Detailing)Considerations) for)Multi2Story)Wood) Frame)Buildings

Detailing)Considerations)

for)Multi2Story)Wood)

Frame)Buildings)

Presented(by:(Lisa(Podesto,(PE,(MS(Senior(Technical(Director(

“The(Wood(Products(Council”(is(a(Registered(Provider(with(The(American(Institute(of(Architects(Continuing(Education(Systems((AIA/CES),(Provider(#G516.((!Credit(s)(earned(on(completion(of(this(course(will(be(reported(to(AIA(CES(for(AIA(members.(Certificates(of(Completion(for(both(AIA(members(and(nonQAIA(members(are(available(upon(request.(((

This(course(is(registered(with(AIA(CES(for(continuing(professional(education.(As(such,(it(does(not(include(content(that(may(be(deemed(or(construed(to(be(an(approval(or(endorsement(by(the(AIA(of(any(material(of(construction(or(any(method(or(manner(of(handling,(using,(distributing,(or(dealing(in(any(material(or(product.(___________________________________________

Questions(related(to(specific(materials,(methods,(and(services(will(be(addressed(at(the(conclusion(of(this(presentation.((

Course)Description)

This(seminar(will(provide(an(overview(of(detailing(issues(related(to(the(design(of(fourQ(and(fiveQstory(woodQframe(buildings(under(the(International*Building*Code.((Provided(by(an(expert(in(wood(design(and(engineering,(it(will(cover(common(detailing(choices(related(to(fire(and(life(safety,(such(as(detailing(at(exterior(walls,(as(well(as(balconies(and(shafts.(Examples(of(various(building(configurations(and(site(layouts(will(be(used(to(illustrate(common(detailing(choices.(

Learning)Objectives)

1.  Evaluate(examples(of(midQrise(buildings(with(an(emphasis(on(configurations(and(site(layouts(

(2.  Recognize(common(detailing(used(in(multiQstory(structures(

across(the(country(for(exterior(wall(to(floor(intersections(

3.  Identify(IBC(requirements(for(fire(walls(and(their(impact(on(detailing(choices.(

4.  Discuss(detailing(options(related(to(the(design(of(balconies(and(shafts(in(multiQstory(wood(buildings(

Outline)

•  MidQrise(Configurations(

•  Design(Considerations(•  Fire(Rated(Wall(Assemblies(

Mid2Rise)Construction)Overview)

Walk2up/)Tuck)Under)

Benefits:(

•  Eliminates(need(for(SQ2(parking(garage(

•  Can(be(all(wood(

•  Least(expensive(overall(but(lowest(densification(rates(

First(floor(walk(up(units(with(private(garage(

Wrap2Around))

Benefits:(

•  enhanced(security((

•  Centralized(access(to(parking(

•  Visual(appeal(from(street(

•  More(expensive(than(walk/up(tuckQunder(

•  5(story(yields(60Q80(units/acre((

Walk(up(units(surround(parking(structure(

Podium)

Benefits:(•  Increased(number(

of(stories(•  Accommodates(

MixedQuse(occupancies(

•  Most(expensive(but(can(allow(increased(density(

Multiple(stories(of(wood(over(an(elevated(concrete(deck(

Podium)

4(stories(of(residential(over(podium((parking(or(retail)((

•  60Q80(units/acre(

Inman(Park(Condos,(Atlanta,(GA(Davis(&(Church(

Podium)

5(stories(over(subterranean(parking(

5(stories(over(retail(

AvalonBay(Stadium,(Anaheim,(CA(VanDorpe(Chou(Associates(

Inman(Park(Condos,(Atlanta,(GA(Davis(&(Church(

Podium)

5(stories(over(residential(podium(

Podium)

5(stories(with(mezzanine(+(residential(podium(

120(Union,(San(Diego,(CA(Togawa(Smith(Martin(

Sloped)Sites)

Seattle,(WA(PB(Architects(

Fashion(Valley,(CA(AvalonBay(Communities((

Hotels((RQ1)(

Apartments((RQ2)(

Condominiums((RQ2)(

Student(housing((RQ2)(

Live/work(units((RQ2)(

Assisted(living((RQ4)(

Nursing(homes((IQ2)(

Typical)Mid2rise)Occupancy)

(AQ2)(Restaurants/cafeterias(

(AQ3)(Workout(facilities(

(AQ3)(Meeting(rooms((

(B()Offices((

(M)(Shops((

(SQ2)(Parking((

(SQ1)(Storage(

(B()Offices((

Mixed)Use)Occupancy)

Located(at(woodworks.org(–(design(tools(–(online(calculators(–(Heights(and(Areas(Calculator(

2012)Code)Conforming)Wood)

Available(for(Free(Download:(www.awc.org((((

Outline)

•  Design(Considerations(

•  Structural((Load(Transfer/Serviceability)(•  Acoustic(•  Building(Envelope((•  Constructability(•  Fire(

•  Fire(Rated(Wall(Assemblies(

Structural((•  Direct(bearing/(no(add’l(

hardware(Constructability(•  Framing(can(be(completed(

before(drywall(and(insulation(are(installed(

•  Common(length(studs(

Platform)Framing)

No(Scale(

Structural((•  Additional(hardware/no(direct(

bearing(•  Can(help(minimize(building(

shrinkage(Rated(Assemblies(•  May(accommodate(continuity(

in(exterior(walls(in(Type(III(construction(

Constructability(•  Custom(length(studs(

Semi2balloon)Framing)

Structural)Considerations)

Solution)12)Plain)Unreinforced)Brick2h>30’)

Allows(for(vertical((shrinkage(of(wood((framing(

Veneer(must(be(designed((per(ACI(530(section(2.2(as((plain(unreinforced(masonry(

Anchors/ties(to(be((spaced(a(maximum((of(32”(o.c.(horiz.(And((18”(o.c.(vert.((except((seismic)(

Requires(steel((lintel(at(openings(

Joints(must(allow(for(all(differential((movement((lateral(drift(and((vertical(shrinkage(of(wood(Framing(Etc.).(Weight(of(brick(must(not((be(supported(by(wood(Framing((

Wood(backer(studs(

Brick(goes(into((flexure(when(wall((studs(deflect(

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)

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)

Reinf.(horizontal(bond((beam(or(lintel(units((over(openings(

Spaced(anchors(must(allow((for(all(differential(movement(((lateral(drift,(vertical(shrinkage((of(wood(Framing,(etc.).(Weight((of(brick(must(not(be(supported((by(wood(Framing((

Wood(backer(studs(

Reinforcement((reduces(expansion(and(cracking(

Anchors/ties(are((tied(directly(into((floor(diaphragms(

Veneer(acts(as(complete((unit,(not(as(individual((Segments.(Supports(self((weight(plus(outQofQplane((loads(

#3(or(#4(rebar((typ.)(

Heavier(anchors(are((not(as(prone(to(fire((damage(

4”)nom.)or)greater)

Outline)

Acoustic)Detailing)

Outline)

http://www.fpinnovations.ca/ResearchProgram/AdvancedBuildingSystem/designingQenergyQefficientQbuildingQenclosures.pdf(

Buildings(in(Marine(to(Cold(Climate(Zones(in(North(America(

Resources

Buildings)in)Marine)to)Cold)Climate)Zones)in)North)America)

Chapter)3:)Moisture,)Air)and)Thermal)Control)

•  Building(as(a(System(•  Climate(Zones(•  Interior(Climate,(HVAC(Interaction(•  Critical(Barrier(Concept(•  Control(of(Rainwater(Penetration(•  Control(of(Air(Flow(•  Controlling(Condensation(•  Construction(Moisture(•  Controlling(Heat(Flow(and(Insulation(•  Whole(Building(Energy(Efficiency(•  Computer(Simulation(Considerations(for(WoodQframed(Enclosures(

Resources

Outline)

Case)Study:)University)of)Washington)

UW)West)Campus)Student)Housing)

Location:(Seattle,(WA(

1700(beds(in(3(halls(and(2(apt(bldgs(

$177/sf(

4/5(bldgs(met(2030(challenge((60%(reduction(in(energy(consumption)(

Architect:(Mahlum(Architects(

Engineer:(Coughlin(Porter(Lundeen(

Contractor:(Walsh(Construction(

Case)Study:)Innovations)in)Wood)

Architect:(Cooper(Carry,(The(Preston(Partnership(

Engineer:(Ellinwood(+(Machado,(Pruitt(Eberly(Stone(

Contractor:(FortuneQJohnson(Contracting(

Completed:(2012(

Photo(credit:(Gables(Residential(

Emory)Point)

Location:(Atlanta,(GA(

3(buildings(complete(Q(Luxury(Apt.,(retail,(restaurants(

•  (1)(5(story(Type(III(wood(frame(over(slab(on(grade(

•  (2)(4(stories(of(wood(over(1(story(concrete(podium(

35%(savings((

•  $14/sf((wood(concept)((

•  $22/sf((PT(conc.(Slab(and(frame)(

Stella)Apartments,)

Marina)Del)Ray,)CA)

Architect:(Design(ARC.((Los(Angeles,(CA(Photos:(Lawrence(Anderson,(www.lawrenceanderson.net(

Case)Study:)Maximizing)View)and)Value)With)Wood)

Architect:(PB(Architects(

Engineer:(Yu(&(Trochalakis(

Contractor:(Norcon,(NW(

Completed:(2009(

Photo(Credit:(Matt(Todd(Photography(

Marselle)Condominiums)

Location:(Seattle(WA(

Type(IIIA(condo(complex(

5(Q1/2(stories(of(wood(over(2(stories(of(concrete(

mezzanine(added($250K(cost(but($1M(in(value(

30%(cost(savings(over(concrete(

Time(savings(over(steel(

Outline)

Detailing for Fire Resistance

Different areas of fire design:C b tibilit• Combustibility

• Fireresistance• FireClass• FireClass• FireProtection

Key Differences in Fire Ratings for Construction Types

IIIA IIIB VAExterior wall framing FRT FRT non-FRTExterior wall fire rating 2 hr 2 hr 1 hrFloor assembly fire rating 1 hr 0 hr 1 hrFloor assembly fire rating 1 hr 0 hr 1 hrFire wall rating 3 hr 3 hr 2 hr

Fire Resistance Rating

Basic assumption is that fires begin at the interior andrated wall assemblies are not required from the exteriorrated wall assemblies are not required from the exteriorunless close to another structure.

Interior

FireProtection onInside ofInside ofBuilding

Exterior

Fire Resistance Rating IBCTable 601

Fire Resistance Rating – IBCTable 602Exterior Fire Resistance Rating

Table 601Table 602 establishes requirementsTable 602 establishes requirementsstructures separated by 10’ 30’ they are typically 0 or 1 hour rated

TABLE 602

FIRE SEPARATIONDISTANCE = X (feet)

TYPE OFCONSTRUCTION

OCCUPANCY GROUPH

OCCUPANCY GROUP F1, M, S 1

OCCUPANCY GROUP A, B,

E, F 2, I, R, S 2, Ub

X < 5c All 3 2 1

FIRE RESISTANCE RATING REQUIREMENTS FOR EXTERIOR WALLS BASED ON FIRE SEPARATION DISTANCEa, e

5 < X <10 IA 3 2 1Others 2 1 1

10 < X < 30 IA, IB 2 1 1d

IIB, VB 1 0 0

Others 1 1 1d

X > 30 All 0 0 0For SI: 1 foot = 304.8 mm.a. Load bearing exterior walls shall also comply with the fire resistance rating requirements of Table 601.b For special requirements for Group U occupancies see Section 406 1 2

e. The fire resistance rating of an exterior wall is determined based upon the fire separation distance of the exterior wall and the story in which thewall is located.

b. For special requirements for Group U occupancies see Section 406.1.2c. See Section 705.1.1 for party walls.d. Open parking garages complying with Section 406 shall not be required to have a fire resistance rating.

Fire Resistance Rating – IBC 705.5

ExteriorWallsFire Separation > 10’ – shall be rated for exposure fromp pthe inside in accordance with 601 and 602Fire Separation < 10’ – shall be rated for exposure to bothsides in accordance with 601 and 602

X ’Interior

X < 10’

ExteriorLot

Fire Protection onExteriorWalls When < 30’

Table 601 & 602

Choosing)Fire)Rated)Assemblies)

Tested(assemblies((ASTM(E119)(per(IBC703.2:(•  UL:(http://database.ul.com(((•  Gypsum(Catalog:(www.gypsum.org((•  Other(tools:(www.usgdesignstudio.com(•  AWC(DCA3(•  APA(Fire(Rated(Systems:(

http://www.apacad.org/cad_detail.cfm?id=2((

Alternate(Methods(per(IBC703.3(•  Deemed(to(comply(tables(per(IBC721(•  Calculated(Fire(Resistance(per(IBC722(

Outline)

•  Overview(•  Exterior(Walls(•  Fire(Walls(•  Fire(Barriers(•  Fire(Partitions(•  Balconies(

Fire2resistance)Rated)Wall)Assemblies)

Tested(under(a(standardized(test(fire(exposure(for(a(given(duration(to:((

1.  Prevent(the(passage(of(flame(and(temperature(rise(from(one(side(to(the(other(

2.  Continue(to(provide(vertical(structural(support(when(exposed(to(fire(and(elevated(temperatures((

))))))Fire)Confinement ) ))))Structural)Performance)

There(are(five(basic(types(of(fireQresistance(rated(wall(assemblies:(

•  Light(Frame(Bearing(Walls((IBC(704.4.1)(

•  Exterior(Walls((IBC(705)(

•  Fire(Wall(or(Party(Wall((IBC(706)(

•  Fire(Barrier((IBC(707)(

•  Fire(Partition((IBC(708)(

Light)Frame)Bearing)Walls)(IBC)704.4.1))

Required(fireQresistance(is(the(greater(of:(•  FireQresistance(rating(found(in(Table(601(based(on(the(

building(type(of(construction.((•  The(required(fireQresistance(rating(required(for(fireQ

resistanceQrated(assemblies(supported(by(the(structural(wall.((

www.awc.org(FAQ:((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)

Exterior)Walls)(IBC)705))

Exterior(walls(have(to(be(rated(to(which(ever(is(greater(of….((•  Table(601:(The(fireQresistance(rating(required(to(

maintain(vertical(structural(support(and(is(based(on((•  the(type(of(construction((•  whether(or(not(the(wall(is(load(bearing(

•  Table(602:(The(fireQresistance(rating(required(to(prevent(spread(of(fire(from(the(inside(to(the(outside((or(outside(to(inside)(and(is(based(on((•  type(of(construction((•  occupancy(group(•  fire(separation(distance((FSD)(associated(with(the(

exposure(of(the(exterior(wall(

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,(beams(or(walls,(that(support(a(rated(exterior(wall(must(be(fire(–resistance(rated(not(less(than(the(rating(of(the(supported(wall((IBC((704.1()(

Fire)Resistance)Rating)–)IBC)705.5))

Exterior)Walls)

Fire(Separation(>(10’(–((shall(be(rated(for(exposure(from(the(inside(in(accordance(with(601(and(602(Fire(Separation(<(10’(–(shall(be(rated(for(exposure(to(both(sides(in(accordance(with(601(and(602((

Interior)

Exterior(

Fire(Protection(on(Exterior(Walls((When(<(30’(

(X(<(10’(

Table(601(&(602(

2"HOUR EXTERIOR WALL

FRAMING AT 16" O.C.. MIN. 2 X 4

1 LAYER 5/8" FIBERGLASS MAT GYPSUM SHEATHING

STRUCTURAL WOOD PANEL(S)

WHERE REQUIRED FOR SHEAR

2"HOUR RATING PER UL DESIGN NO. U371

EXTERIOR CEMENT PLASTER, MIN. THICKNESS

3/4" TO FACE OF LATH

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

2)HR)Exterior)Wall)Assembly)–)Type)III)

Common(issues(with(tested(assemblies:(

•  Assembly(AsymmetryQ(separate(assemblies(for(each(side(

Adding)lateral)resistance)

Common(issues(with(tested(assemblies:(

•  Inclusion(of(wood(structural(panel(–(ESR2586(

•  FRT(may(also(be(substituted(for(untreated(wood(

1hr)rated)floor)assemblies)–)Type)IIIA/VA)

Common(issues(with(UL(approved(assemblies:(

•  Shallow(Floor(depthQ((

•  Use(prescriptive(assemblies(Q(IBC(

721.1(2)(assembly(

14Q1.1((

•  Or(use(the(CAM(

method(in(IBC(722((

No(Scale(

•  5/8”(Type(X(GWB(•  1(layer(for(1hr(rating(•  2(layers(for(2hr(rating(

•  Fire(Retardant(Treated(• Wall(studs,(plates(and(sheathing(((

• Untreated(Lumber(•  Floor(framing((solid(sawn(or(engineered)(

•  Floor(sheathing(((

Type)III)Construction)

No(Scale(

•  Fire(Retardant(Treated(• Wall(studs,(plates(and(sheathing(((

Continuity)of)FRT)

No(Scale(

•  Fire(Retardant(Treated(• Wall(tuds,(plates(and(sheathing(•  [2x(Blocking((counts(for(1hr(fire(protection(per(NDS(16.2.1)](

•  [Floor(sheathing(4’Q8’(in](((

Type)III)Construction)Detail)Example)

No(Scale(

•  Fire(Retardant(Treated(•  Studs,(plates(and(sheathing(•  2x(Blocking((counts(for(1hr(fire(protection(per(NDS(16.2.1)(

•  [Floor(sheathing(4’Q8’(in](((

CONTINUE(GYPSUM(TO(BOTTOM(OF(SHEATHING(

•  Fire(Retardant(Treated(•  Studs,(plates(and(sheathing(•  [Floor(sheathing(4’Q8’(in](((

AvalonBay)Stadium)

Location:(Anaheim,(CA(

251(Apts.,(13K(sf(retail/restaurant(

Type(III(modified(

50%(of(their(projects(are(podium(

SemiQballoon(framed(at(exterior(walls(

Case)Study:)Wood)Buildings)Aim)High)

Architect:(Withee(Malcolm(Architects(

Engineer:(VanDorpe(Chou(Associates(

Developer/Contractor:(AvalonBay(Communities(

Photo(credit:(Arden(Photography(

Carbon)Case)Study:)High)Density)Ava

ay(Stadium

What)is)being)enforced)in)jurisdictions)

you)are)working)in?)

Outline)

Fire)wall))))))))))))))))

(IBC)706))

• Divides(structure(into(separate(buildings(

• Continuous(from(foundation((or(top(of(three(hour(podium)(to(or(through(roof(

• Structural(stability(required((to(allow(collapse(on(either(side(from(fire(without(causing(collapse(of(fire(wall(

• Special(requirements(at(roof(and(intersection(with(exterior(walls(,(at(horizontal(projecting(elements(and((between(stepped(buildings(

• Required(to(be(of(nonQcombustible(construction((except(in(type(V(construction(

• 2(to(4(hour(rated((Table(706.4)(

Fire)Barrier))))))))))

(IBC)707))

• Designed(to(restrict(the(spread(of(fire(with(continuity(through(the(building(

• Divides(structure(into(fire(areas,(and(fire(barriers(are(required(for(various(purposes(such(as(shaft(enclosures,(exit(enclosures,(atrium(separation,(occupancy(separations,(and(control((or(incidental(use(areas.(

• Supported(by(construction(of(equal(fire(resistanceQrating((except(for(incidental(use(areas(in(type(IIB,(IIIB(and(VB(construction)(

• 1(to(4(hour(rated((table(707.3.10)(

Fire)Partition))))

(IBC)708))

• Separates(dwelling(units,(sleeping(areas,(corridors,(and(tenant(spaces.(

• May(terminate(at(the(lower(side(of(a(fire(–resistance(rated(floor/ceiling/roof(assembly(

• In(most(instances(fire(partitions(are(not(required(to(be(supported(by(fire(resistanceQrated(construction(in(type(IIB,(IIIB(and(VB(construction((section(708.4)((

• Rated(1(hour(or(less((IBC(section(708.3)(

Fire)Walls)2)706)

Used:(

•  To(create(separate(buildings(

•  As(a(Party(Wall((lot(line)(

Structural(Stability(

•  Allow(for(structural(collapse(on(either(side(while(wall(stays(in(place(

•  OR(double(wall(per(NFPA(221(

Fire)Walls)

Design(Options(NFPA(221:(

1.  Single(wall(

2.  Double(Wall(

3.  Cantilevered(Wall(

Fire)Walls)–)Diaphragm)Continuity)

Fire)wall)Detailing)

CAD(&(Revit(Details:(www.woodworks.org(((

3"HOUR FIRE WALL AT FLOOR/CEILING

3"HR. ASSEMBLY: 1 5/8" METALSTUDS WITH 3 LAYERS 1/2" TYPE 'X'

GYP. BD. EACH SIDE

3"HOUR FIRE CAULKING

1" AIR GAP

RESILIENT CHANNELS

2 X 4 STUD WALL EACH SIDE, WITHSTRUCTURAL WOOD PANELS AS

REQUIRED FOR SHEAR AND 1 LAYER5/8" TYPE 'X' GYP. BD.

CONTINUOUS 13 1/2" WIDE 14 GA. GALV.SHT. METAL

CONTINUOUS 16 GA. TRACK TOP ANDBOTTOM

FIRE SAFING

CONTINUOUS 16 GA. COMP. CHANNEL

WOOD TRUSS FRAMING WITHOUT WOOD PANEL DIAPHRAGM RUNNING THROUGH FIRE WALL3"HOUR FIRE WALL AT FLOOR/CEILING

3"HR. ASSEMBLY: 1 5/8" METALSTUDS WITH 3 LAYERS 1/2" TYPE 'X'

GYP. BD. EACH SIDE

CONTINUOUS STRUCTURAL WOODPANELS " USE FIRE"TREATED PANELS

THROUGH WALL CAVITY¹

¹CONSULT LOCAL JURISDICTION HAVING AUTHORITY FOR ACCEPTANCE OF FIRE"TREATED WOODPANELS RUNNING THROUGH 3"HOUR ASSEMBLY IN THIS APPLICATION.

RIM JOIST WITH SOLID BLOCKING

3"HOUR FIRE CAULKING

1" AIR GAP

RESILIENT CHANNELS

2 X 4 STUD WALL EACH SIDE, WITHSTRUCTURAL WOOD PANELS AS

REQUIRED FOR SHEAR AND 1 LAYER5/8" TYPE 'X' GYP. BD.

I"JOIST FRAMING WITH WOOD PANEL DIAPHRAGM RUNNING THROUGH FIRE WALL

Fire)Wall)Assemblies)

IBC)706.3)–(Fire(walls(shall(be(of(any(approved(nonQcombustible(materials.(

(Exception:)Buildings(of(Type(V(construction(

2)HR)Fire)Wall–)Type)V)

2"HOUR FIRE WALL ASSEMBLY

2 1/2" METAL STUDS AT 24" O.C.

2 LAYERS 5/8" TYPE 'X' GYP. BD. ON EACH SIDE OF METAL STUDS

WOOD STRUCTURAL PANELS WHERE REQUIRED FOR SHEAR

2"HOUR RATING PER GA FILE NO. WP 1548

WOOD STUD WALLS ON EITHERSIDE OF FIRE WALL

INTERIOR OR EXTERIOR FINISH AS REQUIRED

BATT INSULATION (OPTIONAL)

http://www.usgdesignstudio.com/wallQselector.asp?framingType=18708&bldgSystem=18620((((((((((((((((

CAD(&(Revit(Details:(www.woodworks.org((

3hr)Fire)Wall)Assemblies)–)Type)III)

3"HOUR FIRE WALL ASSEMBLY

1 5/8" METAL STUDS AT 24" O.C. MAX.

3 LAYERS 1/2" TYPE 'X' GYP. BD. ON EACH SIDE OF METAL STUDS

WOOD STRUCTURAL PANELS WHERE REQUIRED FOR SHEAR

3 HOURS PER UL DESIGN NO. U435

WOOD STUD WALLS ON EITHERSIDE OF FIRE WALL

INTERIOR OR EXTERIOR FINISH AS REQUIRED

BATT INSULATION (OPTIONAL)

Other(options:(•  NFPA(221(6.5.1(((

Outline)

Fire)Barriers)–)IBC)707)

Supported(by(assembly(of(equal(or((greater(fire(resistance((with(exceptions(when(required((for(separating(incidental(use(areas(in(type(IIB,(IIIB(and(VB(construction)(Commonly(used(in:(•  Shaft(enclosures(•  Interior(exit(stairway(•  Exit(stairway(enclosures(•  Exit(passageways(•  Incidental(uses((IBC(509)(•  Occupancy(separations(•  Creating(separate(fire(areas(

2012(IBC(Code(&(Commentary(

Shaft)Walls)

Wood(Design(Focus:(Volume(22,(Issue(3(by(Smith(

Elevator)Shaft)Wall)

Wood(Design(Focus:(Volume(22,(Issue(3(by(Smith(

Interior)Exit)Stairway)Enclosures)

Outline)

Balconies)–)IBC)1406.3)

Balconies(of(combustible(construction(and(not(FRT(shall(be:(•  Rated(in(accordance(w/(Table(601(for(floors(•  Or(be(of(Type(IV((•  And(shall(not(exceed(50%(of(bldg(perimeter(Exceptions(•  Balconies(in(Type(III,(IV(and(V(can(be(of(type(V(const(

and(shall(not(have(fire(resistance(rating(if(sprinkler(protection(provided(

•  Untreated(wood(is(permitted(for(rails(and(guardrails((

Balconies)–)IBC)1406.3)

So….(

For(Type(III(or(V(balcony(options(are:(

1.  NonQcombustible(–(no(sprinklers/no(fire(rating(

2.  FRT(–(no(fire(sprinklers/no(fire(rating(

3.  Type(IV–(no(fire(sprinklers/no(fire(rating(

4.  Non(treated(–(fire(sprinkler/no(fire(rating(

5.  Non(treated(–(fire(rated(per(601(&(602/(no(sprinkler(

Balconies)

Questions?)

This(concludes(The(American(Institute(of(Architects(Continuing(Education(Systems(Course( Lisa)Podesto,)PE,)MS)

WoodWorks(lisa@woodworks.org(

Detailing)Considerations) for)Multi2Story)Wood) Frame)Buildings

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