Usg Gypsum Board Arc Spec en 09260 092116

5/23/2018 Usg Gypsum Board Arc Spec en 09260 092116

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General SpecificationNotes:

References in blueare general indicators to the specifier.References in redrelate to fire-rated assemblies and/or code

related issues, if not applicable, delete.References inpurpleare indicators of a discontinued product.

SECTION 09260 / 09 21 16 Gypsum BoardAssembliesUSG ry!all

Product Specification

G"#SU$ BOA% ASSE$B&IES ON $ETA& '%A$ING

PART 1 - G!RA"

1.1 S#$$AR%

A. &escription of 'or(: 'or( of this section includes, but is not limited to, the follo)ing:1. G*psum board and accessories+. eneer plaster. $etal studs and furring. $etal shaft)all s*stems. $etal suspension s*stems0. Sound-rated construction and accessories. G*psum board finishing2. Trim and accessories

1.+ R"AT& '3R4 SP5676& "S'8R

A. See Section 919 5RA$65 T6" for tile facing on cement bac(er board.

;. See Section 919 A53#ST65A" 56"6!GS for suspended acoustical ceilings.

5. See Section 999 PA6!T6!G A!& 76!6S86!G for g*psum board prime and finishcoats.

1. S#;$6TTA"S

A. Product &ata: Submit manufactureruired s*stem.

1. S%ST$ R?#6R$!TS

A. Performance Re>uirements: 7abricate and install s*stems as indicated but not lessthan that re>uired to compl* )ith AST$ 5 under the follo)ing conditions:1. G*psum board partitions:

a. Standard s*stems: $a@imum deflection of l/+9 of partition height.b. S*stems to receie )ater resistant g*psum board or bac(er board:

$a@imum deflection of l/09 of partition height.

USG SPECLINK 09260 / 09 21 16 (1) Gypsum Assemblies on e!"l #$"min%


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+. 5ait* shaft)all s*stems: 'ithstand minimum positie and negatie pressure of psf.

. 6nterior suspended ceilings and soffits: $a@imum deflection of l/09 of distancebet)een supports.

. @terior soffits: 'ithstand minimum positie and negatie pressure of +9 psf )ithma@imum deflection of l/09 of distance bet)een supports.

(((((((((((((((( Seismi) Complia*)e (((((((((((((((((((((((((

. !onstructural components that are permanentl* attached to structures and theirsupport attachments, shall be designed and constructed to resist the effects ofearth>ua(e motions in accordance to local =urisdiction.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBTall 'alls

Partitions e@ceeding 9 feet in height are considered tall. 'hen these taller than normalpartition heights are re>uired, consideration must be gien to length restrictions formanufacturing and shipping steel studs, scaffolding, stud placement, and deflection.

#se double structural studs bac(-to-bac( + inches on center. Attach studs bac( to bac( )ithscre)s appro@imatel* feet on center.

7or -psf )ind load, +9 gauge runner trac( is recommended. The fasteners should hae acapacit* of 99 pounds in single shear and bearing. 7or 19-psf )ind load, 12 gauge runnertrac( attached )ith fasteners )ith 99 pound single shear and bearing is recommended. See#SG Gypsum Construction Handbookfor additional information.BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

;. 7ire Resistance Ratings: 'here fire resistance classifications are indicated, proide

materials and application procedures identical to those listed b* #" or testedaccording to AST$ 11 for t*pe of construction sho)n.

5. Acoustical Ratings: 'here sound ratings are indicated, proide materials andapplication procedures identical to those tested b* manufacturer to achiee SoundTransmission 5lass CST5D scheduled or indicated in accordance )ith AST$ 9.

1. ?#A"6T% ASS#RA!5

A. Reference Standards:1. Applicable re>uirements of AST$ 5 for installation of steel framing.+. 6nstall g*psum board in accordance )ith applicable re>uirements and

recommendations of G*psum Association GA +10, ERecommendedSpecifications for the Application and 7inishing of G*psum ;oardE e@cept formore stringent re>uirements of manufacturer.

. Appl* acoustical sealant in accordance )ith applicable re>uirements of AST$51.

1.0 &"6R%, ST3RAG A!& 8A!&"6!G

A. &elier*:



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1. &elier material to site promptl* )ithout undue e@posure to )eather.+. &elier in manufactureruirements:1. &o not install g*psum board )hen ambient temperature is belo) 9F7.+. 7or adhesie attachment of g*psum board, and for finishing of g*psum board,

maintain ambient temperature aboe F7 from one )ee( prior to attachment or=oint treatment, and until =oint treatment is complete and dr*.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB7or Retrofits H 8ealthcare Re>uirements )ith "o)-&ust missions:S8TR354I ;rand Plus J read*-mi@ed light)eight all purpose =oint compound )ith dustcontrolBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB1.2 A"TR!AT 53!STR#5T63! 'AST &6SP3SA"

A. Reuse:1. Separate clean )aste dr*)all pieces from contaminants for landfilling or

rec*cling. &o not include in*l-faced, mold-resistant or asphalt impregnatedg*psum boards. PuleriKe and appl* to site soil in accordance to landscapespecifications. Protect scrapes and puleriKed material from moisture andcontamination. Alternate to on-site soil amendment, )or( to suppl* local farming

granular material for their use.

;. Rec*cle:1. Separate clean )aste dr*)all pieces from contaminants for landfilling or reuse.

'or(ing )ith local )aste hauler and local dr*)all manufacturer, proide properstorage of )aste for pic(up and return. Protect scrapes material from moistureand contamination.

PART + - PR3TS

+.1 PR3TS A!& $A!#7A5T#RRS

A. G*psum ;oard and Accessories: "isted products establish standard of >ualit* andare manufactured b* #nited States G*psum 5ompan* C#SGD, 5hicago, 6".

;. Steel 7raming and 7urring: 5ompan* acceptable to installer+

5. Grid Suspension Assemblies: "isted products establish standard of >ualit* and aremanufactured b* #nited States G*psum 5ompan* C#SGD, 5hicago, 6".

+.+ ;3AR& $ATR6A"S

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A. G*psum ;oard:1. AST$ 510 CSection D, regular t*pe Le@cept )here T*pe M fire-resistant t*pe is

indicated or re>uired to meet #" assembl* t*pesN.+. dges: Tapered.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBS,EET%OC-. bra*d ypsum pa*els hae long edges tapered on the face side to form ashallo) channel for =oint reinforcement.

S,EET%OC-. bra*d ypsum pa*els S Ede hae an e@clusie tapered rounded edgedesigned to help minimiKe ridging or beading and other =oint imperfections and helpcompensate for e@tremes of temperature and humidit* during construction. The S' s*stemproduces a stronger =oint than )ith regular g*psum panels. Setting-t*pe =oint compound isrecommended )ith this shape edge. @cept for the rounded edge, S' Panels are taperedli(e, and other)ise identical to, regular tapered-edge g*psum panels.

S,EET%OC-. bra*d $O& TOUG, ypsum pa*elshae a noncombustible, moisture-and mold-resistant g*psum core that is encased in moisture- and mold-resistant, 199 percentrec*cled green face and bro)n bac( papers. The panels feature tapered long edges for eas*finishing. The /2O 76R53& and 1/+E 76R53& 5 5ore panels are #" 5lassified for fireresistance CT*pe MD.

S,EET%OC-. bra*d $O& TOUG, A% ypsum pa*els)ere designed and tested tooffer greater resistance to surface indentation and impact damage than standardS8TR354 g*psum panels. These abuse-resistant g*psum panels are a lo)-costalternatie to other s*stems for partitions that re>uire greater impact resistance. S8TR354$3"& T3#G8 AR g*psum panels hae a noncombustible, moisture- and mold-resistant corethat is encased in moisture- and mold-resistant, 199 percent rec*cled green face and bro)nbac( papers. The face paper is folded around the long edges to reinforce and protect the core,

and the ends are s>uare cut and finished smooth. "ong edges of panels are tapered, allo)ing=oints to be reinforced and concealed )ith a #SG =oint treatment s*stem.

'IBE%OC-. bra*d A% a*d 3,I pa*elsare high-densit* paperless g*psum and cellulose )allpanels )ith long edges tapered to form a shallo) channel for =oint reinforcement. Setting-t*pe

=oint compound is re>uired )ith these panels. /2O 76;R354 ;rand Panels can be used inlieu of T*pe-M panels in all #SG fire rated listings.( #lease *o4e 45a4 45e 'ibero) pa*els belo* 4o AST$ C1278 C1629+BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

. Thic(ness: 1/ L/2N LN L/2N L/N inch, unless other)ise indicated CLN L/2N onl*for 76;R354 panelsD.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBT*pical thic(ness for different applications include:

/2 inch or / inch thic( for commercial installations inch thic( for single-la*er application in residential construction/2 inch thic( applied principall* in double )all s*stem oer )ood framing and inremodeling )or(.1/ inch thic( used as base la*er for improing sound control in double la*er partitions, foruse oer old )all and ceiling surfaces and for forming cured surfaces )ith short radii.

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a. 'here cured g*psum board construction is indicated, use 1/ inch thic(fle@ible facing board.

. Acceptable products:a. T*pical partitions and ceilings: >uialent to S8TR354I brand S',

76R53&I or 76R53&I E5E 5ore g*psum panels b* #SG.b. 3R Ldepends on edge condition optionN: >uialent to S8TR354I

brand Regular, 76R53&I or 76R53&I E5E 5ore g*psum panels b*#SG.

c. Acceptable product for fire-rated )alls: >uialent to #"TRA53&I 5ore,/ inch thic(, b* #SG.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBS,EET%OC-. bra*d 'I%ECOE. Core ypsum pa*elsmeet the definition of a T*pe Mg*psum board for fire-rated assemblies in the G*psum Association 7ire Resistance &esign$anual. dges: S' tapered or tapered.

S,EET%OC-. bra*d 'I%ECOE. C Coreypsum pa*elsproide improed fire protectionoer standard 76R53& panels due to addities that enhance the integrit* of the core underfire e@posure. 5ompl* )ith T*pe M re>uirements.

S,EET%OC-. bra*d $O& TOUG, 'I%ECOE. a*d 'I%ECOE. C Core ypsumpa*elshae a noncombustible, moisture- and mold-resistant g*psum core that is encased inmoisture- and mold-resistant, 199 percent rec*cled green face and bro)n bac( papers. Thepanels feature tapered long edges for eas* finishing. The /2O 76R53& and 1/+E76R53& 5 5ore panels are #" 5lassified for fire resistance CT*pe MD.

S,EET%OC-. bra*d $O& TOUG, A% 'I%ECOE. Core ypsum pa*els)eredesigned and tested to offer greater resistance to surface indentation and impact damage thanstandard S8TR354 g*psum panels. These abuse-resistant g*psum panels are a lo)-cost

alternatie to other s*stems for partitions that re>uire greater impact resistance. S8TR354$3"& T3#G8 AR g*psum panels hae a noncombustible, moisture- and mold-resistant corethat is encased in moisture- and mold-resistant, 199 percent rec*cled green face and bro)nbac( papers. The face paper is folded around the long edges to reinforce and protect the core,and the ends are s>uare cut and finished smooth. "ong edges of panels are tapered, allo)ing

=oints to be reinforced and concealed )ith a #SG =oint treatment s*stem. The /2O 76R53&5ore panels are #" 5lassified for fire resistance CT*pe MD.

S,EET%OC-. bra*d U&T%ACOE Core ypsum pa*els, proide 1, +, and hour fireratings )ith fe)er la*ers of g*psum panels than are usuall* re>uired )hen used in approeddesigns.

S,EET%OC-. bra*d $O& TOUG, U&T%ACOE. Core ypsum pa*elshae a non-combustible, moisture- and mold-resistant g*psum core that is encased in moisture- and mold-resistant, 199 percent rec*cled green face and bro)n bac( papers. The panels featuretapered long edges for eas* finishing. The /E #"TRA53& 5ore panel is #" 5lassified as tofire resistance. 3ne la*er of /E #"TRA53& 5ore panels ma* be substituted for t)o la*ersof /2O 76R53&I 5ore panels in man* #" "isted assemblies. Refer to the #" 7ireResistance &irector* for details.BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

USG SPECLINK 09260 / 09 21 16 () Gypsum Assemblies on e!"l #$"min%


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d. Acceptable product for cured )alls: 1/E 7le@ible G*psum Panels.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBS,EET%OC-. bra*d 1/ i*)5 :le;ible ypsum pa*els bend to fit tight cures )ithout)etting. These 1/ inch panels are much more fle@ible than standard S8TR354I panelsof the same thic(ness.


e. 'here foil-bac(ed g*psum board is indicated: >uialent to S8TR354Ibrand S' 7oil-;ac(, 76R53&I or 76R53&I E5E g*psum panels b*#SG. 3R S8TR354I brand Regular 7oil-;ac(, 76R53&I or76R53&I E5E 53R g*psum panels b* #SG.

f. #se g*psum board and =oint compound )ith little or no 35s andformaldeh*de emissions. G*psum board shall hae a minimum of Q Post-consumer and +9Q Post-industrial Cnation-)ide aerage for compan*D asdefined b* 7T5 C7ederal Trade 5ommissionD b* #SG.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBS,EET%OC-. bra*d :oiluired to meet #" assembl* t*pes.

+. dges: Tapered.. Thic(ness: /2 LN inch, unless other)ise indicated.. Acceptable products: >uialent to Sheetroc( ;rand a4er


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The 'ater-Resistant G*psum ;oard product is no longer aailable. Please see the $old H$oisture categor*.BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

5. $oisture H $old Resistant L7ormerl* 'ater-Resistant g*psum panelN:1. AST$ 510 CSection D, regular t*pe e@cept )here T*pe M fire-resistant t*pe is

indicated or re>uired to meet #" assembl* t*pes.+. dges: Tapered.. Thic(ness: L1/+N L/2N L/N inch.. Acceptable products: Sheetroc(I brand $old ToughJ 7irecode CT*pe MD,

7irecodeI 5 5ore or #"TRA53&I 5ore g*psum panels b* #SG.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBS,EET%OC-.bra*d $O& TOUG, ypsum pa*elshae a noncombustible, moisture-and mold-resistant g*psum core that is encased in moisture- and mold-resistant, 199 percent

rec*cled green face and bro)n bac( papers. The panels feature tapered long edges for eas*finishing. The /2O 76R53&I and 1/+E 76R53&I 5 5ore panels are #" 5lassified for fireresistance CT*pe MD.

S,EET%OC-. bra*d $O& TOUG, A% ypsum pa*els)ere designed and tested tooffer greater resistance to surface indentation and impact damage than standardS8TR354 g*psum panels. These abuse-resistant g*psum panels are a lo)-costalternatie to other s*stems for partitions that re>uire greater impact resistance. S8TR354$3"& T3#G8 AR g*psum panels hae a noncombustible, moisture- and mold-resistant corethat is encased in moisture- and mold-resistant, 199 percent rec*cled green face and bro)nbac( papers. The face paper is folded around the long edges to reinforce and protect the core,and the ends are s>uare cut and finished smooth. "ong edges of panels are tapered, allo)ing

=oints to be reinforced and concealed )ith a #SG =oint treatment s*stem.

S,EET%OC-. bra*d $O& TOUG, U&T%ACOE. Core ypsum pa*elshae a non-combustible, moisture- and mold-resistant g*psum core that is encased in moisture- and mold-resistant, 199 percent rec*cled green face and bro)n bac( papers. The panels featuretapered long edges for eas* finishing. The /E #"TRA53& 5ore panel is #" 5lassified as tofire resistance. 3ne la*er of /E #"TRA53& 5ore panels ma* be substituted for t)o la*ersof /2O 76R53& 5ore panels in man* #" "isted assemblies. Refer to the #" 7ireResistance &irector* for details.

&imi4a4io*s: 6n remodeling applied directl* to studs. Panels should not be installed oer aapor retarder or on a )all acting as a apor retarder unless it )ill not be tiled or finished )ithan imperious paint. #a*els are *o4 i*4e*ded :or use i* areas sub=e)4 4o )o*s4a*4

mois4ure su)5 as 4ub a*d s5o!er e*)losures a* s5o!ers a*d )ommer)ial :oodpro)essi* R354I brand cement boards are recommended for these uses.BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

&. Shaft)all:1. "iner boards:

a. AST$ 5+, T*pe S"M.b. dges: ;eeled.c. Thic(ness: 1 inch.

USG SPECLINK 09260 / 09 21 16 ()) Gypsum Assemblies on e!"l #$"min%


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d. Acceptable product: >uialent to S8TR354I g*psum liner panels b*#SG.

+. 7ace boards:a. AST$ 510 CSection D, T*pe M.b. Thic(ness: /2 LN inch, unless other)ise indicated.c. Acceptable product: : >uialent to S8TR354I 76R53&I 5 5ore

and 76R53&I 5ore g*psum panels b* #SG.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB#SG Shaft 'alls proide up to -hour fire resistance and sound ratings to 1 ST5. The*resist intermittent lateral loads up to 1 psf also resist fatigue failure under c*clic lateralloading. #SG 5ait* Shaft 'alls are non-loadbearing g*psum board partition assembliesdesigned for erection from outside the shaft at each floor.

S,EET%OC-. bra*d ypsum li*er pa*elsare installed erticall* bet)een steel -Runnersattached to floor and ceiling. Panel edges are inserted into speciall* formed 5-8 Studsspaced +E on center. The +-hour shaft )all is completed )ith double-la*er inch thic(g*psum panels and a #nited States G*psum 5ompan* =oint s*stem, or )ith g*psum base andeneer finish applied to one side. 'here both sides of the )all must be finished, single-la*erpanels are applied to each side of studs. A 1-hour assembl* is obtained )ith single-la*er /2inch thic( face panels.

S,EET%OC-. bra*d $old Tou5ypsum li*er pa*els hav e a n on co m b u s t i b l e,m oi st u r e - an d m ol d - res is ta n t g yp s u m co re t ha t is en ca s ed in m o is t u r e- an d m ol d -

res is ta n t , 10 0 p er ce n t re cy cl e d bl ue fac e an d ba ck pa pe r s. Th e p an el s ar e UL

Cl as si f i e d as t o f ir e r es is t a n c e T yp e !L" # a nd fe at u r e d ou b l e b ev e l e d e dg e s fo r

ea sy ins ta ll a ti o n . $a ne l m a y b e su bs t i t u t e d for !%&&T '( C) gy ps u m li ne r pa ne ls in

all !%&& T' (C ) s ha f t * al l a nd a re a s ep a r a ti o n * al l s ys t e m s .

#SG 5ait* Shaft 'all S*stems hae been designed and tested using accepted engineeringpractices )ith deflection criteria of "/1+9, "/+9 and "/09 clear partition heights. The* arecoered b* three model building codes under !R +2.

#SG 5ait* Shaft 'all S*stem is the onl* )all for )hich a #" smo(e and fire damper test isaailable.BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

. @terior Soffit ;oard:1. $anufactureruialent to S8TR354I 76R53&I 5ore e@teriorg*psum ceiling board b* #SG.

7. 5ement ;ac(er ;oard:1. Aggregated Portland cement board )ith )oen glass fiber mesh facing

compl*ing )ith A!S6 A112..+. Thic(ness: L/2N inch.. Acceptable product and manufacturer: &uroc( 5ement ;oard b* #SG.

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BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBR354 5ement ;oard is apor permeable and does not deteriorate in the presence of)ater. 6t is used as a substrate for tile or eneer plaster. 6f a apor retarder or )aterproofconstruction is specified, a separate barrier must be applied oer or behind R354 5ement;oard.

7or steam rooms and saunas )here temperatures e@ceed 1+9F7 for e@tended periods, set tile)ith dr*-set or late@-Portland cement mortar do not use organic adhesie.

6$PR6A" 7inish Plaster applied oer &6A$3!& eneer ;asecoat Plaster can be applied oerR354 5ement ;oard to proide a high-impact resistant )all. R354 5ement ;oardsurface and =oint treatment must receie #SG Plaster ;onder before application of basecoatplaster.BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

G. eneer Plaster Partitions:1. ;ase: $anufactureruialent to&6A$3!& ;asecoat b* #SG.

. Plaster finish coat: Read*-mi@ed material.a. Smooth tro)el finish: Add )ater in accordance )ith manufactureruialent to 6$PR6A" 7inish b* #SG.

(((((((((((((((((((((((((((((((((((((((O%((((((((((((((((((((((((((((((((((((b. 7loat finish: Add )ater and aggregate in accordance )ith manufactureruialent to &6A$3!& 6nterior 7inish b*#SG.

+. $TA" 7RA$6!G A!& 7#RR6!G $ATR6A"S

A. $etal Studs and Runners:1. AST$ 50, E5E shaped, gauge:

a. Proide gauge as indicated for studs runner gauge as recommended b*stud manufacturer.

((((((((((((((((((((((((((((((((((O%((((((((((((((((((((((((((((((((((((((((((b. Proide + gauge studs, e@cept as other)ise indicated or specified. Proide

heaier gauge if re>uired.c. At door Land borro)ed lightN frames, proide C+D + gage minimum studs at

each =amb. 'here )all is indicated or specified to be t*picall* framed )ith+9 gauge studs, proide C+D +9 gauge studs at each =amb.

d. Proide +9 gauge studs at )alls to receie cement bac(er board L,N LandN)ater resistant g*psum board )ith ceramic tile facing.

e. Proide runner gauge as recommended b* stud manufacturer.+. &epth of sections: As indicated.



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. 5orrosion protection: G9 hot-dipped galaniKed coating per AST$ A+.

;. Shaft 'all Supports:1. 5onform to AST$ A0, Grade A, )ith G9 hot-dipped galaniKed coating per

AST$ A+.+. Studs:

a. Shape: E58E, O or O or as standard )ith manufacturer.b. Gauge: As re>uired to fulfill performance criteria, minimum + gauge.

Proide +9 gauge for =amb and lintel components.c. SiKe: As indicated.d. runners: + gauge, siKe as re>uired for coordination )ith studs.e. amb struts: +9 gauge )ith inch bac( leg for use at eleator frames.

5. $etal 7urring 5hannels:1. 8at-shaped:

a. AST$ 50, /2 inch high, + gauge, )ith G9 hot-dipped galaniKedcoating per AST$ A+.

b. Proide +9 gauge at furring to receie tile bac(er board.c. Acceptable products: &'5-+ for E and /2E g*psum board and &'5-+9

b* #SG.+. -shaped: AST$ 50, depths as indicated, + gauge minimum, )ith G9 hot-

dipped galaniKed coating per AST$ A+.. Resilient: $anufacturerual to 19@ calculated loadsN.

5. LPost-tensioned 5oncrete Slabs:1. 7or inserts placed in post-tensioned concrete )or(, maintain inch clearance

bet)een inserts and prestressing strands.+. 6f insert is in conflict )ith strand, insert must be moed to aoid strand. &o not

moe strands to aoid inserts.N

&. 8angers:1. Steel )ire or rods, siKes to compl* )ith re>uirements of AST$ 5 for ceiling or

soffit area and loads to be supported.+. 'ire: AST$ A 01, soft, 5lass 1 galaniKed.. Rods and flats:

1. $ild steel components.+. 7inish: GalaniKed or painted )ith rust-inhibitie paint for interior )or(

galaniKed for e@terior )or(.

. 7raming S*stem:



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1. $ain runners:1. 5old-rolled, E5E shaped steel channels, 10 gauge minimum.+. 7inish: GalaniKed )ith G9 hot-dip galaniKed coating per AST$ A+ Lfor

e@terior )or(N galaniKed or painted )ith rust-inhibitie paint for otherinterior )or(.

. 7orm to re>uired radius at cured ceilings.

+. 5ross furring: 8at-shaped steel furring channels, AST$ 50, /2 inch high, +gauge, galaniKed.

. 7urring anchorages: 10 gauge galaniKed )ire ties, manufactureruired to compl* )ithseismic re>uirements.N

7. Proprietar* 7raming S*stem:1. 7raming s*stem for g*psum board panels consisting of cold-rolled steel members

conforming to AST$ 50, )ith e@posed surfaces finished in manufacturerUsstandard enamel paint finish.

+. 7ire rating: 1 L1-1/+N L+N LN hour rating in accordance )ith #" assembl* indicated.. 5omponents: $ain tees, furring cross channels, furring cross tees, and cross

tees.. Accessories:

a. #-shaped channel molding.b. GalaniKed carbon steel C1+ ga.D hanger )ire.

. Acceptable product: >uialent to &r*)all Suspension S*stem b* #SG.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBUSG ry!all Suspe*sio* Sys4emsV 5ommercial >ualit*, cold-rolled steel, hot-dippedgalaniKed finish:

$ai* Tees: 7ire-Rated 8ea* &ut* classification 1-1/+O high @ 1O long, integral reersible

splice )ith (nurled face. C&G"'-+0 1-1/+O 7aceD

Cross $embers: 7ire-Rated members )ith (nurled face. 5ross Tees: &G"'-+ cross tee 1-1/+O high @ 2O long )ith 1-1/+O )ide face >uic( release cross tee ends for positie loc(ing andremoabilit* )ithout tools.

A))essory Cross Tees: 5ross tees must hae (nurled faces and >uic( release cross tee endsfor positie loc(ing and remoabilit* )ithout tools.

&G"-++ 7ire-Rated 1-1/+O high @ +O long )ith 1/10O face&G"-+ 7ire-Rated 1-1/+O high @ 0O long )ith 1/10O face&G"-+ 7ire-Rated 1-1/+O high @ 2O long )ith 1/10O face&G"-2+ !on 7ire-Rated 1-1/+O high @ 0O long )ith 1/10O face

&G"'-++ 7ire-Rated 1-1/+O high @ +O long )ith 1-1/+O face&G"'-+ 7ire-Rated 1-1/+O high @ 2O long )ith 1-1/+O face

all $oldi*s: Single )eb )ith (nurled faceC&G'$-+ 1-1/+O @ 1O @ 1O long )all moldingDC&G5$-+ 1-/10O @ 1O @ 1O channel moldingD

A))essories: Splice 5lip &GS5-129



12/27

5ompression PostsCSA12/9 12O to 9ODCSA9/2 9O to 2ODCSA2/2 2O to 2ODCSA2/19+ 2O to 19+OD


+. A55SS3R6S

A. $etal Trim for G*psum ;oard:1. 5onform to profile and dimensions indicated.+. $aterial for interior )or(: GalaniKed steel, +0 gauge minimum.. 5orner beads: >uialent to &ur-A-;ead !o. 19 L19N L299N L99N b* #SG.. 5asing beads Cedge beadsD: >uialent to +99A L+99;N L91N L9+N LP-1N L91-;N

L291-AN L291-;N b* #SG.. 5ontrol =oints:

a. Roll-formed Kinc )ith perforated flanges.b. SiKe: 1-/ inch )ide, )ith W inch )ide center channel.c. Proide )ith remoable tape strip oer channel.

d. Acceptable product: >uialent to !o. 9 b* #SG.

;. Paper-7aced $etal Trim for G*psum ;oard:1. 5onform to profile and dimensions indicated.+. $aterial for interior )or(: 5ompl* )ith AST$ 519.. 3utside corners: Paper 7aced $etal ;ead and Trim ;1' series b* #SG.. 3utside ;ullnose corners: Paper 7aced $etal ;ead and Trim LS"35N L&anishN b*

#SG.. 6nside corners: Paper 7aced $etal ;ead and Trim L;+N LS"65N b* #SG.0. Trims: " shape V L; SR6SN LPremas(ed " seriesN L;2 seriesN b* #SG

shape: ; SR6S b* #SG.

5. $etal Trim for eneer Plaster:

1. 5onform to profile and dimensions indicated.+. $aterial: GalaniKed steel, +0 gauge minimum.. 5orner beads: >uialent to !o. 99 b* #SG.. 5asing beads: >uialent to !o. 91-A Cchannel-t*pe edgeD or !o. 91-; Cangle

edgeD b* #SG.. 5ontrol =oints: Roll-formed Kinc )ith perforated flanges. Acceptable product:

>uialent to !o. 9 b* #SG.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB5ontrol =oint locations and spacing should be designated b* Architect.BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

&. Trim for @terior Soffits: Rolled Kinc compl*ing )ith AST$ 519.

. Special Trim and Reeals: @truded aluminum allo* 090-T, profiles as indicated.

7. $olding and Trim for in*l-7aced Panels:1. $anufacturerUs standard rigid plastic molding.+. 6nclude inside corners, end caps, battens and ceiling drie-in trim, as indicated.. 5olor: Almond LAsh ;lueN L7actor*-laminated )ith matching in*lN.



13/27

G. ;ac(er Plates:1. Steel, galaniKed 0 inches )ide @ +9 L10N gauge minimum @ lengths to suit siKe

of items to be attached fastened to studs for attachment of surface mountedfittings and accessories.

+. limination of bac(er plates or direct attachment of accessories or e>uipment tostuds )ill not be allo)ed.

8. 8anger 'ire Sound 6solators: Proide )here indicated for sound-rated suspendedceilings.

6. Adhesies and oint Treatment $aterials:1. 5onform to re>uirements of AST$ 5.+. oint compounds:

a. &r*ing-t*pe Cread*-mi@edD: >uialent to S8TR354I brand taping =ointcompound and topping =oint compound, or S8TR354I all purpose =ointcompound Lor read*-mi@ed light)eight all purpose =oint compound b* #SG.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBS,EET%OC-. bra*d ready


14/27

S,EET%OC-. bra*d se44i*


15/27

. G*psum ;oard Scre)s: Self-drilling, self-tapping steel scre)s.1. 7or steel framing less than 9.9 inch thic(: 5ompl* )ith AST$ 5199+.+. 7or steel framing from 9.9 inch thic( to 9.11+ inch thic(: 5ompl* )ith AST$

5.. Proide T*pe S or T*pe S-1+ scre)s.

4. ;ac(er ;oard Accessories: Proide accessories and corrosion-resistant-coated steelscre)s as recommended b* bac(er board manufacturer and re>uired for completeinstallation.

". Acoustical Sealant: >uialent to to S8TR354I acoustical sealant b* #SG.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBS,EET%OC-. bra*d a)ous4i)al seala*4 is a highl* elastic, )ater-based caul(ing for sound-rated partition and ceiling s*stems and sealing e@terior )alls to reduce infiltration. !on-bleeding and non-staining, pumpable and easil* applied in beads. Proides e@cellentadherence to most surfaces, permanent fle@ibilit* and lasting seal. $eets AST$ 51 and

AST$ 52.BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

$. Sound Attenuation ;lan(ets:1. $ineral fiber, conforming to AST$ 500, T*pe 6.+. Surface burning characteristics per AST$ 2:

a. 7lame spread: 1 or less.b. Smo(e deeloped: 9.

. Thic(nesses: As indicated.. Acceptable product and manufacturer: >uialent to Thermafiber ""5 Sound

Attenuation 7ire ;lan(ets SA7; C7ire Safet* 7S-1 ;lan(etsD.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBSou*d A44e*ua4io* 'ire Bla*e4s ?SA'B@ are paperless, semi-rigid mineral fiber matsdesigned to improe ST5 ratings )hen installed in partitions.BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

!. -7urring 6nsulation: See Section 9+19 ;#6"&6!G 6!S#"AT63!.

3. $iscellaneous Accessories: Proide as re>uired for complete installations.

PART - M5#T63!

.1 MA$6!AT63!

A. @amine substrates and ad=oining construction and conditions under )hich )or( is tobe installed. &o not proceed )ith )or( until unsatisfactor* conditions are corrected.

.+ G!RA" 6!STA""AT63! R?#6R$!TS

A. 6nstall in accordance )ith reference standards and manufactureruired to compl* )ith seismic re>uirementsN.



16/27

;. Tolerances:1. &o not e@ceed 1/2 inch in 2uired to compl* )ith specified tolerances.

5. 6nstall framing to compl* )ith AST$ 5 and )ith AST$ 529 re>uirements thatappl* to framing installation.

&. 6nstall supplementar* framing, bloc(ing and bracing at terminations in g*psum boardassemblies to support fi@tures, e>uipment, hea* trim, grab bars, toilet accessories,furnishings or similar construction.

. $TA" S#PP3RT 6!STA""AT63!

A. $etal Runners:1. Align and secure runner trac(s accuratel* to partition la*out at both floor and

ceiling.+. Proide fasteners appropriate to substrate construction as recommended b*

manufacturer.

;. $etal Studs:1. Position metal studs erticall* in the runners, spaced as indicated.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB6!5"#& ST#& GA#G A!& 7RA$6!G $ATR6M 8R AT 7#T#R &ATBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

+. Place studs so that flanges face in same direction.. 5ut studs inch short of full height to proide perimeter relief.

. Align and plumb partition framing accuratel*.. 'here partitions abut ceiling or dec( construction or ertical structural elements,

proide slip or cushion t*pe =oint bet)een partition and structure asrecommended b* stud manufacturer to preent transfer of structural loads ormoements to partitions, and to proide lateral support.

0. Proide horiKontal bracing )here necessar* for lateral support.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB!3T: '8R ST#&S AR 6!STA""& &6R5T"% AGA6!ST MTR63R 'A""S,6!STA"" ASP8A"T 7"T STR6PS 3R G"ASS 76;R STR6PS ;T'! ST#&S A!&'A""BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

. L5hase )alls:a. Position steel studs on opposite sides of chase directl* across from each

other.b. 5ut cross-bracing from g*psum board 1+ inches high b* chase )all )idth.N

2. L;ac(er plates and bloc(ing:a. 'here handrails, grab bars, cabinets, )all-mounted door stops, or other

)all-hung items are attached to partitions, install bac(er plates or )ood



17/27

bloc(ing accuratel* positioned and firml* secured to metal studs, )hether ornot such bac(er plates or bloc(ing are indicated on &ra)ings.

b. &o not use )ood bloc(ing in fire-rated construction.N. L5ured partitions:

a. 5ut top and bottom runners through leg and )eb at +-inch interals for arclength.

b. ;end runners to uniform cure of radius indicated and locate straight lengthstangent to arcs.

c. Support outside CcutD leg of runners b* clinching a 1-inch high @ + gaugethic( sheet steel strip to inside of cut legs using metal loc( fasteners.

d. Attach studs to runners )ith /2 inch long pan head framing scre)s.e. 3n straight lengths at ends of arcs, place studs 0 inches on center )ith last

stud left free standing.N

5. L8at 5hannel 7urring:1. Attach hat-shaped furring channels either erticall* or horiKontall* )ith fasteners

through alternate )ing flanges CstaggeredD.+. Space furring channels at + inches on center, unless other)ise indicated.

'here furring is indicated to receie bac(er board, )ater resistant g*psum board)ith ceramic tile, or eneer plaster, space at 10 inches on center.

. 6nstall furring channels )ithin inches of floor line and ceiling line.N

&. L-7urring:1. Securel* attach narro) flanges of members to )all )ith concrete stub nails or

po)er-drien fasteners, e@cept as other)ise indicated.+. Se>uence furring installation )ith installation of insulation.N

. L5eiling and Soffit Support S*stems:1. Secure hangers or rods to structural support b* connecting directl* to structure

)here possible other)ise connect to inserts, clips or other anchorage deices orfasteners indicated.

+. Space main runners, hangers and furring according to re>uirements of AST$5, e@cept as other)ise indicated.

. 'here spacing of structural members, or )idth of ducts or other e>uipment,preents regular spacing of hangers, proide supplemental hangers andsuspension members and reinforce nearest affected hangers to span e@tradistance.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB&imi4a4io*s

1. Steel studs are not designed to carr* lie loads, mechanical e>uipment or material storage.

+. $a@imum spacing: 1 inches cold-rolled channels and hangers 2 inches on center. 7orsingle-la*er panels, ma@imum steel stud and furring channel spacing is + inches on center forperpendicular application and 10 inches on center for parallel application. 7or panels used asbase for spra*-applied ceiling te@ture finish, ma@imum frame spacing is 10 inches on center for inch thic( panels perpendicularl* applied Cparallel panel application not recommendedD +inches on center for /2 inch thic( panels perpendicularl* applied, 10 inches on center forparallel application.BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

USG SPECLINK 09260 / 09 21 16 (1)) Gypsum Assemblies on e!"l #$"min%


18/27

(((((((((((((((%ETAIN BE&O 'O% STEE& EC- CONST%UCTION(((((((((((((((

. Attach directl* to structural elements onl* do not attach to metal dec(. "oophangers and )ire-tie directl* or proide anchors or inserts.

(((((((((((((((((((%ETAIN BE&O ON&" 'O% SEIS$IC &OAING(((((((((((((((((((

. 6nstall compression posts, spla* )ires and other accessories as re>uired tocompl* )ith seismic re>uirements.

0. @tend runners to )ithin 0 inches of )alls.. 'ire-tie or clip furring members to main runners and to other structural supports

indicated. 6n fire resistance rated assemblies, )ire-tie furring members do notclip.

2. &o not permit furring or runners to contact masonr* or concrete )alls.. Proide 1 inch clearance bet)een furring or runners and abutting )alls and

partitions.

((((((((((((((((%ETAIN 'O&&OING 'O% #%O#%IETA%" S"STE$((((((((((((((((((

19. 7or proprietar* framing s*stem, compl* )ith manufacturer


19/27

0. 5ut openings in g*psum board to fit electrical outlets, plumbing, light fi@tures andpiping snugl* and small enough to be coered b* plates and escutcheons. 5utboth face and bac( paper.

. Scre) board in place securel* )ith scre)s spaced according to manufacturer


20/27

+. Position end =oints oer supports.. Allo) at least 1/ inch bet)een edge of soffit board and ad=acent construction,

unless other)ise indicated.. 7asten )ith corrosion-resistant scre)s.N

8. LG*psum Shaft)all:

1. rect g*psum board shaft liner for use as temporar* shaft enclosure.+. Scre) attach base and face la*ers according to manufactureruire closer than normal studspacing.

Panels are horiKontall* applied, gentl* bent around framing and securel* fastened to achieethe desired radius. The minimum radius of curature meets man* applications Csee table fordr* g*psum panelsD.

5utouts for electrical bo@es are not recommended in cured surfaces unless the* can be madeafter boards are installed and thoroughl* dr*.BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

. L!R P"ASTR 6!STA""AT63!

A. ;ase:1. 6nstall g*psum base in accordance )ith AST$ 52. Appl* g*psum base )ith

face side out.+. ;utt and fit abutting edges and ends together for light contact do not force into

place.. &o not locate fasteners closer than /2 inch from ends or edges of sheets. Set

heads slightl* belo) surface of g*psum base, but do not brea( paper face.



21/27

. &rie scre)s )ith po)er scre)drier.

;. Single "a*er Applications:1. Position edges oer support flanges.+. To maintain true surface plane for installation on studs, arrange direction of

application so that leading edge of base is attached first to open edge of stud

flange.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBO%BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB;. &ouble "a*er Applications:

. Appl* g*psum base la*er and face la*er )ith long dimension parallel to supports.3ffset =oints of face la*er at least 10 inches from base la*er =oints.

. 7asten both base and face la*ers separatel* to supports.. Stagger and space fasteners in accordance )ith g*psum base manufactureruence.

b. Appl* g*psum base la*er and face la*er )ith long dimension parallel tosupports. 3ffset =oints of face la*er at least 10 inches from base la*er =oints.

c. 7asten both base and face la*ers separatel* to supports.d. Stagger and space fasteners in accordance )ith g*psum base

manufacturer


22/27

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBThe fire resistance ratings and sound ratings are predicated upon use of identical componentsand installation procedures as used in tested assemblies. This includes proper application ofS8TR354I brand Acoustical Sealant and installation of T8R$A76;R SA7;. $a@imumstud spacing: + inches. 5eramic tile is not recommended for application to single la*erpanels.

ariable )ind pressure can cause a high-rise building to drift or s)a*. This can result inmoement of the non-loadbearing partitions, thus causing noise, )hich is not dampened b*sound attenuating partitions.BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

A. 6nsulation:1. 6nstall sound attenuation blan(ets in sound-rated partitions and ceilings )here

indicated.

+. 5ompletel* fill space bet)een studs and framing to full height of partition )all orfull area of ceiling.

. 7it carefull* behind electrical outlets and other )or( penetrating sound-ratedconstruction.

((((((((E&ETE BE&O I' NO STEE& EC- CONST%UCTION((((((((((((((((((((((((

. 6nstall sound attenuation blan(ets in gaps bet)een steel dec( flutes and tops ofsound-rated partitions, )hich are not fire-rated. Attach blan(ets in accordance)ith manufacturer


23/27

1. 'here sound-rated partition )alls intersect non-rated g*psum board partition)alls, e@tend sound-rated construction to completel* close sound flan(ing pathsthrough non-rated construction.

+. Seal =oints bet)een face la*ers at ertical interior angles of intersectingpartitions.N

. A55SS3R% 6!STA""AT63!

A. Trim:1. #se same fasteners to anchor trim accessor* flanges as re>uired to fasten

g*psum board to supports, unless other)ise recommended b* trim manufacturer.+. 6nstall metal corner beads at e@ternal corners.. 6nstall metal casing bead trim )heneer edge of g*psum board )ould other)ise

be e@posed or semi-e@posed.

;. 5ontrol oints:1. 6nstall control =oints at =unction of g*psum board partitions )ith )alls or partitions

of other finish material.+. 6nstall control =oints )ithin long runs of partitions, ceilings or soffits at

appro@imatel* 9


24/27

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBAirless spra* application onl*. #se professional e>uipment that meets or e@ceeds the follo)ingrating )hen spra*ing through 9 ft. of WO i.d. high-pressure hose: output at least 1 gallon perminute pump pressure rated at +99-999 psi and accommodates a 9.91O spra* tip at +999psi. Graco $AR4 , and G$a@ 99 8& are e@amples of approed airless pumpinge>uipment. #se a 9-mesh filter located in the high-pressure manifold. #se a spra* tip orifice

bet)een 9.9+O to 9.91O. 6t is recommended to use a Graco hea*-dut* te@ture spra* gun ore>uialent that accommodates a Graco RA5 + C9.9+OD, RA5 + C9.9+OD, or RA5 1 C9.91OD tip.

Test the spra* pattern prior to application. To appl*, hold spra* gun perpendicular to thesurface appro@imatel* 1+ to 12 inches a)a*. $oe the gun parallel to the surface at a stead*rate. "ap each stro(e appro@imatel* 9Q oer the preious stro(e for uniform paint thic(ness.Spra* from left to right to scratch in the initial coat at appro@imatel* half of the desiredthic(ness. Then crosshatch spra* up and do)n as the double-up coat to the desired thic(ness.'hen painting corners, aim the gun to)ard the center of the corner to ensure both sides arespra*ed eenl*. 'hen used in lieu of a s(im coat of =oint compound and paint primer coat in a"eel g*psum board finish, appl* to a minimum 'et 7ilm Thic(ness C'7TD of 1 mils. 6n all

applications a )et film thic(ness in e@cess of +9 mils is not recommended. #se a )et filmthic(ness gauge to ensure proper application thic(ness and ma@imum performance. &uringand after application, aoid drafts and maintain F7 C1 F5D minimum product, air andsurface temperatures until surface is dr*.BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

;. 6nterior G*psum ;oard:(((#%E'I&& ON&" EASE TA#E%E EGE G"# BF E&ETE #%E'I&& SUBuired to fasten

g*psum board to supports, unless other)ise recommended b* trim manufacturer.+. 6nstall metal corner beads at e@ternal corners.. 6nstall metal casing bead trim )heneer edge of g*psum base )ould other)ise

be e@posed or semi-e@posed, and )here g*psum base terminates againstdissimilar material.

6. 5ontrol oints: 6nstall )here indicated and specified.

. Special Trim and Reeal oints: 6nstall as indicated on dra)ings and in accordance)ith manufactureruirements of manufacturer or these specifications. Appl* 1 or +-coat s*stem ofuniform thic(ness as indicated.

;. $i@ing:1. #se mechanical mi@ers for mi@ing plaster in accordance )ith #SG

recommendations.+. 5lean mechanical mi@ers, mi@ing containers and tools after mi@ing each batch

(eep free of plaster from preious mi@es.. Thoroughl* mi@ plaster )ith proper amount of )ater until uniform in color and

consistenc*.. Retempering not permitted discard plaster that has begun to stiffen.

5. ;ase 5oat:1. Tro)el appl* base coat plaster oer g*psum base to 1/10 to /+ inch thic(ness.+. 'here plaster is flush )ith metal frames, grooe at =unction to reduce possibilit*

of chipping. 5ut plaster free from these metal sections before plaster sets.

&. 7inish 5oat:1. Tro)el appl* finish coat plaster to a ma@imum 1/10 inch thic(ness oer basecoat

plaster.



27/27

+. Scratch finish coat in thoroughl* oer dr* base coat and immediatel* double bac(to true een surface.

. 7inish surface to flat, smooth, hard tro)el finish.

((((((((((((((((((((((((((((((((((((O%((((((((((((((((((((((((((((((((((((((((

. 7inish surface to uniform float te@ture

. Perform cutting, patching, repairing and pointing-up operations neatl* and thoroughl*.Repair crac(s and indented surfaces b* moistening plaster and filling )ith ne)material, tro)eled flush )ith ad=oining surfaces.N

.19 AST6!G

A. 5orrect damage and defects )hich ma* telegraph through finish )or(.

;. "eae )or( smooth and uniform.

EN O' SECTION

USG SPECLINK 09260 / 09 21 16 (2)) Gypsum Assemblies on e!"l #$"min%

Documents

Usg Gypsum Board Arc Spec en 09260 092116