|
I . Concrete paving joints, horizontal traffic surfaces.
<br />a. Products:
<br />1) Bostik, "Chem -Calk 950".
<br />2) Sonnebom, "SL-1".
<br />3) Tremco, Vulkem 45
<br />b. Type and Grade S (singe component) and NS (nonsag).
<br />C. Class 25
<br />d. Exposure: T (traffic).
<br />e. Substrate: O
<br />2.3 FIRESTOPPING, GENERAL
<br />A. Compatibility: Provide through -penetration firestop systems that are compatible with one another with the substrates forming
<br />openings, and with the items, if any, penetrating through -penetration firestop system under conditions of service and application,
<br />as demonstrated by through -penetration firestop system manufacturers based on testing and field experience.
<br />B. Accessories: Provide components for each through -penetration firestop system that are needed to install fill materials and comply
<br />with "Performance Requirements" article. Use only components specified through penetration firestop system manufacturer and
<br />approved by the qualified testing and inspecting agency for firestop systems indicated. Accessories include, but are not limited to,
<br />the following items:
<br />1. Permanent forming/damming/backing materials, include the following:
<br />a. Slat -/rock -wood -fiber insulation.
<br />b. Sealants in combination with other forming/damming/backing materials to prevent leakage of full materials in liquid
<br />state.
<br />C. Fire -rated form board.
<br />d. Fillers for sealants.
<br />2. Temporary forming materials.
<br />3. Substrate primers.
<br />4. Collars.
<br />5. Steel sleeves.
<br />6. Products:
<br />a. 3M Fire Prevention Products.
<br />b. Hilti Firestop Systems
<br />C. International Protective Coatings Corporation (IPC, a Division of W.R. Grace).
<br />d. Tremco Inc.
<br />2.4 JOINT -SEALANT BACKING
<br />A. General: Provide sealant backings of material and type that are nonstaining; are compatible with joint substrates, sealants, prim-
<br />ers, and other joint fillers; and are approved for applications indicated by sealant manufacturer based on field experience and
<br />laboratory testing.
<br />B. Cylindrical Sealant Backings: ASTM C 1330, of size and density to control sealant depth and otherwise contribute to producing
<br />optimum sealant performance:
<br />1. Type: C (closed -cell material with a surface skin).
<br />C. Bond -Breaker Tape: Polyethylene tape or other plastic tape recommended by sealant manufacturer for preventing sealant from
<br />adhering to rigid, inflexible joint -filler materials or joint surfaces at back of joint where such adhesion would result in sealant
<br />failure. Provide self-adhesive tape where applicable.
<br />2.5 MISCELLANEOUS MATERIALS
<br />A. Primer: Material recommended by joint sealant manufacturer where required for adhesion of sealant to joint substrates indi-
<br />cated, as determined from preconstruction joint -sealant -substrate tests and field tests.
<br />B. Cleaners for Nonporous Surfaces: Chemical cleaners acceptable to manufacturers of sealants and sealant backing materials, free
<br />of oily residues or other substances capable of staining or harming joint substrates and adjacent nonporous surfaces in any way,
<br />and formulated to promote optimum adhesion of sealants with joint substrates.
<br />C. Masking Tape: Nonstaining, nonabsorbent material compatible with joint sealants and surfaces adjacent to joints.
<br />PART 3 - EXECUTION
<br />3.1 INSTALLATION
<br />A. Contractor performing work must be one the Sealant Manufacturer's Approved Applicators.
<br />B. Surface Cleaning of Joints: Clean out joints immediately before installing joint sealants.
<br />1. Remove foreign material from joint substrates that could interfere with adhesion of joint sealant.
<br />2. Clean porous joint substrate surfaces by brushing, grinding, blast cleaning, mechanical abrading, or a combination of these
<br />methods to produce a clean, sound substrate capable of developing optimum bond with joint sealants. Remove loose par-
<br />ticles remaining from above cleaning operations by vacuuming or blowing out joints with oil -free compressed air.
<br />3. Remove laitance and form -release agents from concrete.
<br />4. Clean nonporous surfaces with chemical cleaners or other means that do not stain, harm substrates, or leave residues could
<br />interfere with adhesion of joint sealants.
<br />5. All surfaces to be caulked shall be clean and dry.
<br />C. Joint Priming: Prime joint substrates where recommended in writing by joint sealant manufacturer, based on preconstruction
<br />joint -sealant -substrate tests or prior experience. Confine primers to areas of joint -sealant bond; do not allow spillage or migra-
<br />tion onto adjoining surfaces.
<br />D. Masking Tape: Use masking tape where required to prevent contact of sealant with adjoining surfaces that otherwise would
<br />be permanently stained or damaged by such contact or by cleaning methods required to remove sealant smears. Remove tape
<br />immediately after tooling without disturbing joint seal.
<br />E. Sealant Installation: Comply with recommendations in ASTM C 1193 for use of joint sealants as applicable to materials, appli-
<br />cations, and conditions indicated.
<br />F. Install sealant backings to support sealants during application and at position required to produce optimum sealant movement
<br />capability.
<br />1. Do not leave gaps between ends of sealant backings.
<br />2. Do not stretch, twist, puncture, or tear sealant backings.
<br />3. Remove absorbent sealant backings that have become wet before sealant application and replace them with dry materials.
<br />G. Install bond -breaker tape behind sealants where sealant backings are not used between sealants and back of joints.
<br />H. Place sealants so they directly contact and fully wet joint substrates.
<br />1. Completely fill recesses provided for each joint configuration.
<br />2. Produce uniform, cross -sectional shapes and depths that allow optimum sealant movement capability.
<br />3. All deep cracks shall be filled to within 1/2 inch of the surface with an appropriate back-up material and caulked with a
<br />caulking gun. Caulking beads shall be smooth and straight.
<br />4. Caulk around all door and storefront openings and where noted on the drawings.
<br />I. Masonry control joints shall be caulked with a high -quality paintable urethane caulk. Control depth of caulk at 3/8 inch to 1/2 inch
<br />with a continuous closed -cell rod.
<br />J. Tooling of Nonsag Sealants: Immediately after sealant application and before skinning or curing begins, tool sealants to form
<br />smooth, uniform beads, to eliminate air pockets, and to ensure contact and adhesion of sealant with sides of joint.
<br />1. Remove excess sealants from surfaces adjacent to joint.
<br />2. Use tooling agents that are approved by sealant manufacturer and that do not discolor sealants or adjacent surfaces.
<br />3. Joint Configuration: Concave joint configuration per Figure 5A in ASTM C 1193, unless otherwise indicated.
<br />K. Clean excess sealants or sealant smears adjacent to joints as installation progresses by methods and with cleaning materials
<br />approved in writing by manufacturers of joint sealants and of products in which joints occur.
<br />L. Through -Penetration Firestop Installation: .
<br />1. General: Installation through -penetration systems to comply with "Performance Requirements" of the firestop system
<br />manufacturer's written installation instructions and published drawings for the applications indicated.
<br />END OF SECTION 07920
<br />SECTION 08211 - FLUSH WOOD DOORS
<br />PART 1 - GENERAL
<br />1.1 SUMMARY
<br />A. This Section includes solid and hollow core doors as follows:
<br />1. Doors with wood -veneer faces.
<br />1.2 SUBMITTALS
<br />A. Product Data: For each type of door
<br />B. Shop Drawings: s: Indicate location size and hand of each door; elevation of each kind of door; construction details; location and
<br />� ,
<br />extent of hardware blocking; fire ratings; and other pertinent data.
<br />C. Samples: For each face material and finish upon request of the Architect.
<br />1.3 QUALITY ASSURANCE
<br />A. Quality Standard: Comply with NWWDA I.S.1-A, "Architectural Wood Flush Doors." Delete paragraph and subparagraph below
<br />if no fire -rated doors.
<br />B. Fire -Rated Wood Doors: Doors that are listed and labeled by a testing and inspecting agency acceptable to authorities having
<br />jurisdiction, for fire ratings indicated.
<br />PART 2 - PRODUCTS
<br />2.1 MANUFACTURERS
<br />A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated
<br />into the Work include, but are not limited to, the following:
<br />1. Ampco Products, Inc.
<br />2. Marlite.
<br />3. Mohawk Flush Doors, Inc.
<br />4. Weyerhaeuser Company.
<br />2.2 DOOR CONSTRUCTION
<br />A. Doors for Opaque Finish:
<br />1. Grade: Custom.
<br />2. Faces for Exterior Doors: Medium -density overlay.
<br />3. Faces for Interior Doors: Any closed -grain hardwood of mill option.
<br />B. Hollow -Core Doors:
<br />1. Core: Institutional hollow core.
<br />2. Finish: Prefinished Factory
<br />3. Frame: Prehung.
<br />C. Blocking: For hollow -core doors, provide blocking as needed to eliminate through -bolting hardware.
<br />D. Provide doors with glued -block
<br />2.3 FABRICATION
<br />A. Fabricate doors in sizes indicated for Project -site fitting.
<br />B. Factory fit doors to suit frame -opening sizes indicated. Comply with clearance requirements of referenced quality standard for
<br />fitting.
<br />C. Factory machine doors for hardware that is not surface applied.
<br />PART 3 - EXECUTION
<br />3.1 INSTALLATION
<br />A. Install doors to comply with manufacturer's written instructions, referenced quality standard, and as indicated.
<br />B. Factory -Fitted Doors: Align in frames for uniform clearance at each edge.
<br />C. Factory -Finished Doors: Restore finish before installation if fitting or machining is required at Project site.
<br />END OF SECTION 08211
<br />SECTION 09260 - GYPSUM BOARD ASSEMBLIES
<br />PART 1 - GENERAL
<br />1.1 SUMMARY
<br />A. This Section includes the following:
<br />1. Interior gypsum wallboard.
<br />2. Exterior gypsum board panels for ceilings and soffits.
<br />3. Non -load -bearing steel framing.
<br />1.2 SUBMITTALS
<br />A. Product Data: For each product indicated.
<br />B. Samples: For each textured finish indicated and on same backing indicated for Work upon request of Architect.
<br />1.3 QUALITY ASSURANCE
<br />A. Fire -Test -Response Characteristics: For gypsum board assemblies with fire -resistance ratings, provide materials and construction
<br />identical to those tested in assembly indicated according to ASTM E 119 by an independent testing and inspecting agency accept-
<br />able to authorities having jurisdiction.
<br />B. Sound Transmission Characteristics: For gypsum board assemblies with STC ratings, provide materials and construction identical
<br />to those tested in assembly indicated according to ASTM E 90 and classified according to ASTM E 413 by a qualified independent
<br />testing agency.
<br />PART 2 - PRODUCTS
<br />2.1 MANUFACTURERS
<br />A. In other Part 2 articles where subparagraph titles below introduce lists, the following requirements apply for product selection:
<br />1. Available Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but
<br />are not limited to, the products specified.
<br />2.2 STEEL FRAMING
<br />A. Steel Framing, General: Comply with ASTM C 754 for conditions indicated.
<br />1. Steel Sheet Components: Metal complying with ASTM C 645 requirements.
<br />a. Protective Coating:
<br />1) Interior Applications: ASTM A 653/A 653M, G40, hot -dip galvanized.
<br />2) Exterior Applications: ASTM A 653/A 653M, G60, hot -dip galvanized zinc coating.
<br />B. Suspended Ceiling and Soffit Framing:
<br />1. Tie Wire: ASTM A 641 /A 641 M, Class 1 zinc coating, soft temper, 0.0625-inch- diameter wire, or double strand of 0.0475-
<br />inch-diameter wire.
<br />2. Hanger Attachments to Concrete:
<br />a. Powder -Actuated Fasteners: Suitable for application indicated, fabricated from corrosion -resistant materials, with
<br />clips or other devices for attaching hangers of type indicated, and capable of sustaining, without failure, a load equal
<br />to 10 times that imposed by construction as determined by testing according to ASTM E 1190 by a qualified indepen-
<br />dent testing agency.
<br />3. Wire Hangers: ASTM A 641/A 641M, Class 1 zinc coating, soft temper, 0.162-inch diameter.
<br />4. Carrying Channels: Cold -rolled, commercial -steel sheet with a base metal thickness of 0.0538 inch, a minimum 1/2-inch-
<br />wide flange, and in depth indicated.
<br />5. Furring Channels (Furring Members):
<br />- a. Steer Studs: ASTMC 645, in depth -indicated. - x
<br />b. "Z" Shaped, Rigid Furring Channels: ASTM C 645, 1 1/2 inch deep.
<br />C. Grid Suspension System for Interior Ceilings: ASTM C 645, direct -hung system composed of main beams and cross -furring mem-
<br />bers that interlock.
<br />1. Products:
<br />a. Armstrong World Industries, Inc.; Furring Systems/Drywall
<br />b. Chicago Metallic Corporation; Fire Front 630 System.
<br />C. USG Interiors, Inc.; Drywall Suspension System.
<br />D. Partition and Soffit Framing:
<br />1. Steel Studs and Runners: ASTM C 645, in depth indicated.
<br />2. Deep -Leg Deflection Track: ASTM C 645 top runner with 2-inch-deep flanges.
<br />3. Flat Strap and Backing Plate: Steel sheet for blocking and bracing in length and width indicated.
<br />a. Minimum Base Metal Thickness: 0.0179 inch or as indicated.
<br />4. Cold -Rolled Channel Bridging: 0.0538-inch bare steel thickness, with minimum 1/2-inch-wide flange, and in depth indi-
<br />cated.
<br />a. Clip Angle: 1-1/2 by 1-1/2 inch, 0.068-inch-thick, galvanized steel.
<br />5. Hat -Shaped, Rigid Furring Channels: ASTM C 645, in depth indicated.
<br />a. Minimum Base Metal Thickness: 0.0179 inch.
<br />b. Tie Wire: ASTM A 641/A 641M, Class 1 zinc coating, soft temper, 0.0625-inch- (1.59-mm-) diameter wire, or double
<br />strand of 0.0475-inch-diameter wire.
<br />6. Fasteners for Metal Framing: Of type, material, size, corrosion -resistance, holding power, and other properties required to
<br />fasten steel members to substrates.
<br />2.3 PANEL PRODUCTS
<br />A. Panel Size, General: Provide in maximum lengths and widths available that will minimize joints in each area and correspond with
<br />support system indicated.
<br />B. Gypsum Wallboard: ASTM C 36.
<br />1. Regular Type: In thickness indicated and with long edges tapered.
<br />2. Type X: In thickness indicated and with long edges tapered.
<br />C. Flexible Gypsum Wallboard: ASTM C 36, manufactured to bend to fit tight radii and to be more flexible than standard regular -type
<br />panels of the same thickness, 1/4 inch thick, and with long edges tapered. Apply in double layer at curved assemblies.
<br />D. Sag -Resistant Gypsum Wallboard: ASTM C 36, manufactured to have more sag resistance than regular -type gypsum board, 1/2
<br />inch (12.7 mm) thick, and with long edges tapered. Apply on ceiling surfaces.
<br />E. Exterior Gypsum Panels for Ceilings and Soffits:
<br />1. Glass -Mat Gypsum Sheathing Board: ASTM C 1177/C 1177M, with core type and in thickness indicated.
<br />a. Product: G-P Gypsum Corp; Dens -Glass Gold.
<br />2.4 TRIM ACCESSORIES
<br />A. Interior Trim: ASTM C 1047.
<br />1. Cornerbead: Use at outside corners.
<br />2. Bullnose Bead: Use at outside corners .
<br />3. LC -Bead: Use at exposed panel edges.
<br />B. Exterior Trim: ASTM C 1047, hot -dip galvanized steel sheet or rolled zinc.
<br />1. Cornerbead: Use at outside corners.
<br />2. LC -Bead: Use at exposed panel edges.
<br />3. Expansion (Control) Joint: One-piece, rolled zinc with V-shaped slot and removable strip covering slot opening.
<br />C. Aluminum Trim: Extruded accessories of profiles and dimensions indicated.
<br />1. Products:
<br />a. Fry Reglet Corp.; As indicated by designation on Drawings.
<br />b. Gordon, Inc..
<br />C. MM Systems Corporation; As indicated by designation on Drawings.
<br />d. Pittcon Industries; As indicated by designation on Drawings.
<br />2. Aluminum: Alloy and temper with not less than the strength and durability properties of ASTM B 221, alloy 6063-T5.
<br />3. Finish: Corrosion -resistant primer compatible with joint compound and finish materials specified.
<br />2.5 JOINT TREATMENT MATERIALS
<br />A. General: Comply with ASTM C 475.
<br />B. Joint Tape:
<br />1. Interior Gypsum Wallboard: Paper.
<br />2. Exterior Gypsum Soffit Board: Paper.
<br />3. Glass -Mat Gypsum Sheathing Board: 10-by-10 glass mesh.
<br />C. Joint Compound for Interior Gypsum Wallboard: For each coat use formulation that is compatible with other compounds applied
<br />on previous or for successive coats.
<br />1. Prefilling: At open joints and damaged surface areas, use setting -type taping compound.
<br />2. Embedding and First Coat: For embedding tape and first coat on joints, flanges of trim accessories, and fasteners, use
<br />setting -type taping compound.
<br />3. Fill Coat: For second coat, use setting -type, sandable topping compound.
<br />4. Finish Coat: For third coat, use setting -type, sandable topping compound.
<br />5. Skim Coat: For final coat of Level 5 finish, use setting -type, sandable topping compound.
<br />D. Joint Compound for Exterior Applications:
<br />1. Exterior Gypsum Soffit Board: Use setting -type taping and setting -type, sandable topping compounds.
<br />2. Glass -Mat Gypsum Sheathing Board: As recommended by manufacturer.
<br />E. Joint Compound for Tile Backing Panels:
<br />1. Water -Resistant Gypsum Backing Board: Use setting -type taping and setting -type, sandable topping compounds.
<br />2. Glass -Mat, Water -Resistant Backing Panel: As recommended by manufacturer.
<br />3. Cementitious Backer Units: As recommended by manufacturer.
<br />2.6 AUXILIARY MATERIALS
<br />A. General: Provide auxiliary materials that comply with referenced installation standards and manufacturer's written recommenda-
<br />tions.
<br />1. Use screws complying with ASTM C 954 for fastening panels to steel members from 0.033 to 0.112 inch (0.84 to 2.84 mm)
<br />thick.
<br />2. For fastening Cementitious backer units, use screws of type and size recommended by panel manufacturer.
<br />PART 3 - EXECUTION
<br />3.1 NON -LOAD -BEARING STEEL FRAMING INSTALLATION
<br />ASTM E 84.
<br />a. Smoke -Developed Index: 450 or less.
<br />C. Seismic Standard: Comply with the following:
<br />1. ASTM E 580.
<br />2. CISCA's "Recommendations for Direct -Hung Acoustical Tile and Lay -in Panel Ceilings --Seismic Zones 0-2."
<br />3. Mockups: Build mockups to verify selections made under sample Submittals and to
<br />PART 2 - PRODUCTS
<br />2.1 MANUFACTURERS
<br />A. In other Part 2 articles where titles below introduce lists, the following requirements apply for product selection:
<br />1. Available Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but
<br />are not limited to, the products specified.
<br />2.2 GENERAL
<br />A. Acoustical Tile Standard: Comply with ASTM E 1264.
<br />B. Metal Suspension System Standard: Comply with ASTM C 635.
<br />C. Attachment Devices: Size for five times the design load indicated in ASTM C 635, Table 1, "Direct Hung," unless otherwise indi-
<br />cated.
<br />1. Anchors in Concrete: Expansion anchors fabricated from corrosion -resistant materials, with holes or loops for attaching
<br />hangers of type indicated and with capability to sustain, without failure, a load equal to five times that imposed by ceiling
<br />construction, as determined by testing perASTM E 488 or ASTM E 1512 as applicable, conducted by a qualified testing and
<br />inspecting agency.
<br />2. Power -Actuated Fasteners in Concrete: Fastener system of type suitable for application indicated, fabricated from cor-
<br />rosion -resistant materials, with clips or other accessory devices for attaching hangers of type indicated, and with capabil-
<br />ity to sustain, without failure, a load equal to 10 times that imposed by ceiling construction, as determined by testing per
<br />ASTM E 1190, conducted by a qualified testing and inspecting agency.
<br />D. Wire Hangers, Braces, and Ties: Zinc -coated carbon -steel wire; ASTM A 641/A 641 M, Class 1 zinc coating, soft temper.
<br />1. Size: Select wire diameter so its stress at three times hanger design load (ASTM C 635, Table 1, "Direct Hung") will be less
<br />than yield stress of wire, but provide not less than 0.106-inch- diameter wire.
<br />E. Seismic struts and seismic clips.
<br />F. Metal Edge Moldings and Trim: Type and profile indicated or, if not indicated, manufacturer's standard moldings for edges and
<br />penetrations that fit acoustical tile edge details and suspension systems indicated; formed from sheet metal of same material and
<br />finish as that used for exposed flanges of suspension system runners.
<br />2.3 ACOUSTICAL TILES
<br />A. General: Acoustical tiles shall be 24" x 48" x 5/8" matte finish mineral fiber ceiling boards and shall conform to Federal Specifica-
<br />tion SS-S-118a, Class 25. Light reflectance shall be no less than 75% and have NRC minimum range of .50 - .60.
<br />B. Products:
<br />1. Armstrong "Cortega".
<br />2. Celotex "Baroque"
<br />3. U.S.G. "Omni Fissured"
<br />A. General: Comply with ASTM C 754, and ASTM C 840 requirements that apply to framing installation.
<br />g
<br />B. Suspended Ceiling and Soffit Framing:
<br />2.4
<br />METAL SUSPENSION SYSTEM 0
<br />1. Suspend ceiling hangers plumb and free from contact with insulation or other objects within ceiling plenum that are not part
<br />of supporting structural or ceiling suspension system. Splay hangers only where required to miss obstructions and offset
<br />A.
<br />General: The ceiling suspension system shall be an exposed grid system with exposed flanges having a factory applied white
<br />resulting horizontal forces by bracing, countersplaying, or other equally effective means.
<br />enamel finish with roll formed capped edges.
<br />2. Where width of ducts and other construction within ceiling plenum produces hanger spacings that interfere with the location
<br />1. Main Runner: DX-24 o
<br />of hangers required to support standard suspension system members, install supplemental suspension members and hang-
<br />2. Cross Tees: DX-424
<br />ers in form of trapezes or equivalent devices. Size supplemental suspension members and hangers to support ceiling loads
<br />3. Wall Angle: M6S
<br />within performance limits established by referenced standards.
<br />B.
<br />Products:
<br />3. Attach hangers to structural members. Do not support ceilings from or attach hangers to permanent metal forms, steel deck
<br />1. Donn Products, Inc., Westlake, OH.
<br />tabs, steel roof decks, ducts, pipes, or conduit.
<br />2. Acoustical Tile Supplier Standard Grid System.
<br />4. Screw furring to wood framing.
<br />C.
<br />Ceiling Suspension System: Direct hung; ASTM C 635, intermediate -duty structural classification.
<br />5. Wire -tie furring channels to supports, as required to comply with requirements for assemblies indicated.
<br />6. Grid Suspension System: Attach perimeter wall track or angle where grid suspension system meets vertical surfaces.
<br />Mechanically join main beam and cross -furring members to each other and butt -cut to fit into wall track.
<br />PART 3 -
<br />EXECUTION s
<br />C. Partition and Soffit Framing:
<br />3.1
<br />INSTALLATION s
<br />1. Where studs are installed directly against exterior walls, install isolation strip between studs and wall.
<br />2. Extend partition framing full height to structural supports or substrates above suspended ceilings, except where partitions
<br />10A. General: Install acoustical tile ceilings to comply with ASTM C 636 and seismic requirements indicated, per manufacturers writ -
<br />are indicated to terminate at suspended ceilings. Continue framing over frames for doors and openings and frame around
<br />ten instructions and CISCA's "Ceiling Systems Handbook."
<br />ducts penetrating partitions above ceiling to provide support for gypsum board.
<br />3. Frame door openings to comply with GA-600 and with gypsum board manufacturer's applicable written recommendations,
<br />B.
<br />Measure each ceiling area and establish layout of acoustical tiles to balance border widths at opposite edges of each ceiling. Avoid �
<br />unless otherwise indicated. Screw vertical studs at jambs to jamb anchor clips on door frames; install runner track section
<br />using less -than -half -width tiles at borders. e
<br />(for cripple studs) at head and secure to jamb studs.
<br />C.
<br />Suspend ceiling hangers from building's structural members, plumb and free from contact with insulation or other objects within 10
<br />a. Install two studs at each jamb, unless otherwise indicated.
<br />ceiling plenum. Splay hangers only where required to miss obstructions; offset resulting horizontal forces by bracing, counter-
<br />b. Extend jamb studs through suspended ceilings and attach to underside of floor or roof structure above.
<br />splaying, or other equally effective means. Where width of ducts and other construction within ceiling plenum produces hanger 1.
<br />4. Frame openings other than door openings the same as required for door openings, unless otherwise indicated. Install fram-
<br />spacings that interfere with location of hangers, use trapezes orequivalent devices.
<br />ing below sills of openings to match framing required above door heads.
<br />lDo not support ceilings directly from permanent etal forms or floor deck; anchor into concrete slabs.
<br />2. Do not attach hangers to steel deck tabs or to steel roof deck.
<br />3.2 PANEL PRODUCT INSTALLATION
<br />D.
<br />Install edge moldings and trim at perimeter of acoustical tile ceiling area and where necessary to conceal edges of acoustical units. I
<br />A. Gypsum Board: Comply with ASTM C 840 and GA-216.
<br />Screw attach moldings to substrate with concealed fasteners at intervals not more than 16 inches o.c. and not more than 3 inches
<br />1. Space screws a maximum of 12 inches o.c. for vertical applications.
<br />from ends, leveling with ceiling suspension system to a tolerance of 1/8 inch in 12 feet. Miter corners accurately and connect R
<br />2. On ceilings, apply gypsum panels before wall/partition board application to the greatest extent possible and at right angles
<br />securely. w
<br />to framing, unless otherwise indicated.
<br />E.
<br />Install suspension system runners so they are square and securely interlocked with one another. Remove and replace dented, bent,
<br />3. On partitions/walls, apply gypsum panels vertically (parallel to framing), unless otherwise indicated or required by fire-
<br />or kinked members.
<br />resistance -rated assembly, and minimize end joints.
<br />F.
<br />Install acoustical tiles in coordination with suspension system and exposed moldings and trim. Place splines or suspension system a
<br />a. Stagger abutting end joints not less than one framing member in alternate courses of board.
<br />flanges into kerfed edges so tile -to -tile joints are closed by double lap of material. Fit adjoining tile to form flush tight joints. 8
<br />b. At stairwells and other high walls, install panels horizontally, unless otherwise indicated or required by fire-resis-
<br />Scribe and cut tile for accurate fit at borders and around penetrations through tile. Hold tile field in compression by inserting leaf -
<br />tance-rated assembly.
<br />type, spring -steel spacers between tile and moldings, spaced 12 inches o.c.
<br />4. Single -Layer Fastening Methods: Apply gypsum panels to supports with steel drill screws.
<br />. ,_ .
<br />.,. Laminating,to Substrate. Comply with gypsu.r�9 �.3oard manufacturer's written- _ecommendatg�A�s--and temporarily brace or;
<br />.,
<br />fasten gypsum panels until fastening adhesive has set.
<br />END OF
<br />SECTION 09512
<br />B. Exterior Ceilings and Soffits: Apply exterior gypsum panels perpendicular to supports, with end joints staggered and located over
<br />supports.
<br />1. Fasten with corrosion -resistant screws.
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<br />3.3 FINISHING
<br />A. Installing Trim Accessories: For trim with back flanges intended for fasteners, attach to framing with same fasteners used for
<br />panels. Otherwise, attach trim according to manufacturer's written instructions.
<br />B. Finishing Gypsum Board Panels: Treat gypsum board joints, interior angles, edge trim, control joints, penetrations, fastener heads,
<br />surface defects, and elsewhere as required to prepare gypsum board surfaces for decoration.
<br />1. Prefill open joints and damaged surface areas.
<br />2. Apply joint tape over gypsum board joints, except those with trim having flanges not intended for tape.
<br />3. Glass -Mat Gypsum Sheathing Board: Finish according to manufacturer's written instructions for use as exposed soffit
<br />board.
<br />4. Glass -Mat, Water -Resistant Backing Panels: Finish according to manufacturer's written instructions.
<br />C. Gypsum Board Finish Levels: Finish panels to levels indicated below, according to ASTM C 840, for locations indicated:
<br />1. Level 4: Embed tape and apply separate first, fill, and finish coats of joint compound to tape, fasteners, and trim flanges at
<br />panel surfaces that will be exposed to view, unless otherwise indicated.
<br />END OF SECTION 09260
<br />SECTION 09512 - ACOUSTICAL TILE CEILINGS
<br />PART 1 - GENERAL
<br />1.1 SUMMARY
<br />A. This Section includes acoustical tiles and concealed suspension systems for ceilings.
<br />1.2 SUBMITTALS
<br />A. Product Data: For each product indicated.
<br />B. Samples: For each acoustical tile, for each concealed suspension system member and for each color and texture required.
<br />C. Product test reports.
<br />1.3 QUALITY ASSURANCE
<br />A. Acoustical Testing Agency Qualifications: An independent testing laboratory or an NVLAP-accredited laboratory.
<br />B. Fire -Test -Response Characteristics:
<br />1. Fire -Resistance Ratings: Where indicated, provide acoustical tile ceilings identical to those of assemblies tested for fire
<br />resistance per ASTM E 119 by UL or another testing and inspecting agency acceptable to authorities having jurisdiction.
<br />Ratings are indicated by design designations from UUs "Fire Resistance Directory" or from the listings of another testing
<br />and inspecting agency.
<br />a. Identify materials with appropriate markings of applicable testing and inspecting agency.
<br />2. Surface -Burning Characteristics: Acoustical tiles complying with ASTM E 1264 for Class A materials, when tested per
<br />PART 1 - GENERAL
<br />1.1 SUMMARY
<br />A. This Section includes the following:
<br />1. Wall base.
<br />1.2 SUBMITTALS
<br />A. Product Data: None.
<br />B. Samples: For each type of product indicated, in manufacturer's standard -size Samples but not less than 12 inches (300 mm) long,
<br />of each resilient product color, texture, and pattern required. Submit directly to the owner for approval.
<br />1.3 PROJECT CONDITIONS
<br />A. Maintain temperatures within range recommended by manufacturer, but not less than 70 deg F (21 deg C) or more than 95 deg F
<br />(35 deg C), in spaces to receive floor tile during the following time periods:
<br />1. 48 hours before installation.
<br />2. During installation.
<br />3. 48 hours after installation.
<br />B. After postinstallation period, maintain temperatures within range recommended by manufacturer, but not less than 55 deg F (13
<br />deg C) or more than 95 deg F (35 deg C).
<br />C. Install resilient products after other finishing operations, including painting, have been completed.
<br />1.4 EXTRA MATERIALS
<br />A. Furnish extra materials described below that match products installed and that are packaged with protective covering for storage
<br />and identified with labels describing contents.
<br />1. Furnish not less than 10 linear feet (3 linear m) for every 500 linear feet (150 linear m) or fraction thereof, of each type,
<br />color, pattern, and size of resilient product installed.
<br />PART 2 - PRODUCTS
<br />2.1 MANUFACTURERS
<br />A. Available Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are
<br />not limited to, products listed in other Part 2 articles.
<br />B. Products: Subject to compliance with requirements, provide one of the products listed in other Part 2 articles.
<br />2.2 COLORS AND PATTERNS
<br />A. Colors and Patterns: As selected from manufacturer's full range.
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