LIBRETTO™ gridless metal ceiling system creates islands, canopies, radial ceilings and other dynamic shapes that define space and architectural features – all based on your own design concept! You determine the shape and style of your ceiling, and USG brings it to reality with custom-manufactured components that fit together with precision. Each assembly is designed for turnkey installation and delivered complete, assuring that the installation looks just as you envisioned.
Offices
Lobbies
Conference Rooms
Retail
Hospitality
Entertainment
Health Care
Transportation Hubs
The Libretto™ gridless metal ceiling system features individually fabricated aluminum panels that interconnect to form a continuous, uninterrupted plane. Collaborate with USG to create a custom design tailored to your space, and enhance the aesthetic with perforations that follow the contours of your unique ceiling. Even the concealed carrier system is custom-fit, with a choice of three perimeter profiles to achieve the proper scale for your space.
User’s Guide
Pages
Understand Your System 3 Overview
Design Your System 4 Design Guide
Selector Worksheet
Application Details
System Components
Lighting
Specify Your System 24 Application Guide Specifications
For More Information Technical Service 800 USG.4YOU
Web Site usg.com
� Libretto Gridless Metal Ceiling System
Metal Panels TheLibrettosystemfeaturesInterlockingmetalpanelsthatformashapeandsizedirectedbythearchitectordesigner.Theassemblyismanufacturedcompletetorequirenocuttingorfittingbytheinstaller.Optionalaccessportsmaybespecifiedattheinitialdesignstage;pointaccessonly.
Carrier System Engineered,concealedsystemsuspendedfromthestructure.Componentsinclude: –Carrierchannel –Channelsplice/extension –Panelhangerclip
Perimeter Profile Eachassemblyisfinishedwithaperimeterprofile4,6or8inheight.Componentsinclude: –Curvedandstraightperimeterprofilesections –Factorypre-miteredcorners –Profileattachmentclips –Profilesplices
Materials Recycled Content
Panels Aluminum 80%
Carrier system Cold-rolledsteel 25%
Edge profile Cold-rolledsteel 25%
Colors Standardcolors:FlatWhiteandSilverSatin.Customcolorsavailableonrequest.
Perforation –ContouredpatternthatfollowstheshapeofyourLibrettoceiling. –Customgraphicwithapatternyouprovide. –Standardpatternsforsquareandrectangularceilings. –Smooth,unperferatedmetal.
Lighting Librettoassembliesmaybelitfromabovewithavarietyoflightingsystemstocreatearangeofeffects,fromambienttodramatic.SeeUSGdesignguideIC533formoreinformation.
Plenum Depth Minimum12,with8clearanceabovetopedgeofperimeterprofile.Seepage19fordetails.
Design Process USGtakescareofthedesignworkforyou!SimplysendusthegeneralshapeandsizeoftheLibrettoceilingyouwanttocreate(seepages10-11forguidelines).Wewilldesigntheassemblytofityourspace,includinganoptionalcontouredperforationpatternthatflowswiththeshapeofyourceiling.
System Overview
2 Libretto Gridless Metal Ceiling System
View from Below
View from Above
3 Libretto Gridless Metal Ceiling System
channel extension
factory pre-mitered corner
profile attachment clip
profilesplice
channelsplice
panel hanger clip
carrier channel
alignment tab
Seepage21formoreinformationaboutsystemcomponents.
USG decorative hanger solution or 12-ga. hanger wire
perimeter profile
metal panel
4 LIBRETTO Gridless Metal Ceiling System
System Overview
Individual Islands LIBRETTO ceilings provide an excellent solution for creating visual interest in conference rooms, retail spaces andreception areas. The shape and perforation pattern is fully customizable, allowing you to highlight functional zones,echo the shape of workstations or open floor area, and draw attention to architectural details. Crescents, serpen-tines, toruses, and even simple squares and rectangles provide the basis for unlimited creativity.
Application Concepts
6 LIBRETTO Gridless Metal Ceiling System
System Overview
Application Concepts
Multiple Islands LIBRETTO ceilings provide an easy, cost-effective solution for creating visual energy by repeating and nestingshapes.Align multiple islands to accentuate linear space and provide wayfinding. Or, group islands in tandemto break up bland expanses with geometric interest. Islands may also be positioned at varying heights toreflect the scale of high spaces.
8 LIBRETTO Gridless Metal Ceiling System
Radial Applications Made with the latest computer-controlled manufacturing technology, LIBRETTO ceilings offer unprecedentedaccuracy, ensuring that even the largest assemblies provide a seamless fit. Design expansive concentricand multi-level radial designs with confidence, bringing intimacy and visual interest to large spaces suchas amphitheaters, showrooms and auditoriums.
System Overview
Application Concepts
�0 Libretto Gridless Metal Ceiling System
Step � Librettoceilingsmaybeshapedascrescents,serpentines,four-sidedpolygons,andtoruses.Select Shape Theillustrationsinthissectionshowbasicdesignconceptsandguidelines.
Crescent, Serpentine, Criteria Example
and Polygon − Musthavetwostraightoppositeends. − Lengthofeachendmustbe30-144. − Cornersmustbe15°-165°. − Sidesmayincludecurvedandstraightsections. − Allcurvesmusthaveminimum18radius. − Oppositesidesnotrequiredtobeconcentric. Note:Appropriatepanelwidthswillbe determinedbytheUSGdesignstaff.
Crescent Serpentine
Four-sided Polygon
Libretto ceilings can be configured to create a wide range of shapes, with mul-tiple perforation options to enhance the visual interest of the ceiling itself, integrate custom patterns or icons, and create unique lighting effects. Following are the steps and guidelines for creating a Libretto ceiling that will provide a crowning touch to your project.
Design Guide
ceiling shape must have flat ends
minimum 18" ceiling radius
�� Libretto Gridless Metal Ceiling System
Torus Atorusisacrescent,serpentine,orpolygonwithendsthatmeet,sotheprecedingguidelinesalsoapplyto torusshapes.AdditionalstandardsapplytotheshapeoftheopeningrelativetotheLibrettoceilingisland: −Theinsideperimetermustbeatleast1/3theoutsideperimeter. −Boththeoutsideperimeterandtheopeningmayincludecurvedandstraightsections. −Allcurvesmusthaveaminimum18radius;allstraightsectionsmustbeatleast8"long. Examples
�2 Libretto Gridless Metal Ceiling System
Design Guide
Step 2 Librettopanelsareavailableinsolidmetalorachoiceofperforationoptions:Select Perforation – Contouredperforationflowswiththeshapeofyourceilingwithoutinterruptionacrosspaneljoints.Youspecify
perforationshape,sizeandorientation,andwecustomizethepatterntofityourLibrettoceiling. – Customgraphicletsyoumakeyourownstatement!Designapatternorprovideanimagetoappearon
individualpanelsorradiateovertheentireceiling. – Standardperforationsareavailableinaselectionof14patternsandarerecommendedforrectangularislandsonly. –OptionalblackorwhiteAcoustibond®backeravailable.
Punchesavailableforcontouredandcustomgraphicperforation:
�/8 �/4 3/8 �/2 3/4 �
Contoured Availablewithallpanelshapesandespeciallyrecommendedforcurvedandtrapezoidalislands,thisoption Perforation createsanattractivelandscapeofflowingpatternsoflightanddark.Patternsareuninterruptedoverpanel
joints,andperforationsaregenerallylargerandmorewidelyspacedthanstandardpatterns(shownonpage14).Perforationsmayberoundorsquare.
1/8” 1/4” 3/8” 1/2” 1”3/4”1/8” 1/4” 3/8” 1/2” 1”3/4”
13 Libretto GridlessMetalCeilingSystem
Roundorsquareperforations
CustomGraphic Provide your own illustration or use up to five standard hole sizes to design a custom pattern. An electronic Perforation drawing (.dwg or .dxf) will be required at time of manufacture. Note: Custom graphic perforation patterns
require a minimum 3/4 break across panel joints.
C500
�4 Libretto Gridless Metal Ceiling System
Design Guide
Standard Recommendedforrectangularpanelsonly.Eachpanelwillhaveaminimum3/8unperforatedborder. Perforation
Standard Perforations(shownat50%size)Sixofthemostpopularperforationpatternsshownhere.Thefollowingpatternsalsoavailable:A062,A188,A250,A500,C116,C188,C250AandD375.SeeUSGperforationselectorIC425forfull-sizeillustrationsofallpatterns.
A116
C062
D500
C375
D250
Pattern No. C�00 Pattern No. D2�0 Pattern No. D�00
Round—1/2perforations Square—1/4perforations Square—1/2perforations
1-1/2o.c.,9%openarea 3/4o.c.,11%openarea 1-1/2o.c.,17%openarea
Pattern No. A��� Pattern No. C0�2 Pattern No. C3��
Round—15/128perforations Round—1/16perforations Round—.375perforations
.25o.c.,17%openarea .351o.c.,2%openarea 1-1/8o.c.,9%openarea
�� Libretto Gridless Metal Ceiling System
Step 3 4 Profile � ProfileSelect Perimeter Profile
8 Profile
Step 4 – CompletetheSelectorWorksheetonpages16and17.Finish and Specify – Prepareanelectronicdrawing(.dwgor.dxffile)ofyouroverallceilinglayoutandLibrettoshape(s).Your Design – ContactyourlocalUSGrepresentativetodiscussanyquestionsaboutyourdesignorcall800USG.4YOUto
locatearepresentativenearyou.
�� Libretto Gridless Metal Ceiling System
Shape and Size Crescent Serpentine Polygon Torus Other
Totalsq.ft.area_______________
Perforation Contoured Contouredperforationpatternsconformtotheshapeoftheceiling.Perforationpatternsflowsmoothlyacrosspaneljointswithouginterruption.Usingourproprietaryperforationtechnology,ourexperiencedstaffcanprovideanaestheticallypleasingpatternwithminimalspecifications.Selectthefollowing:
A.Punchshapeandsize:
Shape Round Square
Size 1/8 1/4 3/8 1/2 3/4 1
B.Minimumdistancebetweenholes(minimum1/16betweenholeedges).
C.Minimumdistancebetweenrows(ifdifferentfromB).
D.Borderdimensiontoframetheisland(3/8min.).
Round Perforations Square Perforations
Custom Graphic –Provideafull-scaleelectronicdrawing(.dxfor.dwgfile)illustratingyouridea. –OurstaffcanhelprefineyourconcepttoensurethatitfitswithinLibrettodesignguidelines. Note:Customgraphicperforationpatternsrequireaminimum3/4breakacrosspaneljoints.
Standard Eachpanelwillhaveaminimum3/8unperforatedborder;theexactborderdimensionmaybespecifiedoritmaybedevelopedbyourstafftoassurethatthepatterniscenteredoneachpanel.Standardperforationisrecommendedforrectangularislandsonly.
A062 C062 D250
A116 C116 D375
A188 C188 D500
A250 C250A
A500 C375
C500
Smooth Noperforation
Selector Worksheet
C
D
B
A
C
D
B
A
�� Libretto Gridless Metal Ceiling System
Acoustibond Backer Black White None
AvailablewithFlatWhiteandSilverSatinpanelsonly.
Perimeter Profile Availableprofiles:
4 6 8
Note:Minimum12plenumdepthand8clearanceabovetopedgerequiredforproperinstallation.
Colors SilverSatin[002] FlatWhite[050]
Customcolorbasedonindustrystandardcolorsortomatchcustomersample.Providepaintmanufacturer’s nameandcolornumberora3x5colorsample.
Notes:(1)Metalliccolorsnotavailable.(2)StandardAcoustibondbackernotavailablewithcustomcolor.Checkfor availabilityandrestrictions.
Utilities Factory cutouts Availableonrequest.Provideanelectronicdrawing(.dxfor.dwgfile)indicatingexactsizesandpositions.
Integrated Fixtures Pleaseprovideanelectronicdrawing(.dxfor.dwgfile)showingallfixturessuchaslighting,sprinklingandHVACsowecanensurethattheseitemswillnotintersectapaneljointorinterferewiththeconcealedcarriersystem.
Accessories Hanger Options Choosefrom12-gaugegalvanizedwireforconcealedapplicationsordecorativesolutionsforexposedapplicationsincluding18-gaugestainlesssteelwireormulti-strandedaircraftcable.SeeinstallationguideIC453foroptionsandapplications.
Access Ports StandardLibrettoceilingsareinstalledprogressivelyandarenotaccessible.Ifrequired,ourstaffcanassistindesigningspecialpanelswithaccessportstomeetyouraccessiblilityneeds.Provideanelectronicdrawing(.dwgor.dxffile)indicatingpoint(s)whereaccessisneeded.
Contact Name
Contact Phone Number
Project Name
Application Details
�8 Libretto Gridless Metal Ceiling System
Wall Termination
Section Plan
LIBRETTO panel
perimeterprofile
trim screw- attached to wall as bracing
panel hanger clip
carrier channel
hanger wire
A
19
B
19
C
19
Perimeter Profile – Perpendicular to Carrier Perimeter Profile – Parallel with Carrier
Typical Assembly
�� Libretto Gridless Metal Ceiling System
channel splice extension
LIBRETTO panel
6" profileshown
profile attachment clip
carrier channel
screw attached
8" to 12" hanger wire4' o.c. max.
structure
8" min.
A
19
profile attachment clip
panel hanger clip
panelalignment tab
carrierchannel
structure
LIBRETTO panel
6" profile shown
hanger wire
8" to 12"
8" min.
C
19
panel hanger clip
channel splice
suspension wire
suspension channel
LIBRETTO panelsB
19
Application Details
20 Libretto Gridless Metal Ceiling System
Utility Integration Optional Access Panel
Recessed Light Fixtures Sprinkler Systems
Signage
LIBRETTO panel
LIBRETTO removable access panel
LIBRETTO panel
panel hanger clip carrier channel
light fixture(by others)
light-trim ring(by others)
fixtureindependentlysupported
light-fixturemounting bracket(by others)
water supplyfeed pipe
deflector(dropped position)
cover-plate retainer assembly
sprinkler support- clip assembly
face of sprinkler fitting
LIBRETTO panel
panel hanger clipsuspension channel
LIBRETTO panel
panel hanger clip
carrierchannel
Exit light fixture(by others)
light-fixturemounting bracket(by others)
Note: Accessibilityonspecialrequest.Pointaccessonly.Indicaterequiredaccesspoint(s)onreflectedceilingplan.
2� Libretto Gridless Metal Ceiling System
System Components
Libretto Panel – Solid Libretto panel – Perforated, with Acoustibond Backer
Carrier Channel – Straight Carrier Channel – Curved
Channel Splice/Extension Panel Hanger Clip
Perimeter Profile – Straight Perimeter Profile – Custom-Curved Perimeter Profile – Pre-Mitered Corner
Profile Splice Profile Attachment Clip
black or whiteACOUSTIBOND backer(optional)
22 Libretto Gridless Metal Ceiling System
Backlighting Fluorescentfixtureswithnoreflectorprovidenon-directionalilluminationinspace.Useoffixtureswithareflectordirectslightdownwardandreducesupwardspilllight.
Linear Fluorescent Fixtures
Lighting
A Libretto ceiling may be lighted in a variety of ways, creating effects that can showcase the unique qualities of the ceiling itself, highlight architectural details of the space, or play a central role in your design theme. Following is an overview of general lighting options. For specific concepts developed by an independent lighting design consultancy, see USG design guide IC533.
varies
mounting positions of fixtures varies
depending on design parameters
mounting positions of fixtures varies
depending on design parameters
use of reflector directs light downward and reduces upward spill light
no reflector provides non-directionalilluminationin space
varies
varies
Lighting - Linear Fluorescent
23 LIBRETTO Gridless Metal Ceiling System
Backlighting Where ACOUSTIBOND backer is not selected, the perforation pattern can be projected on walls and floors of the space.White ACOUSTIBOND backer will diffuse light to create an even glow. (See photo on brochure cover.)
Directional Fixtures
varies
directional sources for longer distance lighting, actual fixture placement, beam spread & lamp choice to be determined upon pending design parameters.
varies
Lighting - Directional Sources
24 Libretto Gridless Metal Ceiling System
Backlighting ProgrammableLEDsaddanadditionallevelofinterestbyallowingtheopportunitytoprojecttheperforationpatternwithchangingcolors.
Programmable Color LEDs
variesprogrammable color fixtures
perimeter-mounted programmable color fixtures adddrama with alternatinglight sequences
varies
Lighting - LED Programmable Color
Lighting
2� Libretto Gridless Metal Ceiling System
Uplighting Low-voltagetracklightingcanbeattachedtotheLibrettoceilingsurfacefordramaticuplighting.Pendant-styleindirectfluorescentfixturescreateamoreuniformeffect.
Track and Pendant Lighting
low voltage decorative lighting to enhance bottom surface of LIBRETTO ceiling and surounding environment
flexible track/rail suspendedthrough perforations. rail can follow ceiling contours if desired
Lighting - Decorative
Accent Lighting Highlight specific features within a space, and provide effective task lighting in seating areas and workstations.
Rail-Mounted Low-Voltage Fixtures
Lighting
low-voltage lighting for accenting artwork, reception counter, corporate logo,seating, etc.
flexible track/rail suspendedthrough perforations. rail can follow ceiling contours if desired
26 LIBRETTO Gridless Metal Ceiling System
2� Libretto Gridless Metal Ceiling System
Part � �.� A. DescriptionofWork:WorkofthisSectionincludes,butisnotlimitedto,thefollowing:General Summary �. Metalceilingpanels. 2. Metalsuspensionsystems. 3.Trimandaccessories.
�.2 A. SeeSection____________–HVAC Related work B. SeeSection____________–Lighting
specified elsewhere C. SeeSection095100(09150)–AcousticalCeilings
�.3 A. ProductData:Submitmanufacturer’sspecificationsandinstallationinstructionswithprojectconditionsand Submittals materialsclearlyidentifiedordetailedforeachrequiredsystem.
�.4 A. ASTMC636:RecommendedPracticeforInstallationofMetalSuspensionSystemforAcousticalTileand References Lay-inPanels. B. CISCACeilingSystemsInstallationHandbook
�.� A. ReferenceStandards Quality assurance �. SSMAICBOER-4943PSteelStudManufacturersAssociationProductTechnicalInformation 2. ASTMC636,RecommendedPracticeforInstallationofMetalSuspensionSystems. 3. CISCACeilingSystemsInstallationHandbook B. Submittals �. Samples:Submitrepresentativesampleofcolorandfinishforallexposedmaterials. 2. ShopDrawings: a. Reflectedceilingplans:Submitceilingsuspensionsystemlayoutindicatingdimensions,lightingfixture
locations,andrelatedmechanicalcomponents. b. AssemblyDrawings:Indicateinstallationdetails,accessoryattachmentsandinstallationofrelated
mechanicalsystemcomponents. 3. Manufacturer’sData: a. SystemDetails:Submitmanufacturer’scataloguecutsorstandarddrawingshowingdetailsofsystem
withprojectconditionsclearlyidentifiedandmanufacturer’srecommendedinstallationinstructions.
�.� A. Delivery: Delivery, Storage �. DeliverMaterialtositepromptlywithoutundueexposuretoweather.
And Handling 2. Deliverinmanufacturer’sunopenedcontainersorbundles,fullyidentifiedwithname,brand,typeandgrade.
B. Inspection: �. Promptlyinspectdeliveredmaterials,filefreightclaimsfordamageduringshipment,andorderreplacement
materialsasrequire.Anydamagedmaterialsshallbepromptlyremovedfromthejobsite. C. Storage: �. Storeabovegroundindry,ventilatedspace. 2. Protectmaterialsfromsoiling,rustinganddamage. D. Handling: �. Handleinamannertoensureagainstracking,distortionorphysicaldamageofanykind.
�.� A. EnvironmentalRequirements ProjectConditions �. Donotinstallsystemoranypartsuntilspaceisenclosedandweatherproof,wet-workiscompleteanddry, foroccupancy.
Application Guide Specifications
�.8 A. General: Coordination �. Coordinatewithotherworkincludingmechanicalandelectricalworkandothertrades.Installationofconduit
With other work: andductworkabovethemetalceilingsystemshallbecompletebeforeinstallationofthemetalceilingsystem.
B. Protection: �. Followgoodsafetyandindustrialhygienepracticesduringhandlingandinstallingofallproductsandsystems,
withpersonneltotakenecessaryprecautionsandwearappropriatepersonalprotectiveequipmentasneeded.ReadMaterialSafetyDataSheetsandrelatedliteratureforimportantinformationonproductsbeforeinstallation.Contractortobesolelyresponsibleforallpersonalsafetyissuesduringandsubsequenttoinstallation;architect,specifier,ownerandmanufacturerwillrelyoncontractor’sperformanceinsuchregard.
Part 2: �.� A. Librettometalceilingpanels:Materials: Materials �. ManufacturedbyUSGInteriors,Chicago,IL,USA,incompliancewithapplicableASTM&IndustryStandards. DesignedtobeinstalledwithLibrettoSuspensionSystem. 2. Panelfinishesshallbepaintedincolor/finish#*Refertopage17forfinishavailability. 3. Perforationpatterns. a. Forcontouredpattern:Perforationpatternshallconvergeanddivergeasnecessarytofollowtheshape
specifiedonthearchitecturalplans.Variablepatternshallconsistof[size&shape]perforationsandminimumspacing[Bdimension]x[Cdimension]and[Ddimension]border.[Deleteifnotused].*Refertopage12foravailableholeshapesandsizes.
b. Forcustomgraphic:Perforationplanshallbeacustomdesigninaccordancewitharchitecturalplans[Deleteifnotused].*Refertopage12foravailableholeshapesandsizes.
c. Forstandardpattern:PerforationpatternshallbeUSGstandard[pattern]with[width]panelborder [Deleteifnotused].*Refertopage14forStandardPerforationpatterns. 4. Panelsshallhavefactory-applied[black][white]acousticalbacker.USGAcoustibondorequivalent. B. Librettocarriersystem: �. ManufacturedbyUSG(UnitedStatesGypsumCompany,USGInteriors),Chicago,IL,USA,incompliancewith
applicableIndustryStandards. 2. 1-1/2inchcold-rolledU-channel,16-gauge,commercialquality,hot-dippedgalvanized.Allpartsfactory-curved
andfactory-cuttofinaldimensionsasrequiredforinstallation. 3. Carrierchannels:Channelsplices,channelextensions,andpanelhangersofcommercial-qualitycold-rolled
steel,exposedsurfaceshot-dippedgalvanized. C. Accessories:[Deletethissectionwhennotused] a. Panelswithcutouts:Forincandescentlights,sprinklers,orspeakersinaccordancewitharchitecturalplans. b. Panelswithaccessportsinaccordancewitharchitecturalplans. c.Hangerwirenotetospecifier:Commoninstallationpracticeforsuspendedsystemswouldbethe
useof12-ga.steelhangerwire.Alternativedecorative18-gaorstainlesscablescanbesubstitutedwithlocalauthorities’approval.
D. Librettoperimeterprofile: �. ManufacturedbyUSG(UnitedStatesGypsumCompany,USGInteriors),Chicago,IL,USA,incompliancewith
applicableASTMStandards.DesigntobeinstalledonLibrettometalceilingpanels. 2. Custom-engineered,roll-formedtrimchannelsofcommercial-qualitysteel.Allpartsfactory-curvedandfactory-
cuttofinaldimensionsasrequiredforinstallation. 3. Profilesize:[4-inch][6-inch][8-inch]highwith9/16-inchhorizontallegs. 4. Profilefinishesshallbepaintedincolor/finish#*Refertopage17forfinishavailability. �. Profileattachmentclipsofcommercial-qualitycold-rolledsteel,exposedsurfaceshot-dippedgalvanized. �. Profilesplicesofcommercial-qualitycold-rolledsteelinfinishtomatchLibrettoperimeterprofile;formedfor
snap-fitintoLibrettoperimeterprofile.
Application Guide Specifications
28 Libretto Gridless Metal Ceiling System
2� Libretto Gridless Metal Ceiling System
Part 3: 3.� A. Standardforceilingsuspensionsysteminstallations:ComplywithASTMC636.Execution General B. CISCACeilingsSystemsHandbook.
3.2 A. Examineareastoreceiveceilingpanelsforconditionsthatwilladverselyaffectinstallation.Providewritten Inspection reportofdiscrepancies. B. Donotstartworkuntilunsatisfactoryconditionsarecorrected. C. Worktobeconcealed:Verifyworkaboveceilingiscompleteandinstalledinmannerthatwillnotaffectlayout
andinstallationofceilingpanels. D. Beginningofinstallationshallsignifyacceptanceofconditionsinareastoreceiveceilingpanels.
3.3 A. Fielddimensionsmustbeverifiedpriortoinstallation. Preparation
3.4 A. Standardreference:Installceilingpanelsandsuspensionsystem,includingnecessaryhangers,grillage,and Installation othersupportinghardwareinaccordancewithASTMC636,CISCACeilingSystemsHandbook,anyapplicable
coderequirement,andmanufacturerrecommendations. B. HangerWires: �. Spacing:Spacehangerwiresonthesuspensionchannelsnotmorethan48incheso.c. 2. Limitations:Attachhangerwiresdirectlytothestructure,asrequiredtosupporttheimposedloads.
Donotsupportwiresfrommechanicaland/orelectricalequipment,pipingorotherequipmentoccurringaboveceiling.
C. Librettocarriersystem �. Hangsuspensionchannelsbyhangerwiresinaccordancewithshopdrawings. 2. Connectsectionsofsuspensionchannelsbyapplyingchannelspliceswithself-drillingsheetmetalscrews. 3. Applychannelextensionstotheendsofthesuspensionchannelswithself-drillingsheet-metalscrews. D. Librettopanels. �. Installpanelsprogressivelyinaccordancewithshopdrawings. 2. Suspendpanelsfrompanelhangerclips. 3. Interlockadjacentpanelsalongthefactoryformedstandingseamedgespermanufacturer’srecommendations. E. Librettoperimeterprofile. �. ApplyprofileattachmentclipstotheendsofLibrettopanelspermanufacturer’srecommendations. 2. Profileattachmentclipsshallbespacedbetween18to36inchesoncenter. 3. Installprofilecomponentsprogressivelyinaccordancewithshopdrawingsandmanufacturer’s
recommendations. 4. Connectsectionsofperimeterprofilebysnappingtogetherwithtrimsplicespermanufacturer’s
recommendations.
3.� A. Performanynecessarycleaningmaintenancewithnon-solvent-basedcommercialcleaner. Cleaning B. Immediatelyremoveanycorrosivesubstancesorchemicalsthatwouldattackpaintedfinishes
(i.e.wallpaperadhesives). C. Touchupallminorscratchesandspots,asacceptable,orreplacedamagedsectionswhentouch-up
isnotpermitted. D. Repaintingofcomponentsshallbewithahigh-qualitysolvent-basedenamelpaintandappliedas
recommendedbypaintmanufacturer. E. Removalofdebris:Removealldebrisresultingfromworkofthissection.
Technical Service
800 USG.4YOUWeb Sites
usg.comusgdesignstudio.comSamples/Literature
888 874.2450Samples/Literature E-mail
[email protected]/Literature/Fax
888 874.2348Customer Service
800 950.3839
Manufactured by USG Interiors, Inc.550 West Adams StreetChicago, IL 60606
IC525/8-07© 2007, USG Interiors, Inc.Printed in U.S.A.
Product InformationSee usg.com for the most up-to-date product information.NoteAll products described here may not be available in all geographic markets. Consult your local sales office or representative for information. TrademarksThe following trademarks used herein are owned by USG Interiors, Inc. or a related company: Acoustibond, Libretto.PatentsPatents pending.NoticeWe shall not be liable for incidental and consequential damages, directly or indirectly sustained, nor for any loss caused by application of these goods not in accordance with current printed instructions
or for other than the intended use. Our liability is expressly limited to replacement of defective goods. Any claim shall be deemed waived unless made in writing to us within thirty (30) days from date it was or reasonably should have been discovered. Safety First!Follow good safety and industrial hygiene practices during handling and installation of all products and systems. Take necessary precautions and wear the appro- priate personal protective equip-ment as needed. Read material safety data sheets and related literature on products before specification and/or installation.