B. Do not install interior products until installation areas are enclosed and conditioned.

Transcription

1 GYPSUM BOARD SHAFT WALL ASSEMBLIES Section Page 1 of 6 PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: Gypsum board shaft wall assemblies. 1.3 ACTION SUBMITTALS A. Product Data: For each component of gypsum board shaft wall assembly. Indicate the following. 1. Clearly mark data sheets to show the materials and components proposed to meet the requirements of this section. 2. Installation instructions for the complete construction of shaft walls. 3. Requirements for construction of vertical shaft hoistway entranceways. 4. Requirements for construction of horizontal shaft wall assemblies and vertical vent shaft enclosure assemblies. 1.4 INFORMATIONAL SUBMITTALS A. Evaluation Reports: For shaft wall assemblies, from ICC-ES. 1.5 DELIVERY, STORAGE, AND HANDLING A. Store materials inside under cover and keep them dry and protected against weather, condensation, direct sunlight, construction traffic, and other potential causes of damage. Stack panels flat and supported on risers on a flat platform to prevent sagging. 1.6 FIELD CONDITIONS A. Environmental Limitations: Comply with ASTM C 840 requirements or with gypsum board manufacturer's written recommendations, or the following, whichever are more stringent. 1. Maintain temperature between 50 degrees Fahrenheit (28 degrees Celsius) minimum and 95 degrees Fahrenheit (53 degrees Celsius) maximum for 48 hours prior to gypsum board panel and joint treatment installation, and continuously during and after installation. 2. Maintain humidity below 60 percent for 48 hours prior to gypsum board panel and joint treatment installation, and continuously during and after installation. B. Do not install interior products until installation areas are enclosed and conditioned. C. Do not install panels that are wet, moisture damaged, or mold damaged. 1. Indications that panels are wet or moisture damaged include, but are not limited to, discoloration, sagging, and irregular shape.

2 GYPSUM BOARD SHAFT WALL ASSEMBLIES Section Page 2 of 6 2. Indications that panels are mold damaged include, but are not limited to, fuzzy or splotchy surface contamination and discoloration. PART 2 - PRODUCTS 2.1 PERFORMANCE REQUIREMENTS A. Fire-Resistance-Rated Assemblies: For fire-resistance-rated assemblies, provide materials and construction identical to those tested in assembly indicated according to ASTM E 119 by an independent testing agency. B. Structural Performance: 1. Provide gypsum board shaft-wall assemblies capable of withstanding the full airpressure loads indicated for maximum heights of partitions without failing and while maintaining an airtight and smoke-tight seal. Evidence of failure includes deflections exceeding limits indicated, bending stresses causing studs to break or to distort, and end-reaction shear causing track (runners) to bend or to shear and studs to become crippled. 2. Provide gypsum board shaft-wall assemblies for horizontal ceiling or duct enclosures capable of spanning distances indicated within deflection limits indicated. 3. Air-pressure loads and deflection limits are specified in "Gypsum Board Shaft Wall Assemblies" Article in Part GYPSUM BOARD SHAFT WALL ASSEMBLIES A. Fire-Resistance Rating: As indicated. A. Intermittent Air-Pressure Loads: Dumbwaiters - 5 lbf/sq. ft.(0.24 kpa); Elevators lbf/sq. ft.(0.36 kpa). B. Deflection Limit: L/360. C. Studs: Manufacturer's standard profile for repetitive members, corner and end members, and fire-resistance-rated assembly indicated. 1. Stud Sizes: Of lengths to fit required conditions: a. For Elevator and Dumbwaiter Shaft Enclosure Walls Which Contain Elevator Doors and Dumbwaiter Doors: 1) First Floor: 4 inch, 20 gage, C-H studs. 2) Upper Floors: Elevators - 6 inch, 20 gage, C-H studs; Dumbwaiters - 4 inch, 20 gage, C studs. D. Runner Tracks: Manufacturer's standard J-profile track with manufacturer's standard long-leg length, but at least 2 inches (51 mm) long and matching studs in depth. 1. Minimum Base-Metal Thickness: Manufacturer's standard thicknesses that comply with structural performance requirements for stud depth indicated. E. Insulation: Sound attenuation blankets.

3 GYPSUM BOARD SHAFT WALL ASSEMBLIES Section Page 3 of PANEL PRODUCTS A. Panel Size: Provide in maximum lengths and widths available that will minimize joints in each area and that correspond with support system indicated. B. Gypsum Shaft Liner Panels, Moisture- and Mold-Resistant Type X: ASTM C 1396/C 1396M; manufacturer's proprietary fire-resistive liner panels with moisture- and mold-resistant core and surfaces. 1. Products: Subject to compliance with requirements, provide the following: a. USG Corporation; Sheetrock Brand Mold Tough Gypsum Liner Panel. b. National Gypsum Company; Gold Bond BRAND 1 Fire-Shield Shaftliner XP. 2. Thickness: 1 inch (25.4 mm). 3. Long Edges: Double bevel. 4. Mold Resistance: ASTM D 3273, score of 10 as rated according to ASTM D C. Gypsum Board: As specified in Division 09 Section "Gypsum Board." 2.4 NON-LOAD-BEARING STEEL FRAMING A. Steel Framing Members: Comply with ASTM C 645 requirements for metal unless otherwise indicated. 1. Protective Coating: ASTM A 653/A 653M, G40 (Z120), hot-dip galvanized unless otherwise indicated. 2.5 AUXILIARY MATERIALS A. General: Provide auxiliary materials that comply with manufacturer's written recommendations. B. Trim Accessories: Cornerbead, edge trim, and control joints of material and shapes as specified in Division 09 Section "Gypsum Board" that comply with gypsum board shaft wall assembly manufacturer's written recommendations for application indicated. C. Steel Drill Screws: ASTM C 1002 unless otherwise indicated. D. Track Fasteners: Power-driven fasteners of size and material required to withstand loading conditions imposed on shaft wall assemblies without exceeding allowable design stress of track, fasteners, or structural substrates in which anchors are embedded. 1. Power-Actuated Anchors: Fastener system of type suitable for application indicated, fabricated from corrosion-resistant materials, with capability to sustain, without failure, a load equal to 10 times design load, as determined by testing according to ASTM E 1190 conducted by a qualified testing agency. E. Sound Attenuation Blankets: As specified in Division 09 Section "Gypsum Board." F. Acoustical Sealant: As specified in Division 09 Section "Gypsum Board." PART 3 - EXECUTION

4 GYPSUM BOARD SHAFT WALL ASSEMBLIES Section Page 4 of EXAMINATION A. Examine substrates to which gypsum board shaft wall assemblies attach or abut, with Installer present, including hollow-metal frames, elevator hoistway door frames, cast-in anchors, and structural framing. Examine for compliance with requirements for installation tolerances and other conditions affecting performance. B. Examine panels before installation. Reject panels that are wet, moisture damaged, or mold damaged. C. Verify that temperature and humidity requirements specified in "Project Conditions" article will be maintained for duration of project. D. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 PREPARATION A. Sprayed Fire-Resistive Materials: Coordinate with gypsum board shaft wall assemblies so both elements of Work remain complete and undamaged. Patch or replace sprayed fireresistive materials removed or damaged during installation of shaft wall assemblies to comply with requirements specified in Division 07 Section "Applied Fireproofing." 1. Before sprayed fire-resistive materials are applied, attach offset anchor plates or ceiling runner tracks to surfaces indicated to receive sprayed fire-resistive materials. Where offset anchor plates are required, provide continuous plates fastened to building structure not more than 24 inches (610 mm) o.c. B. After sprayed fire-resistive materials are applied, remove only to extent necessary for installation of gypsum board shaft wall assemblies and without reducing the fire-resistive material thickness below that which is required to obtain fire-resistance rating indicated. Protect remaining fire-resistive materials from damage. 3.3 INSTALLATION A. General: Install gypsum board shaft wall assemblies to comply with requirements of fireresistance-rated assemblies indicated, manufacturer's written installation instructions, and ASTM C 754 other than stud-spacing requirements. B. Install supplementary framing in gypsum board shaft wall assemblies around openings and as required for blocking, bracing, and support of gravity and pullout loads of fixtures, equipment, services, heavy trim, furnishings, wall-mounted door stops, and similar items that cannot be supported directly by shaft wall assembly framing. 1. Elevator Hoistway: At elevator hoistway-entrance door frames, provide jamb struts on each side of door frame. 2. Reinforcing: Where handrails directly attach to gypsum board shaft wall assemblies, provide galvanized steel reinforcing strip with inch (0.84-mm) minimum thickness of base metal (uncoated), accurately positioned and secured behind at least one layer of face panel.

5 GYPSUM BOARD SHAFT WALL ASSEMBLIES Section Page 5 of 6 C. Penetrations: At penetrations in shaft wall, maintain fire-resistance rating of shaft wall assembly by installing supplementary steel framing around perimeter of penetration and fire protection behind boxes containing wiring devices, elevator call buttons, elevator floor indicators, and similar items. D. Isolate perimeter of gypsum panels from building structure to prevent cracking of panels, while maintaining continuity of fire-rated construction. E. Control Joints: Install control joints according to ASTM C 840 and in specific locations approved by Architect, while maintaining fire-resistance rating of gypsum board shaft wall assemblies. F. Seal gypsum board shaft walls with acoustical sealant at perimeter of each assembly where it abuts other work and at joints and penetrations within each assembly. Install acoustical sealant to withstand dislocation by air-pressure differential between shaft and external spaces; maintain an airtight and smoke-tight seal; and comply with ASTM C 919 requirements or with manufacturer's written instructions, whichever are more stringent. G. Installation Tolerance: Install each framing member so fastening surfaces vary not more than 1/8 inch (3 mm) from the plane formed by faces of adjacent framing. 3.4 PROTECTION A. Protect installed products from damage from weather, condensation, direct sunlight, construction, and other causes during remainder of the construction period. B. Remove and replace panels that are wet, moisture damaged, or mold damaged. 1. Indications that panels are wet or moisture damaged include, but are not limited to, discoloration, sagging, and irregular shape. 2. Indications that panels are mold damaged include, but are not limited to, fuzzy or splotchy surface contamination and discoloration. 3.5 WALL BOARD FINISHING A. Finish gypsum board surfaces in accordance with levels noted below and as developed by Gypsum Association. 1. Walls above ceiling lines in corridors, rooms, spaces, unless otherwise noted: Level Walls used as a substrate for ceramic, quarry and other tile finishes: Level Walls, soffits and ceilings to receive Type II wall covering: Level Walls, soffits and ceilings to receive Type I wall covering: Level Walls, soffits and ceilings to receive paint: Level 5. B. After finishing is complete and before paint or wall covering, etc. is applied, inspect walls and make corrections to provide smooth surfaces, free from defects. 1. Walls shall be plumb and true. 2. All corners shall be plumb and square. 3.6 STENCILING

6 GYPSUM BOARD SHAFT WALL ASSEMBLIES Section Page 6 of 6 A. Stencil all rated and/or smoke rated shaft-wall assemblies with permanent 2-inch high letters. Identify the name and hourly rating approximately 8-inches above the ceiling every 25 feet on room side of shaft-wall and once in every space with a shaft-wall assembly. 1. Provide applicable label as follows: a. 1-HOUR SHAFT-WALL PROTECT ALL OPENINGS. END OF SECTION

7 NON-STRUCTURAL METAL FRAMING Section Page 1 of 7 PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Non-load-bearing steel framing systems for interior gypsum board assemblies. 2. Suspension systems for interior gypsum ceilings, soffits, and grid systems. B. Related Requirements: 1. Division 05 Section "Cold-Formed Metal Framing" for exterior and interior non-loadbearing wall studs. 1.3 ACTION SUBMITTALS A. Product Data: For each type of product indicated, including deflection tables indicating compliance with requirements. 1.4 INFORMATIONAL SUBMITTALS A. Evaluation Reports: For dimpled steel studs and runners, from ICC-ES. PART 2 - PRODUCTS 2.1 PERFORMANCE REQUIREMENTS A. Fire-Test-Response Characteristics: For fire-resistance-rated assemblies that incorporate nonload-bearing steel framing, provide materials and construction identical to those tested in assembly indicated, according to ASTM E 119 by an independent testing agency. B. STC-Rated Assemblies: For STC-rated assemblies, provide materials and construction identical to those tested in assembly indicated, according to ASTM E 90 and classified according to ASTM E 413 by an independent testing agency.

8 NON-STRUCTURAL METAL FRAMING Section Page 2 of 7 C. Structural Performance: Provide gypsum board assemblies capable of meeting the deflection limits specified in "Framing Systems" article for maximum heights of partitions without failing. Evidence of failure includes deflections exceeding limits indicated, bending stresses causing studs to distort and gypsum board to crack. 2.2 FRAMING SYSTEMS A. Framing Members, General: Comply with ASTM C 754 for conditions indicated. 1. Steel Sheet Components: Comply with ASTM C 645 requirements for metal unless otherwise indicated. 2. Protective Coating: ASTM A 653/A 653M, G60 (Z180), hot-dip galvanized unless otherwise indicated. B. Studs and Runners: ASTM C 645. Use either steel studs and runners or dimpled steel studs and runners. 1. Steel Studs and Runners: a. Minimum Base-Metal Thickness: inch (0.45 mm) (at first floor); inch (0.84 mm) (at second floor). b. Depth: As indicated on Drawings. c. Deflection Limit: L/ Dimpled Steel Studs and Runners: a. Minimum Base-Metal Thickness: inch (0.38 mm) (at first floor); inch (0.64 mm) (at second floor). b. Depth: As indicated on Drawings. c. Deflection Limit: L/240. C. Slip-Type Head Joints: Where indicated, provide the following: 1. Deflection Track: Steel sheet top runner manufactured to prevent cracking of finishes applied to interior partition framing resulting from deflection of structure above; in thickness not less than indicated for studs and in width to accommodate depth of studs. a. Products: Subject to compliance with requirements, provide one of the following: 1) Dietrich Metal Framing; SLP-TRK Slotted Deflection Track. 2) Steel Network Inc. (The); VertiTrack VTD Series. 3) Superior Metal Trim; Superior Flex Track System (SFT). D. Firestop Tracks: Top runner manufactured to allow partition heads to expand and contract with movement of the structure while maintaining continuity of fire-resistance-rated assembly indicated; in thickness not less than indicated for studs and in width to accommodate depth of studs. 1. Products: Subject to compliance with requirements, provide one of the following: a. Fire Trak Corp.; Fire Trak System attached to studs with Fire Trak Posi Klip. b. Metal-Lite, Inc.; The System. c. Steel Network Inc. (The); VertiTrack VTD Series.

9 NON-STRUCTURAL METAL FRAMING E. Product: Subject to compliance with requirements provide the following: Section Page 3 of 7 F. Cold-Rolled Channel Bridging: Steel, inch (1.34-mm) minimum base-metal thickness, with minimum 1/2-inch- (13-mm-) wide flanges. 1. Depth: As required for structural performance. 2. Clip Angle: Not less than 1-1/2 by 1-1/2 inches (38 by 38 mm), inch- (1.72-mm-) thick, galvanized steel. G. Hat-Shaped, Rigid Furring Channels: ASTM C Minimum Base-Metal Thickness: inch (0.45 mm). 2. Depth: 7/8 inch (22.2 mm). 2.3 AUXILIARY MATERIALS A. General: Provide auxiliary materials that comply with referenced installation standards. 1. Fasteners for Metal Framing: Of type, material, size, corrosion resistance, holding power and other properties required to fasten steel members to substrates. B. Isolation Strip at Exterior Walls: Provide one of the following: 1. Foam Gasket: Adhesive-backed, closed-cell vinyl foam strips that allow fastener penetration without foam displacement, 1/8 inch (3.2 mm) thick, in width to suit steel stud size. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine areas and substrates, with Installer present, and including welded hollow-metal frames, cast-in anchors, and structural framing, for compliance with requirements and other conditions affecting performance of the Work. B. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 PREPARATION A. Coordination with Sprayed Fire-Resistive Materials: 1. Before sprayed fire-resistive materials are applied, attach offset anchor plates or ceiling runners (tracks) to surfaces indicated to receive sprayed fire-resistive materials. a. Where Z-furring clips are required, install 2 inch long clips at 16 inches o.c., unless otherwise indicated.

10 NON-STRUCTURAL METAL FRAMING Section Page 4 of 7 b. Where offset anchor plates are required, provide continuous plates fastened to building structure not more than 24 inches (610 mm) o.c. 2. After sprayed fire-resistive materials are applied, remove them only to extent necessary for installation of non-load-bearing steel framing. Do not reduce thickness of fireresistive materials below that required for fire-resistance ratings indicated. Protect adjacent fire-resistive materials from damage. 3.3 INSTALLATION, GENERAL A. Installation Standard: ASTM C 754, or U.L. Design for fire-rated assembly. 1. Gypsum Board Assemblies: Also comply with requirements in ASTM C 840 that apply to framing installation. B. Verify that installation of metal stud walls and partitions is coordinated with locations and sizes of plumbing clean-outs and similar piping, fire extinguisher and electrical panels, and other built-in items occurring within the wall. 1. Depth of stud wall shall be adequate to completely enclose piping and cabinets and to maintain integrity of rated installations. C. Install supplementary framing, and blocking to support fixtures, equipment services, heavy trim, grab bars, toilet accessories, furnishings, fold-down shower seats, wall guards, handrails, wall mounted door stops, furnishings, monitors, or similar construction. 1. Provide horizontal blocking as indicated, or as required to provide secure attachment, as follows: a. At studs spaced 16 inches o.c. provide Dietrich metal framing's Danback wood blocking plate. b. Install with two #8 x 1-1/4 inch self-tapping sheet metal screws at each metal clip connector. Screws must penetrate clip, stud and wood. c. At studs spaced less than 16 inches o.c. provide FRT wood blocking. D. Install bracing at terminations in assemblies. E. Do not bridge building control and expansion joints with non-load-bearing steel framing members. Frame both sides of joints independently. 3.4 INSTALLING FRAMED ASSEMBLIES A. Install framing system components according to spacings indicated, but not greater than spacings required by referenced installation standards for assembly types. 1. Single-Layer Application: Maximum 16 inches (406 mm) o.c. unless otherwise indicated. 2. Multilayer Application: Maximum 16 inches (406 mm) o.c. unless otherwise indicated. 3. Tile Backing Panels: Maximum 16 inches (406 mm) o.c. unless otherwise indicated.

11 NON-STRUCTURAL METAL FRAMING Section Page 5 of 7 B. Where studs are installed directly against exterior masonry walls or dissimilar metals at exterior walls, install isolation strip between studs and exterior wall. C. Install studs so flanges within framing system point in same direction. D. Install tracks (runners) at floors and overhead supports. Extend framing full height to structural supports or substrates above suspended ceilings, except where partitions are indicated to terminate at suspended ceilings. Continue framing around ducts penetrating partitions above ceiling. 1. For walls up to 14 feet in height using inch thick (25 gage) studs, install coldrolled channel stiffeners at mid-points and attach with 3/8-inch pan head Type S screws driven through both flanges of stud and runner. 2. For walls over 14 feet high install stiffeners at third points and attach with 3/8-inch pan head Type S screws. 3. Slip-Type Head Joints: Where framing extends to overhead structural supports, install to produce joints at tops of framing systems that prevent axial loading of finished assemblies. 4. Fasten studs to both sides of bottom and top runners. 5. Door Openings: Screw vertical studs at jambs to jamb anchor clips on door frames; install runner track section (for cripple studs) at head and secure to jamb studs. a. Install two studs, minimum inch (20 gage) bare steel thickness, at each jamb, unless otherwise indicated. 6. Door Openings Over 4'-0" Wide: Frame opening header with double studs on edge and screwed together, cut to fit snugly between vertical jambs inside runner. Install additional runner and cripple studs as required above header. 7. Other Framed Openings: Frame openings other than door openings the same as required for door openings, unless otherwise indicated. Install framing below sills of openings to match framing required above door heads. 8. Openings up to 4'-0" wide: Frame the same as required for door openings, unless otherwise indicated. Install framing below sills of openings to match framing required above door heads. 9. Openings over 4'-0" wide: Frame opening header with double studs on edge and screwed together, cut to fit snugly between vertical jambs inside runner. Install additional runner and cripple studs as required above header. 10. Fire-Resistance-Rated Partitions: Install framing to comply with fire-resistance-rated assembly indicated and support closures and to make partitions continuous from floor to underside of solid structure. a. Firestop Track: Where required, install to maintain continuity of fire-resistancerated assembly indicated. 11. Sound-Rated Partitions: Install framing to comply with sound-rated assembly indicated. 12. Curved Partitions: a. Bend track to uniform curve and locate straight lengths so they are tangent to arcs.

12 NON-STRUCTURAL METAL FRAMING Section Page 6 of 7 b. Begin and end each arc with a stud, and space intermediate studs equally along arcs. On straight lengths of no fewer than two studs at ends of arcs, place studs 6 inches (150 mm) o.c. 13. Grab Bars and Folding Shower Seats: 14. Install inch thick (16 gage) studs at 8 inches o.c. for full length of grab bar or shower seat plus 16 inches beyond each end. 15. At Wall-Hung Cabinets and/or Casework: a. Install inch thick (22 gage) studs at 12 inches o.c. for full width of cabinetwork plus 12 inches beyond on each side of cabinetwork. 16. For Furr-Downs at Wall-Hung Cabinets and/or Casework, for Ducts and Pipes: a. Install inch thick (25 gage) studs, 16 inches o.c. before installation of ceiling grid so that grid angle will abut vertical portion of furr-down. 1) Use braced system for depths of 48 inches and over (vertically) and widths 72 inches and over. 2) Use unbraced system for furr-downs up to 24 inches by 24 inches. 17. For Control Joints: a. Install double studs back-to-back to create control joints. b. Space control joints 30 feet apart maximum. c. See details for dimension and materials between studs. 18. Bracing of Walls Above Ceilings: a. Where studs extend above ceilings, but not to structure, brace top with diagonal stud braces at approximately 36 inches o.c. b. Attach stud braces to galvanized steel angles secured to bottom side of structure. c. Install diagonal bracing at latch side of all door jambs. 19. Stud Framing at Cementitious Backer Units: a. Use 30-mil (~20 gage) studs at maximum spacing recommended by tile backer board manufacturer and to limit deflection to 1/360 for tile. 20. Hat-Shaped Furring Channels on Walls: a. Space 16 inches o.c. vertically or horizontally. b. For horizontal application install first channels 4 inches from floor and ceiling lines. c. Attach to substrate with suitable fasteners spaces 16 inches o.c. in alternate flanges. d. Install asphalt felt isolation strip between furring channel and exterior wall surfaces. 21. Single-Span Fixed Ceiling Framing: a. Stud framed ceilings may be installed at interior spaces not wider that 8 feet. At spans greater than 8 feet install suspended ceiling. b. Install runner channels or steel angles around perimeter. c. Space main framing members at 16 inches o.c. with cross bracing at 48 inches o.c. E. Direct Furring: 1. Screw to wood framing.

13 NON-STRUCTURAL METAL FRAMING Section Page 7 of 7 2. Attach to concrete or masonry with stub nails, screws designed for masonry attachment, or powder-driven fasteners spaced 24 inches (610 mm) o.c. F. Installation Tolerance: Install each framing member so fastening surfaces vary not more than 1/8 inch (3 mm) from the plane formed by faces of adjacent framing. 3.5 FIELD QUALITY CONTROL A. Periodic special inspection shall be provided by the special inspector, coordinated by the Contractor, during construction of non-load bearing walls per the requirements specified in Division 01 Specification "Structural Tests and Inspections". 3.6 CLEANING A. Remove trash, waste materials, and other debris from framing spaces. B. Remove residues from beverages and other liquids. END OF SECTION

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15 GYPSUM BOARD Section Page 1 of 12 PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Interior gypsum board. 2. Tile backing panels. 3. Sound Attenuation Blankets. B. Related Requirements: 1. Division 06 Section "Gypsum Sheathing" for gypsum sheathing for exterior walls. 2. Division 09 Section "Non-Structural Metal Framing" for non-structural framing and suspension systems that support gypsum board panels. 3. Division 09 Section "Gypsum Board Shaft Wall Assemblies" for metal shaft-wall framing, gypsum shaft liners, and other components of shaft-wall assemblies. 1.3 DEFINITIONS A. Wet Area: Where surfaces are soaked, saturated, or regularly and frequently subjected to moisture or liquids, usually water. B. Limited Water Exposure Area: Where surfaces are subjected to moisture or liquids but do not become soaked or saturated due to system design or time exposure. 1.4 ACTION SUBMITTALS A. Product Data: For each type of product. B. Samples: For the following products: 1. Trim Accessories: Full-size Sample in 12-inch- (300-mm-) long length for each trim accessory other than edge beads and control joints. 1.5 DELIVERY, STORAGE AND HANDLING A. Store materials inside under cover and keep them dry and protected against weather, humidity, condensation, direct sunlight, construction traffic, and other potential causes of damage. Stack panels flat and supported on risers on a flat platform to prevent sagging. 1.6 FIELD CONDITIONS A. Environmental Limitations: Comply with ASTM C 840 requirements or gypsum board manufacturer's written recommendations or the following, whichever are more stringent. 1. Maintain temperature between 50 degrees Fahrenheit (28 degrees Celsius) minimum and 95 degrees Fahrenheit (53 degrees Celsius) maximum for 48 hours prior to gypsum

16 GYPSUM BOARD Section Page 2 of 12 board panel and joint treatment installation and continuously during and after installation. 2. Maintain humidity below 60 percent for 48 hours prior to gypsum board panel and joint treatment installation and continuously during and after installation. B. Do not install panels that are wet, those that are moisture damaged, or those that are mold/mildew damaged. 1. Indications that panels are wet or moisture damaged include, but are not limited to, discoloration, sagging, or irregular shape. 2. Indications that panels are mold/mildew damaged include, but are not limited to, fuzzy or splotchy surface contamination or discoloration. C. Do not install interior products until installation areas are enclosed, watertight, and comply with Environmental Limitations paragraphs. PART 2 - PRODUCTS 2.1 PERFORMANCE REQUIREMENTS A. Fire-Resistance-Rated Assemblies: For fire-resistance-rated assemblies, provide materials and construction identical to those tested in assembly indicated according to ASTM E 119 by an independent testing agency. B. STC-Rated Assemblies: For STC-rated assemblies, provide materials and construction identical to those tested in assembly indicated according to ASTM E 90 and classified according to ASTM E 413 by an independent testing agency. 2.2 GYPSUM BOARD, GENERAL A. Size: Provide maximum lengths and widths available that will minimize joints in each area and that correspond with support system indicated. 2.3 INTERIOR GYPSUM BOARD A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. Georgia-Pacific Gypsum LLC. 2. Lafarge North America Inc. 3. National Gypsum Company. 4. USG Corporation. B. Gypsum Wallboard: ASTM C 1396/C 1396M. 1. Thickness: 5/8 inch (15.9 mm), unless noted otherwise. 2. Long Edges: Tapered and featured (rounded or beveled) for prefilling. C. Gypsum Board, Type X: ASTM C 1396/C 1396M. 1. Thickness: 5/8 inch (15.9 mm), unless noted otherwise. 2. Long Edges: Tapered.

17 GYPSUM BOARD Section Page 3 of 12 D. Flexible Gypsum Board: ASTM C 1396/C 1396M. Manufactured to bend to fit radii and to be more flexible than standard regular-type gypsum board of same thickness. 1. Thickness: 1/4 inch (6.4 mm). 2. Long Edges: Tapered. E. Gypsum Ceiling Board: ASTM C 1396/C 1396M. 1. Thickness: 1/2 inch (12.7 mm). 2. Long Edges: Tapered. F. Paperless Moisture- and Mold-Resistant Gypsum Board: ASTM C 1396/C 1396M. With moisture- and mold-resistant core and paper surfaces. 1. Products: Subject to compliance with requirements, provide one of the following: a. Georgia-Pacific Gypsum LLC; DensArmour Plus. b. TempleInland; GreenGlass Interior Gypsum Board. c. USG Corporation; Fiberock Interior Panels. 2. Core: 5/8 inch (15.9 mm), Type X. 3. Long Edges: Tapered. 4. Mold Resistance: ASTM D 3273, score of 10 as rated according to ASTM D SPECIALTY GYPSUM BOARD A. Acoustically Enhanced Gypsum Board: ASTM C 1396/C 1396M. Multilayer products constructed of two layers of gypsum boards sandwiching a viscoelastic sound-absorbing polymer core. 1. Products: Subject to compliance with requirements, provide one of the following: a. National Gypsum Company; Sound Break. b. Quiet Solution, Quiet Rock. 2. Core: 5/8 inch (15.9 mm), Type X. 3. Long Edges: Tapered. 2.5 TILE BACKING PANELS A. Glass-Mat, Water-Resistant Gypsum Backing Board: ASTM C 1178/C 1178M, with manufacturer's standard edges. 1. Products: Subject to compliance with requirements, provide one of the following: a. CertainTeed Corp.; GlasRoc Tile Backer. b. Georgia-Pacific Gypsum LLC; DensShield Tile Backer. 2. Core: 5/8 inch (15.9 mm), Type X. 3. Mold Resistance: ASTM D 3273, score of 10. B. Cementitious Backer Units: ANSI A118.9 and ASTM C 1288 or 1325, with manufacturer's standard edges. 1. Products: Subject to compliance with requirements, provide one of the following: a. CertainTeed Corp.; FiberCement BackerBoard. b. James Hardie Building Products, Inc.; Hardiebacker 500. c. National Gypsum Company, Permabase Cement Board. d. USG Corporation; DUROCK Cement Board. 2. Thickness: 5/8 inch (15.9 mm). 3. Mold Resistance: ASTM D 3273, score of 10 as rated according to ASTM D 3274.

18 GYPSUM BOARD Section Page 4 of TRIM ACCESSORIES A. Interior Trim: ASTM C Material: Galvanized or aluminum-coated steel sheet or rolled zinc. No paper-faced products. 2. Shapes: a. Cornerbead. b. LC-Bead: J-shaped; exposed long flange receives joint compound. c. Expansion (control) joint. d. Curved-Edge Cornerbead: With notched or flexible flanges. B. Aluminum Trim: Extruded accessories of profiles and dimensions indicated. 1. Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. Fry Reglet Corp. b. Gordon, Inc. c. Pittcon Industries. 2.7 JOINT TREATMENT MATERIALS A. General: Comply with ASTM C 475/C 475M. B. Joint Tape: 1. Paper-Faced Gypsum Board: Paper. 2. Tile Backing Panels: As recommended by panel manufacturer. C. Joint Compound for Interior Gypsum Board: For each coat use formulation that is compatible with other compounds applied on previous or for successive coats. 1. Prefilling: At open joints and damaged surface areas, use setting-type taping compound. 2. Embedding and First Coat: For embedding tape and first coat on joints, fasteners, and trim flanges, use setting-type taping compound. 3. Fill Coat: For second coat, use drying-type, all-purpose compound. 4. Finish Coat: For third coat, use drying-type, all-purpose compound. 5. Skim Coat: For final coat of Level 5 finish. As specified in Division 09 Section "Interior Painting." D. Joint Compound for Tile Backing Panels: 1. Cementitious Backer Units: As recommended by backer unit manufacturer. 2.8 AUXILIARY MATERIALS A. General: Provide auxiliary materials that comply with referenced installation standards and manufacturer's written recommendations. B. Laminating Adhesive: Adhesive or joint compound recommended for directly adhering gypsum panels to continuous substrate. C. Steel Drill Screws: ASTM C 1002, unless otherwise indicated.

19 GYPSUM BOARD Section Page 5 of Use screws complying with ASTM C 954 for fastening panels to steel members from to inch (0.84 to 2.84 mm) thick. 2. For fastening cementitious backer units, use screws of type and size recommended by panel manufacturer. D. Sound Attenuation Blankets: ASTM C 665, Type I (blankets without membrane facing) produced by combining thermosetting resins with mineral fibers manufactured from glass, slag wool, or rock wool. 1. Products: Subject to compliance with requirements, provide one of the following: a. CertainTeed Corporation, CertaPro AcoustaTherm Batts in walls. b. Owens-Corning, Sound Attenuation Batts in walls. c. Thermafiber, Inc., Sound Attenuation Fire Blankets (SAFB) in walls. 2. Fire-Resistance-Rated Assemblies: Comply with mineral-fiber requirements of assembly. 3. Thickness: a. Walls: 3 1/2 inch. 4. Surface Burning Characteristics: Flame Spread: 0-25; Smoke Development: E. Acoustical Joint Sealant: Manufacturer's standard nonsag, paintable, nonstaining latex sealant complying with ASTM C 834. Product effectively reduces airborne sound transmission through perimeter joints and openings in building construction as demonstrated by testing representative assemblies according to ASTM E Products: Subject to compliance with requirements, provide one of the following: a. Pecora Corporation; AC-20 FTR. b. USG Corporation; SHEETROCK Acoustical Sealant. F. Thermal Insulation: As specified in Division 07 Section "Thermal Insulation." PART 3 - EXECUTION 3.1 EXAMINATION A. Examine areas and substrates including welded hollow-metal frames and framing, with Installer present, for compliance with requirements and other conditions affecting performance. B. Examine panels before installation. Reject panels that are wet, moisture damaged or mold damaged. C. Verify that temperature and humidity requirements specified in "Project Conditions" article will be maintained for duration of project. D. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 INSTALLING SOUND ATTENUATION BLANKETS A. General: Install where indicated in accordance with manufacturer's recommendations.

20 GYPSUM BOARD Section Page 6 of 12 B. Walls: 1. Install after mechanical and electrical work is complete. 2. "Friction-fit" blankets between studs after cover material has been installed on one side. Wall cavities shall be completely filled, without gaps and voids. 3. Fit blankets tightly to mechanical and electrical items. 4. Where heights are over 8 feet and without a cover material, secure blankets in place with wire strands with first wire placed horizontally at 8 feet above floor, then spaced horizontally 2 feet apart. Stretch and tie wire strands at every fourth stud. 5. Pack insulation around door/window frames, between jamb studs, in boxed headers, in cracks, and other voids. 6. Do not install sound attenuation blankets in areas that are part of or exposed to return air plenums. 3.3 APPLYING AND FINISHING PANELS, GENERAL A. Comply with ASTM C 840 and GA Do not begin installation of gypsum panels until building is weathertight and meets conditioned space requirements specified in article "Field Conditions". B. Install ceiling panels across framing to minimize the number of abutting end joints and to avoid abutting end joints in central area of each ceiling. Stagger abutting end joints of adjacent panels not less than one framing member. Install ceiling panels to provide light contact at edges and ends with no more than 1/16 inch (1.5 mm) gap between panels. C. Install panels with face side out. Butt panels together for a light contact at edges and ends with not more than 1/16 inch (1.5 mm) of open space between panels. Do not force into place. 1. Install panels on high priority walls first and then lesser priority walls as indicated and as required by authorities having jurisdiction. 2. Install acoustical sealant at electrical boxes, and similar penetrations and at both faces of through penetrations. D. At Exterior Walls: Where penetrations are necessary in gypsum board seal completely with acoustical sealant. E. At Floor Slab: For rated and non-rated walls leave 1/4 inch minimum, 1/2 inch maximum space between floor slab and bottom edge of gypsum board. F. At Bottom of Deck (top of panel): Where gypsum board extends to bottom of deck, cope gypsum board to shapes of flutes, irregular shapes, bar joists, precast shapes, etc. to fit tight against deck for final finishing. A maximum gap of 1/4 inch is allowed. Install required sealant/caulk in gap. See drawings for requirements. G. At Hollow Metal Door and Window Openings: 1. Install gypsum board with 1/2 inch minimum penetration into throat of door frames and view window frames. H. Locate edge and end joints over supports, except in ceiling applications where intermediate supports or gypsum board back-blocking is provided behind end joints. Do not place tapered

21 GYPSUM BOARD Section Page 7 of 12 edges against cut edges or ends. Stagger vertical joints on opposite sides of partitions. Do not make joints other than control joints at corners of framed openings. I. Form control and expansion joints with space between edges of adjoining gypsum panels. J. Isolate perimeter of gypsum board applied to non-load-bearing partitions at structural abutments, except floors. Provide 1/4- to 1/2-inch- (6.4- to 12.7-mm-) wide spaces at these locations and trim edges with edge trim where edges of panels are exposed. Seal joints between edges and abutting structural surfaces with acoustical sealant. K. Attachment to Steel Framing: Attach panels so leading edge or end of each panel is attached to open (unsupported) edges of stud flanges first. 1. Proceed with attachment from board center toward ends and edges. L. STC-Rated Assemblies: Seal construction at perimeters, behind control joints, and at openings and penetrations with a continuous bead of acoustical sealant. Install acoustical sealant at both faces of partitions at perimeters and through penetrations. Comply with ASTM C 919 and with manufacturer's written recommendations for locating edge trim and closing off sound-flanking paths around or through assemblies, including sealing partitions above acoustical ceilings. M. Install sound attenuation blankets before installing gypsum panels unless blankets are readily installed after panels have been installed on one side. 3.4 APPLYING INTERIOR GYPSUM BOARD A. Install interior gypsum board in the following locations: 1. Type X: Vertical surfaces unless otherwise indicated. 2. Flexible Type: Apply in double layer at curved assemblies. 3. Ceiling Type: Ceiling surfaces. 4. Moisture- and Mold-Resistant Type: a. Paperless: Walls subject to incidental wetting and not scheduled to receive tile, including but not limited to behind or adjacent to plumbing fixtures, prefabricated tubs or showers, equipment with water connections, janitor sinks, clinical sinks, and scrub sinks. 5. Acoustically Enhanced Type: Where indicated on the Drawings.. B. Single-Layer Application: 1. On ceilings in spaces where partitions do not extend above ceiling, apply gypsum panels before wall/partition board application to greatest extent possible and at right angles to framing unless otherwise indicated. 2. On partitions/walls/barriers, apply gypsum panels vertically (parallel to framing), unless otherwise required by fire-resistance-rated assembly, and minimize end joints. a. Stagger abutting end joints not less than one framing member in alternate courses of panels. b. Locate horizontal joints above finish ceiling, except where ceiling height is greater than 10'-0" (3m) in spaces without a ceiling horizontal joint shall be at 8'-0" (2.4m) minimum above finish floor. 3. Fastening Methods: Apply gypsum panels to supports with steel drill screws.

22 GYPSUM BOARD Section Page 8 of 12 a. Attach all gypsum board with screws 3/8 inch to 1/2 inch from edges and space at no more than 8 inches on center at edges and 12 inches on center in the field or to comply with tested assembly, whichever are more stringent. Drive screws so head rests in slight dimple without cutting face surface or fracturing core. 4. Comply with requirements of tested assembly indicated. C. Multilayer Application: 1. On ceilings, apply gypsum board indicated for base layers before applying base layers on walls/partitions; apply face layers in same sequence. Apply base layers at right angles to framing members and offset face-layer joints not less than one framing member, 16 inches (400 mm) minimum, from parallel base-layer joints, unless otherwise indicated or required by fire-resistance-rated assembly. 2. On partitions/walls/barriers, apply gypsum board indicated for base layers and face layers vertically (parallel to framing) with joints of base layers located over stud or furring member and face-layer joints offset at least one stud or furring member with base-layer joints, unless otherwise indicated or required by fire-resistance-rated assembly. Stagger joints on opposite sides of walls/partitions/barriers. 3. Fastening Methods: Fasten base layers and face layers separately to supports with screws. a. Non-Rated Construction: Attach first layer to studs and runners with specified screws. Space screws at 8 inches o.c., staggered at joint and 12 inches on center at intermediate studs. Install second layer in accordance with manufacturer's recommendations. 4. Comply with requirements of tested assembly indicated. D. Fire-Rated Construction: Install the required number of layers of Type "C" or Type "X" gypsum board with joints offset and screws spaced to meet requirements for rated construction. 1. Comply with requirements of tested assembly indicated. E. Laminating to Substrate: Where gypsum panels are indicated as directly adhered to a substrate (other than studs, joists, furring members, or base layer of gypsum board), comply with gypsum board manufacturer's written recommendations and temporarily brace or fasten gypsum panels until fastening adhesive has set. F. Curved Surfaces: 1. Non-Rated Partitions: Install panels horizontally (perpendicular to supports) and unbroken, to extent possible, across curved surface plus 12 inches (300-mm) long straight sections at ends of curves and tangent to them. 2. For double-layer construction, fasten base layer to studs with screws 16 inches (400 mm) o.c. Center gypsum board face layer over joints in base layer, and fasten to studs with screws spaced 12 inches (300 mm) o.c. 3.5 APPLYING TILE BACKING PANELS A. Cementitious Backer Units: ANSI A108.11, at wet areas including but not limited to showers, tubs, and where indicated. 1. Treat cuts, edges of utility holes, fastener beads, joints and intersections with thinned tile adhesive.

23 GYPSUM BOARD Section Page 9 of 12 B. Limited Water Exposure Areas: Install moisture- and mold-resistant gypsum board panels immediately adjacent to showers, tubs and other wet areas to produce a flat surface. C. Where tile backing panels abut other types of panels in same plane, shim boards to produce a uniform plane across panel surfaces. 1. Fill gap with silicone calk. Avoid getting calk on board face. D. Space fasteners in panels that are tile substrates a maximum of 8 inches (203.2 mm) o.c. E. For Fire-Rated Walls: Install fire-rated moisture- and mold-resistant gypsum board over firerated gypsum board, if required to achieve rating. 3.6 INSTALLING TRIM ACCESSORIES A. General: For trim with back flanges intended for fasteners, attach to framing with same fasteners used for panels. Otherwise, attach trim according to manufacturer's written instructions. B. Control Joints: Install control joints according to ASTM C 840 and in specific locations approved by Architect for visual effect. 1. Install double studs to create control joints, leave 1/2 inch separation between gypsum board panels for installation of control joint units. 2. For Rated Fire and Smoke Barriers and Non-Rated Smoke Partitions: Construct joints to comply with detail for wall rating. 3. Routing gypsum board to create joint is not acceptable. C. Reveal Trim: Install reveal trim at locations indicated on drawings. 1. Install double studs to support reveal trim and gypsum board. 2. For Rated Fire and Smoke Barriers and Non-Rated Smoke Partitions: Construct reveal to comply with detail for wall rating. 3. Routing gypsum board to create reveal is not acceptable. D. Interior Trim: Install in the following locations: 1. Cornerbead: Use at outside corners unless otherwise indicated. 2. LC-Bead: Use at exposed panel edges. 3. Curved-Edge Cornerbead: Use at curved openings. 3.7 FINISHING GYPSUM BOARD A. General: Treat gypsum board joints, interior angles, edge trim, control joints, penetrations, fastener heads, surface defects, and elsewhere as required to prepare gypsum board surfaces for decoration. Promptly remove residual joint compound from adjacent surfaces. B. Prefill open joints, rounded or beveled edges and damaged surface areas. C. Apply joint tape over gypsum board joints, except for trim products specifically indicated as not intended to receive tape.

24 GYPSUM BOARD Section Page 10 of 12 D. Gypsum Board Finish Levels: Finish panels to levels indicated below and according to ASTM C 840: 1. Finish paper-faced gypsum board surfaces in accordance with levels noted below and as developed by Gypsum Association finish levels. a. Level 1: Walls above finish ceiling in corridors, rooms, spaces, unless otherwise noted. b. Level 2: Walls used as a substrate for solid surface material and ceramic, quarry and other tile finishes. c. Level 3: Walls, soffits and ceilings to receive Type II wall covering. d. Level 4: Walls, soffits and ceilings to receive Type I wall covering and paint. 1) Primer and its application to surfaces are specified in Division 09 Section "Interior Painting". e. Level 5: Walls, soffits and ceilings to receive paint. 1) Primer and its application to surfaces are specified in Division 09 Section "Interior Painting". 2. Finish Level Descriptions: Level DESCRIPTION 1 All joints and interior angles shall have tape embedded in joint compound. Surface shall be free of excess joint compound. Tool marks and ridges are acceptable. Where fire rating is required, comply with local governing code requirements. 2 All joints and interior angles shall have tape embedded in joint compound and one separate coat of joint compound applied over all joints, and accessories. Surface shall be free of excess joint compound. Tool marks and ridges are acceptable. 3 All joints and interior angles shall have tape embedded in joint compound and two separate coats of joint compound applied over all joints, angles, fastener heads, and accessories. All joint compound shall be smooth and free of tool marks and ridges. It is recommended that the prepared surface be coated with a primer/sealer prior to the application of final finishes. 4 Joints and interior angles shall have tape embedded in joint compound and three separate coats of joint compound applied over all joints, angles, fastener heads, and accessories. All joint compound shall be smooth and free of tool marks and ridges. Surfaces shall be coated with a primer/sealer prior to the application of final finishes. 5 All joints and interior angles shall have tape embedded in joint compound and three separate coats of joint compound applied over all joints, angles, fastener heads, and accessories. Contractor Option: High-build drywall surfacer, shall be applied to the entire surface after joints have been properly treated. The surface shall be smooth and free of tool marks and ridges. 3. After finishing is completed and before paint or wall covering is applied, inspect walls and make corrections to provide smooth surfaces free from defects. a. Walls shall be plumb and true. b. All corners shall be plumb and square.