. Avoidrigidvertical pipinginmechanical andplumbingsystems. Flexiblemembersallow forshrinkagebetween floors.

81 MEP+Considerations+ Verticalventstacks shouldnotbeinstalled priortofullcompletion offraming. Ventstacksrequire specialattentionand mustbedesignedto allowforvertical movementdueto shrinkagebetween floors.

82 Facade+Considerations+ Panelsshouldnot extendacrosshe zoneofmovementif platformframed. Allowforupto½ gapbetween abuttingpaneledges topreventpanel bucklingwhenusing platformframingand sawnlumberjoists.

83 Structural+Considerations+ Strapholdownswillbuckle withtoomuch accumulatedmovement. Anchortypeholdowns shouldre8tightenedbefore installingfinishes. Threadedrodholdowns withshrinkage compensatingdevices workwellfor4sortiesand abovewithstackingunits.

84 Deck+Considerations+ WhitePaper: Multi8StoryWood8FrameShrinkageEffects onexteriordeckdrainage:acasestudyby ZenoMartin,WoodDesignFocusFall2010

85 Detailing+Tips+ Mitigatedistresstofinishesarisingfromcumulative differentialmovement: Beacutelyawareofthefactthattherewillbe differentialmovement Addressitindetailingandspecifications Considerwheredistresswilloccur Providedetailstorelieveoravoidit

86 Outline+ Mid8riseConstructionOverview MaximizingHeightandArea UnderstandingShrinkage DetailingConsiderations

87 Platform+Framing+ Structural Directbearing/noadd l hardware Constructability Framingcanbecompleted beforedrywalland insulationareinstalled Commonlengthstuds

88 Semi&balloon+Framing+ NoScale Structural Additionalhardware/nodirect bearing RatedAssemblies Mayaccommodatecontinuity inexteriorwallsintypeiii construction Constructability Framingcanbecompleted beforedrywallandinsulation areinstalled Customlengthstuds Canhelpminimizebuilding shrinkage

89 Case+Study:+University+of+Washington+ Architect:MahlumArchitects Engineer:CoughlinPorterLundeen Contractor:WalshConstruction UW+West+Campus+Student+Housing+ Location:Seattle,WA 1700bedsin3hallsand2aptbldgs $177/sf 4/5bldgsmet2030challenge(60% reductioninenergyconsumption

90 Detailing+for+Fire+Resistance+ Differentareasoffiredesign: Combustibility Fireresistance FireClass FireProtection 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

91 Fire+Resistance+Rating+ Basicassumptionisthatfiresbeginattheinteriorand ratedwallassembliesarenotrequiredfromtheexterior unlessclosetoanotherstructure. Interior Fire Protectionon Insideof Building Exterior

92 Fire+Resistance+Rating+&IBC+Table+601+

93 Fire+Resistance+Rating+ +IBC Exterior+Walls+ FireSeparation>10 shallberatedforexposurefrom theinsideinaccordancewith601and602 FireSeparation<10 shallberatedforexposuretoboth sidesinaccordancewith601and602 LotLine X<10 Exterior Interior+ FireProtectionon ExteriorWallsWhen<30 Table601&602

94 Fire+Resistance+Rating+ +IBC+Table+602+ ExteriorFireResistanceRating! Table601! Table602establishesrequirements! structuresseparatedby 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 %<%X%<10 IA Others %<%X%<%30 IA,%IB d IIB,%VB Others d X%>%30 All 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% c.%see%section% %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.

95 Choosing+Fire+Rated+Assemblies+ Testedassemblies(ASTME119perIBC703.2: UL: GypsumCatalog: Othertools: AWCDCA3 APAFireRatedSystems: AlternateMethodsperIBC703.3 DeemedtocomplytablesperIBC721 CalculatedFireResistanceperIBC722

96 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 PANEL(S 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: AssemblyAsymmetry8 separateassemblies foreachside 2"HOUR RATING PER UL DESIGN NO. U371 2"HOUR EXTERIOR WALL

97 Adding+lateral+resistance+ Commonissueswith testedassemblies: Inclusionofwood structuralpanel ESR2586 FRTmayalsobe substitutedfor untreatedwood

98 Fire+Wall+Assemblies+ IBC Firewallsshallbeofanyapprovednon8 combustiblematerials. Exception:+BuildingsofTypeVconstruction

99 2+HR+Fire+Wall +Type+V+ WOOD STRUCTURAL PANELS WHERE REQUIRED FOR SHEAR WOOD STUD WALLS ON EITHER SIDE OF FIRE WALL 0' " 1" 0' " 1" AIR GAP AIR GAP 2 1/2" METAL STUDS AT 24" O.C. BATT INSULATION (OPTIONAL INTERIOR OR EXTERIOR FINISH AS REQUIRED 2 LAYERS 5/8" TYPE 'X' GYP. BD. ON EACH SIDE OF METAL STUDS 2"HOUR RATING PER GA FILE NO. WP "HOUR FIRE WALL ASSEMBLY CAD&RevitDetails: selector.asp? framingtype=18708&bldgsystem=18620

100 3hr+Fire+Wall+Assemblies+ +Type+III+ WOOD STRUCTURAL PANELS WHERE REQUIRED FOR SHEAR WOOD STUD WALLS ON EITHER SIDE OF FIRE WALL Otheroptions: NFPA ' " 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

101 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:

102 1hr+rated+floor+assemblies+ +Type+IIIA/VA+ CommonissueswithUL approvedassemblies: ShallowFloordepth8 Useprescriptive assemblies8ibc 721.1(2assembly OrusetheCAM methodinibc722

103 Acoustic+Detailing+

104 Acoustic+Detailing+

105 Acoustic+Detailing+

106 Type+V+Construction+Detail+Examples+ A B C

107 Type+III+Construction+ 5/8 TypeXGWB 1layerfor1hrrating 2layersfor2hrrating FireRetardantTreated Wallstuds,platesandsheathing 1 NoScale UntreatedLumber Floorframing(solidsawnor engineered Floorsheathing

108 Continuity+of+FRT+ 5/8 TypeXGWB 1layerfor1hrrating 2layersfor2hrrating FireRetardantTreated Wallstuds,platesandsheathing 2 NoScale UntreatedLumber Floorframing(solidsawnor engineered Floorsheathing

109 Type+III+Construction+Detail+Example+ 5/8 TypeXGWB 1layerfor1hrrating 2layersfor2hrrating FireRetardantTreated Walltuds,platesandsheathing [2xBlocking(countsfor1hrfire protectionpernds16.2.1] [Floorsheathing4 88 in] NoScale 3 UntreatedLumber Floorframing(solidsawnor engineered Floorsheathing

110 Type+III+Construction+Detail+Example+ 5/8 TypeXGWB 1layerfor1hrrating 2layersfor2hrrating FireRetardantTreated Studs,platesandsheathing 2xBlocking(countsfor1hrfire protectionpernds [Floorsheathing4 88 in] NoScale 4 UntreatedLumber Floorframing(solidsawnor engineered Floorsheathing

111 Type+III+Construction+Detail+Example+ 5/8 TypeXGWB 1layerfor1hrrating 2layersfor2hrrating CONTINUE GYPSUMTO BOTTOMOF SHEATHING FireRetardantTreated Studs,platesandsheathing [Floorsheathing4 88 in] 5 UntreatedLumber Floorframing(solidsawnor engineered Floorsheathing

112 Type+III+Construction+Detail+Example+ What+is+being+enforced+in+jurisdictions+ you+are+working+in?+ + +

113 Balconies+ +IBC BalconiesofcombustibleconstructionandnotFRTshall be: Ratedinaccordancew/Table601forfloors OrbeofTypeIV Andshallnotexceed50%ofbldgperimeter Exceptions BalconiesinTypeIII,IVandVcanbeoftypeVconst andshallnothavefireresistanceratingifsprinkler protectionprovided Untreatedwoodispermittedforrailsandguardrails

114 Balconies+ +IBC So. ForTypeIIIorVbalconyoptionsare: 1. Non8combustible nosprinklers/nofirerating 2. FRT nofiresprinklers/nofirerating 3. TypeIV nofiresprinklers/nofirerating 4. Nontreated firesprinkler/nofirerating 5. Nontreated fireratedper601&602/nosprinkler

115 Balconies+

116 Outline+ Mid8riseConstructionOverview MaximizingHeightandArea UnderstandingShrinkage DetailingConsiderations

117 Questions?+ ThisconcludesThe AmericanInstituteof ArchitectsContinuing EducationSystems Course Speaker+Name+ Speakerorganization Speaker address