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	SECTION 09250
	GYPSUM BOARD
	Copyright 2014 ARCAT, Inc. - All rights reserved
	** NOTE TO SPECIFIER ** Temple-Inland Forest Products Corp. - Gypsum Products; gypsum wallboard, gypsum board. . This section is based on the products of Temple-Inland Forest Products Corp. - Gypsum Products, which is located at: 303 S. Temple Dr. P. O. Box N Diboll, TX 75941 Toll Free Tel: 800-231-6060 Tel: 972-467-3499 Fax: 972-231-6193 Email: request info Web: www.templeinland.com/BuildingProducts/Gypsum [ Click Here ] for additional information. Temple-Inland's forest products business segment operates 19 plants and mills throughout the U.S. and in Canada. These facilities manufacture a wide range of construction and industrial building products, including lumber and studs, wood trim and siding, particleboard, medium density fiberboard (MDF), gypsum board, and fiberboard products. The forest products segment maintains an interest in a gypsum joint venture and an MDF joint venture.
	PART 1	GENERAL
	1.1	SECTION INCLUDES
	** NOTE TO SPECIFIER ** Delete items below not required for project.
		A.	Gypsum board and accessories.
		B.	Interior metal framing systems and accessories.
	1.2	RELATED SECTIONS
	** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
		A.	Section 05400 - Cold Formed Metal Framing.
		B.	Section 06100 - Rough Carpentry; SPIB grade-stamped wood studs for framing.
		C.	Section 07210 - Building Insulation.
		D.	Section 07240 - Exterior Insulation Finish System.
		E.	Section 07840 - Fire-Stopping.
		F.	Section 07910 - Joint Sealants.
		G.	Section 08310 - Access Doors and Panels.
		H.	Section 09215 - Gypsum Veneer Plaster.
		I.	Section 09253 - Gypsum Sheathing.
		J.	Section 09265 - Gypsum Board Shaft Wall Assemblies.
		K.	Section 09900 - Painting.
	1.3	REFERENCES
	** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
		A.	American Society for Testing and Materials (ASTM):
			1.	ASTM C 473 - Standard Test Methods for Physical Testing of Gypsum Panel Products.
			2.	ASTM C 475 - Standard Specification for Joint Compound and Joint Tape for Finishing Gypsum Board.
			3.	ASTM C 514 - Standard Specification for Nails for the Application of Gypsum Board.
			4.	ASTM C 645 - Standard Specification for Nonstructural Steel Framing Members.
			5.	ASTM C 665 - Standard Specification for Mineral-Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured Housing.
			6.	ASTM C 754 - Standard Specification for Installation of Steel Framing Members to Receive Screw-Attached Gypsum Panel Products.
			7.	ASTM C 840 - Standard Specification for Application and Finishing of Gypsum Board.
			8.	ASTM C 919 - Standard Practice for Use of Sealants in Acoustical Applications.
			9.	ASTM C 954 - Standard Specification for Steel Drill Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Steel Studs.
			10.	ASTM C 1002 - Standard Specification for Steel Self-Piercing Tapping Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Wood Studs or Steel Studs.
			11.	ASTM C 1047 - Standard Specification for Accessories for Gypsum Wallboard and Gypsum Veneer Base.
			12.	ASTM C 1177 - Standard Specification for Glass Mat Gypsum Substrate for Use as Sheathing.
			13.	ASTM C 1280 - Standard Specification for Application of Gypsum Sheathing.
			14.	ASTM C 1396 - Standard Specification for Gypsum Board.
			15.	ASTM C 1629 - Standard Classification for Abuse-Resistant Nondecorated Interior Gypsum Panel Products and Fiber-Reinforced Cement Panels.
			16.	ASTM C 1658 - Standard Specification for Glass Mat Gypsum Panels.
			17.	ASTM D 1037 - Test Methods for Evaluating Properties of Wood-Based Fiber and Particle Panel Materials.
			18.	ASTM D 3273 - Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber.
			19.	ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.
			20.	ASTM E 90 - Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements.
			21.	ASTM E 119 - Standard Test Methods for Fire Tests of Building Construction and Materials.
			22.	ASTM E 331 - Test Method for Water Penetration of Exterior Windows, Curtain Walls and Doors by Uniform Static Air Pressure Difference.
			23.	ASTM E 413 - Classification for Rating Sound Insulation.
		B.	Gypsum Association (GA):
			1.	GA-214 - Recommended Levels of Gypsum Board Finish.
			2.	GA-216 - Application and Finishing of Gypsum Panel Products.
			3.	GA-253 - Application of Gypsum Sheathing.
			4.	GA-290 - Area Separation Walls.
			5.	GA-600 - Fire Resistance Design Manual.
		C.	ITS (Dir) - Directory of Listed Products; Intertek Testing Services.
		D.	ULC (FRD) - Fire Resistance Directory; Underwriters' Laboratories of Canada.
		E.	UL (FRD) - Fire Resistance Directory; Underwriters Laboratories Inc.
		F.	UL 263 - Standard for Fire Tests of Building Construction and Materials.
	1.4	DESIGN REQUIREMENTS
		A.	Metal Framing: Provide non-load bearing steel stud partitions with deflections conforming to L/360 at 15 psf (718 Pa) for veneer plaster walls and L/240 at 5 psf (239 Pa) typical for gypsum board walls.
		B.	Fire-Resistive Rating: Where indicated on Drawings, provide materials and construction that are identical to those assemblies whose fire resistance rating has been determined per ASTM E 119 by a testing and inspecting organization acceptable to authorities having jurisdiction.
			1.	Meet or exceed fire resistance requirements outlined under provisions of the GA-600 Fire Resistance Design Manual for wall and ceiling assemblies.
			2.	Meet or exceed Class A flame/fuel/smoke requirements of ASTM E 84 surface burning characteristics for finish materials.
		C.	Sound Transmission Characteristics: For gypsum board assemblies with STC ratings, provide materials and construction identical to those tested in assembly indicated according to ASTM E 90 and classified according to ASTM E 413 by a qualified independent testing agency.
		D.	Impact-Resistant Characteristics: No structural failure at 400 foot pounds per ASTM E 195.
		E.	Mold-Resistant Characteristics: Rating of 10 according to ASTM D 3273 mold testing.
	** NOTE TO SPECIFIER ** Temple-Inland board products manufactured with a synthetic gypsum core are now certified to contain at least 95 percent recycled materials. In addition, over 60 percent of our current board production capacity is produced with this environmentally conscious raw material. Delete if not required.
		F.	Recycled Content Certification: Provide gypsum board with at least 95 percent recycled content.
	1.5	SUBMITTALS
		A.	Submit under provisions of Section 01300.
		B.	Product Data: Manufacturer's data sheets on each product to be used, including:
			1.	Gypsum board, joint tape and finish.
			2.	Preparation instructions and recommendations.
			3.	Storage and handling requirements and recommendations.
			4.	Installation methods.
		C.	Shop Drawings: Indicate details associated with fireproofing and acoustical seals, opening locations and details, and opening termination details.
	** NOTE TO SPECIFIER ** Delete selection samples if colors have already been selected.
		D.	Selection Samples: For each finish product specified, two complete sets of color chips representing manufacturer's full range of available colors and patterns.
		E.	Verification Samples: For each finish product specified, two samples, minimum size 6 inches (150 mm) square, representing actual product, color, and patterns.
	1.6	QUALITY ASSURANCE
		A.	Fire-Resistance Labeling: Provide products labeled with third party certification stamp of fire-resistance characteristics, including ITC, UL, and ULC as applicable.
		B.	Installer Qualifications: Perform work by company specializing in Work of this Section with minimum 3 years documented experience.
	** NOTE TO SPECIFIER ** Include a mock-up if the project size and/or quality warrant taking such a precaution. The following is one example of how a mock-up on a large project might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project.
		C.	Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.
			1.	Finish areas designated by Architect.
			2.	Do not proceed with remaining work until workmanship, color, and sheen are approved by Architect.
			3.	Refinish mock-up area as required to produce acceptable work.
	1.7	DELIVERY, STORAGE, AND HANDLING
		A.	Store products inside under cover and keep them dry and protected against damage from weather, direct sunlight, surface contamination, corrosion, construction traffic, and other damaging causes.
			1.	Neatly stack gypsum boards flat to prevent sagging.
			2.	Handle gypsum boards to prevent damage to edges, ends, and surfaces.
			3.	Protect adhesives and joint compounds from freezing or overheating per manufacturers instructions.
			4.	Protect metal framing studs.
		B.	Store and dispose of solvent-based materials and supplies used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction.
	1.8	PROJECT CONDITIONS
		A.	Establish and maintain environmental conditions for application and finishing gypsum board to comply with ASTM C 840 and GA-216.
		B.	Minimum Room Temperatures:
			1.	For non-adhesive attachment of gypsum board to framing, maintain not less than 40 degrees F (4.5 degrees C).
			2.	For adhesive attachment of gypsum board maintain not less than 50 degrees F (10 degrees C) for 48 hours prior to application and continuously thereafter until drying is complete.
		C.	Ventilate building spaces to remove moisture not required for drying joint treatment materials. Avoid drafts during dry, hot weather to prevent materials from drying too rapidly.
	PART 2	PRODUCTS
	2.1	MANUFACTURERS
		A.	Acceptable Manufacturer: Temple-Inland Forest Products Corp. - Gypsum Products, which is located at: 303 S. Temple Dr. P. O. Box N ; Diboll, TX 75941; Toll Free Tel: 800-231-6060; Tel: 972-467-3499; Fax: 972-231-6193; Email: request info; Web: www.templeinland.com/BuildingProducts/Gypsum
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
		B.	Substitutions: Not permitted.
		C.	Requests for substitutions will be considered in accordance with provisions of Section 01600.
	2.2	MATERIALS
		A.	Gypsum Board Materials: As manufactured by Temple-Inland Forest Products Corp. and complying with ASTM C 1396. Board size as suitable for use to minimize joints.
			1.	Regular Gypsum Board: Regular type.
	** NOTE TO SPECIFIER ** Delete thicknesses not required.
				a.	Thickness: 1/4 inch (6 mm).
				b.	Thickness: 3/8 inch (9.5 mm).
				c.	Thickness: 1/2 inch (13 mm).
	** NOTE TO SPECIFIER ** For mold/water-resistance, refer to Par. 2.2A 13 below.
			2.	Fire-Rated Regular Gypsum Board: Type X fire-rated regular gypsum board.
				a.	Thickness: 5/8 inch (16 mm).
	** NOTE TO SPECIFIER ** Type C has greater fire performance than Type X and may be required by some assemblies. For mold/water-resistance, refer to Par. 2.2A 14 below.
			3.	Fire-Rated Regular Gypsum Board: Type C fire-rated regular gypsum board.
				a.	Thickness: 5/8 inch (16 mm).
			4.	Mold-Resistant Fiberglass-Faced Gypsum Sheathing: GreenGlass gypsum sheathing.
				a.	Thickness: 1/2 inch (13 mm).
			5.	Fire-Rated Mold-Resistant Fiberglass-Faced Gypsum Sheathing: GreenGlass Type X gypsum sheathing.
				a.	Thickness: 5/8 inch (16 mm).
			6.	Mold-Resistant Fiberglass-Faced Interior Gypsum Board: GreenGlass Interior Gypsum Board.
				a.	Thickness: 1/2 inch (13 mm).
			7.	Fire-Rated Mold-Resistant Fiberglass-Faced Interior Gypsum Board: GreenGlass Type X Interior Gypsum Board
				a.	Thickness: 5/8 inch (16 mm).
			8.	Water-Resistant Gypsum Backing Board: Water-resistant gypsum backing board.
				a.	Thickness: 1/2 inch (13 mm).
			9.	Fire-Rated Water-Resistant Gypsum Backing Board: Type X fire-rated water-resistant gypsum backing board.
				a.	Thickness: 5/8 inch (16 mm).
	** NOTE TO SPECIFIER ** Type TG-C has greater fire performance than Type X and may be required by some assemblies.
			10.	Fire-Rated Water-Resistant Gypsum Backing Board: Type TG-C fire-rated water-resistant gypsum backing board.
				a.	Thickness: 5/8 inch (16 mm).
			11.	Mold/Water-Resistant Fiberglass-Faced Gypsum Backing Board: GreenGlass Tilebacker Gypsum Board.
				a.	Thickness: 1/2 inch (13 mm).
			12.	Fire/Mold/Water-Resistant Fiberglass-Faced Gypsum Backing Board: GreenGlass Type X Tilebacker Gypsum Board.
				a.	Thickness: 5/8 inch (16 mm).
			13.	Gypsum Ceiling Board: Regular Span24 Gypsum Board.
				a.	Thickness: 1/2 inch (13 mm).
			14.	Foil-Back Regular Gypsum Board: Regular foil-back gypsum board.
	** NOTE TO SPECIFIER ** Delete thickness not required.
				a.	Thickness: 1/2 inch (13 mm).
			15.	Foil-Back Fire-Rated Gypsum Board: Type TG-C foil-back gypsum board.
	** NOTE TO SPECIFIER ** Delete thickness not required.
				a.	Thickness: 1/2 inch (13 mm).
				b.	Thickness: 5/8 inch (16 mm).
			16.	Foil-Back Fire-Rated Gypsum Board: Type X foil-back gypsum board.
	** NOTE TO SPECIFIER ** Delete thickness not required.
				a.	Thickness: 1/2 inch (13 mm).
				b.	Thickness: 5/8 inch (16 mm).
	** NOTE TO SPECIFIER ** Delete sheathing types not required. Sheathing is available in 8 foot (2438 mm), 9 foot (2743 mm), 10 foot (3048 mm) and 12 foot (3658 mm) lengths.
			17.	Regular Gypsum Exterior Sheathing Board: Regular gypsum sheathing board.
				a.	Thickness: 1/2 inch (13 mm).
	** NOTE TO SPECIFIER ** Delete one of the following two configurations.
				b.	Configuration: Twenty-four inches (610 mm) wide by length required with tongue and groove edges.
				c.	Configuration: Forty-eight inches (1219 mm) wide by length required with square edges.
			18.	Fire-Rated Gypsum Exterior Sheathing Board: Type TG-C fire-rated gypsum sheathing board.
				a.	Thickness: 5/8 inch (16 mm).
	** NOTE TO SPECIFIER ** Delete one of the following two configurations.
				b.	Configuration: Twenty-four inches (610 mm) wide by length required with tongue and groove edges for horizontal application.
				c.	Configuration: Forty-eight inches (1219 mm) wide by length required with square edges for horizontal application.
			19.	Mold/Water-Resistant Regular Gypsum Board: Comfort Guard regular type.
				a.	Thickness: 1/2 inch (13 mm).
			20.	Mold/Water-Resistant Fire-Rated Gypsum Board: Fire-Rated Comfort Guard, Type TG-C fire-rated gypsum board.
				a.	Thickness: 5/8 inch (16 mm).
			21.	Mold-Resistant Regular Gypsum Exterior Sheathing Board: StructGuard Sheathing Board.
				a.	Thickness: 1/2 inch (13 mm).
				b.	Properties: Water absorption less than 6 percent per ASTM C 473. Enhanced mold resistance per ASTM D3273. Water repellent paper.
				c.	Configuration: Forty-eight inches (1219 mm) wide by length required with square edges for horizontal application.
				d.	Joint Tape: ASTM E 331, Foil-faced Polyken 626-35 or Window Wrap as acceptable to the sheathing board manufacturer.
			22.	Mold-Resistant Fire-Rated Gypsum Exterior Sheathing Board: Fire-Rated StructGuard Sheathing, Type X fire-rated gypsum sheathing board.
				a.	Thickness: 5/8 inch (16 mm).
				b.	Properties: Water absorption less than 6 percent per ASTM C 473. Enhanced mold resistance per ASTM D 3273. Water repellent paper.
				c.	Configuration: Forty-eight inches (1219 mm) wide by length required with square edges for horizontal application.
				d.	Joint Tape: ASTM E 331, Foil-faced Polyken 626-35 or Window Wrap as acceptable to the sheathing board manufacturer.
			23.	Exterior Gypsum Soffit Board: Exterior gypsum soffit board.
				a.	Thickness: 1/2 inch (13 mm).
			24.	Fire-Rated Exterior Gypsum Soffit Board: Type X fire-rated exterior gypsum soffit board.
				a.	Thickness: 5/8 inch (16 mm).
	** NOTE TO SPECIFIER ** Type TG-C has greater fire performance than Type X and may be required by some assemblies.
			25.	Fire-Rated Exterior Gypsum Soffit Board: Type TG-C fire-rated exterior gypsum soffit board.
				a.	Thickness: 5/8 inch (16 mm).
			26.	Gypsum Board at Curved Surfaces: High-flexibility gypsum board.
				a.	Thickness: 1/4 inch (6 mm).
			27.	Gypsum Base for Veneer Plaster: Regular Veneer Plaster Base (VPB).
				a.	Thickness: 1/2 inch (13 mm).
			28.	Fire-Rated Gypsum Base for Veneer Plaster: Fire-Rated Veneer Plaster Base (VPB).
				a.	Thickness: 5/8 inch (16 mm).
			29.	Fire-Rated Gypsum Coreboard: SilentGuard Shaftliner.
				a.	Thickness: 1 inch (25 mm).
			30.	Fire-Rated Fiberglass-Faced Coreboard: GreenGlass Liner Panel.
				a.	Thickness: 1 inch (25 mm).
			31.	Fire-Rated Abuse-Resistant Gypsum Board: ComfortGuard AR.
				a.	Thickness: 5/8 inch (16 mm).
			32.	Fire-Rated Impact-Resistant Board: ComfortGuard IR.
				a.	Thickness: 5/8 inch (16 mm).
				b.	Properties: 3-ply laminate adhered to back for impact penetration.
			33.	Fire-Rated/Mold-Resistant Sound Deadening Board: ComfortGuard Sound Deadening Gypsum Board.
				a.	Thickness: 5/8 inch (16 mm).
				b.	Properties: 2 layers of 5/16 inch gypsum board laminated with a viscoelastoic polymer.
	2.3	ACCESSORIES
	** NOTE TO SPECIFIER ** Delete accessories not required.
		A.	Sound-Resistant Board: Sound resistant fiberboard 1/2 inch (13 mm) thick, Sound Choice by Temple-Inland Forest Products Corp.
		B.	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. Fire-rated as required by assembly.
		C.	Acoustical Sealant: Non-hardening, non-drying, non-skinning, non-staining, non-bleeding, gunnable type as recommended by manufacturer for use in conjunction with gypsum board.
		D.	Metal Corner Beads: ASTM C 1047; formed galvanized steel angle, minimum base steel 0.014 inch thick, sizes as required to suit substrate.
		E.	Metal Casing Beads: ASTM C 1047; formed galvanized steel trim, minimum base steel 0.014 inch thick, sizes as required to suit substrate.
		F.	Metal Control Joints: ASTM C 1047; roll-formed zinc control joints with perforations in flanges; center channel with removable tape strip over channel.
		G.	Fastening Devices for Metal Framing: ASTM C 1002.
		H.	Fastening Devices for Wood Framing: ASTM C 514.
		I.	Steel Drill Screws: ASTM C 954.
		J.	Joint Compound and Tape: ASTM C 475.
		K.	Vapor Retarder: 6 mil polyethylene.
	** NOTE TO SPECIFIER ** Delete if not required.
	2.4	SPRAY TEXTURE FINISH
		A.	Spray Texture Finish: Non-aggregated, non-asbestos powder producing light to medium-light textures on drywall or other interior surfaces.
	** NOTE TO SPECIFIER ** Delete if not required.
	2.5	METAL FRAMING
		A.	Metal Framing Materials:
	** NOTE TO SPECIFIER ** Delete framing materials not required.
			1.	Studs and Tracks: ASTM C 645; galvanized sheet steel studs. Gage and widths as indicated on Drawings.
			2.	Deep-Leg Deflection Track: ASTM C 645 top runner with 2-inch (51 mm) deep flanges.
			3.	Main Runner Channels: 1-1/2 inch (38 mm) deep, galvanized. Gage and width as indicated.
			4.	Cross Furring Channels: 3/4 inch (19 mm), galvanized. Gage and width as indicated complying with ASTM C 645.
			5.	Rigid Furring Channels: 7/8 inch (22 mm) hat shaped channels, galvanized. Gage and width as indicated complying with ASTM C 645.
			6.	Furring Channels: 1-1/2 inch (38 mm) Z shaped channels complying with ASTM C 645. Gage and width as indicated.
			7.	Resilient Furring Channels: Gage and thickness as indicated, galvanized, complying with ASTM C 645.
			8.	Grid Suspension System for Interior Ceilings: ASTM C 645, direct-hung system composed of main beams and cross-furring members that interlock.
	PART 3	EXECUTION
	3.1	EXAMINATION
		A.	Examine areas and conditions under which Work of this Section will be performed. Correct conditions detrimental to timely and proper completion of Work. Do not proceed until unsatisfactory conditions are corrected.
		B.	Examine substrates to which gypsum board construction attaches or abuts. Verify pre-set hollow metal frames, cast-in anchors, and structural framing for compliance with requirements for installation tolerances and other conditions affecting performance of gypsum board construction.
	3.2	PREPARATION
		A.	Ceiling Anchorage: Coordinate installation of ceiling suspension with installation of overhead structural systems to ensure that inserts and other structural anchorage provisions have been installed to receive ceiling anchors in a manner that will develop their full strength and at spacing required to support ceiling.
			1.	Provide concrete inserts and steel deck devices to other trades for installation well in advance of time needed for coordination with other construction.
	3.3	INSTALLATION
		A.	Metal Framing - General:
			1.	Install steel framing to comply with ASTM C 754 and with ASTM C 840 requirements that apply to framing installation.
			2.	Install supplementary framing, blocking, bracing at termination in Work, and support of fixtures, equipment services, heavy trim, grab bars, toilet accessories, furnishings, and similar construction to comply with details indicated on Drawings and with recommendations of gypsum board manufacturer.
			3.	Isolate steel framing from building structure to prevent transfer of loading imposed by structural movement, at locations indicated below to comply with details indicated on Drawings:
				a.	Where edges of suspended ceilings abut building structure horizontally at ceiling perimeters or penetrations of structural elements.
				b.	Where partitions and wall framing abuts overhead structure.
				c.	Provide slip type joint as detailed to attain lateral support and avoid axial loading.
			4.	Do not bridge building expansion and control joints with steel framing or furring members. Independently frame both sides of joints with framing or furring members.
	** NOTE TO SPECIFIER ** Delete if not required.
		B.	Metal Framing - Walls and Partitions:
			1.	Install runners (track) at floors, ceilings, and structural walls and columns where gypsum board stud system abuts other construction.
				a.	Where studs are installed directly against exterior walls, install asphalt felt strips between studs and wall.
			2.	Metal Stud Spacing: Maximum 16 inches (406 mm) on center, unless noted otherwise. For applications that exceed laterally unsupported height limitations, provide engineered studs per Section 05400 - Cold Formed Metal Framing. Use gage and depth of stud required to meet maximum deflection requirements.
			3.	Installation Tolerances: Install each steel framing and furring member so that fastening surfaces do not vary more than 1/8 inch (3 mm) from plane of faces of adjacent framing.
			4.	Extend partition framing full height to structural supports or substrates above suspended ceilings, except where partitions are indicated to terminate at suspended ceilings. Continue framing over frames for doors and openings and frame around ducts penetrating partitions above ceiling to provide support for gypsum board.
			5.	Install steel studs in sizes and spacing indicated on Drawings, but not less than that required by referenced steel framing installation standards.
			6.	Install steel studs so that flanges point in the same direction and gypsum boards can be installed in the direction opposite to that of the flanges.
			7.	Frame door openings to comply with details indicated on Drawings, with GA-216, and with applicable published recommendations of gypsum board manufacturer. Attach vertical studs at jambs with screws either directly to frames or to jamb anchor clips on door frames. Install runner track section (for cripple studs) at head and secure to jamb studs.
			8.	Extend vertical jamb studs through suspended ceilings and attach to underside of floor or roof structure above.
			9.	Frame openings other than door openings to comply with details indicated on Drawings, or if none is indicated, in same manner as required for door openings; and install framing below sills of openings to match framing required above door heads.
			10.	Blocking: Bolt or screw steel channels to metal studs. Install concealed wood blocking for support of plumbing fixtures, toilet partitions, wall cabinets, toilet accessories, hardware, and other related items that require backing for support under provisions of Section 06100.
	** NOTE TO SPECIFIER ** Install vapor retarder on the warm side of the wall to prevent condensation and resultant problems associated with liquid moisture in the wall assemblies.
			11.	Install vapor retarder on interior of framing members of exterior walls and soffits or interior face of masonry wall construction as shown on Drawings, and to comply with the following requirements:
				a.	Extend vapor retarder to extremities of exterior insulated walls, and to cover miscellaneous voids in insulated substrates, including those that have been stuffed with loose thermal insulation.
				b.	Seal vertical joints in vapor retarders over framing by lapping vapor retarders not less than 2 wall studs. Fasten vapor retarders to framing at top, end, and bottom edges, at perimeter of wall openings, and at lap joints.
				c.	Seal joints in vapor retarders caused by pipes, conduits, electrical boxes, and similar items penetrating vapor retarders with cloth or aluminized tape which bonds permanently to vapor retarder.
				d.	Repair tears and punctures in vapor retarder immediately before concealment by application of gypsum board or other construction.
				e.	Use fire-resistive type vapor retarder in locations where vapor retarder is not covered with gypsum board. Attach as per manufacturer's written instructions.
				f.	Use non-resistive type vapor retarder where vapor retarder is covered with gypsum board.
	** NOTE TO SPECIFIER ** Delete if not required.
		C.	Metal Framing - Suspended and Furred Ceilings:
			1.	Secure hangers to structural support by connecting directly to structure where possible, otherwise connect to cast-in concrete inserts or other anchorage devices or fasteners as indicated on Drawings.
				a.	Do not attach hangers to metal deck tabs.
				b.	Do not attach hangers to metal roof deck
				c.	Do not attach hangers to underside of concrete slabs with power-actuated fasteners.
			2.	Install metal ceiling framing per ASTM C 754, and space main runners at 4 feet (1219 mm) on center maximum.
			3.	Do not connect or suspend steel framing from ducts, pipes, or conduit.
			4.	Keep hangers and braces 2 inches (51 mm) clear of ducts, pipes, or conduits.
			5.	Sway-brace suspended steel framing with hangers used for support.
			6.	Comply with local governing code requirements where applicable.
		D.	Gypsum Board - General:
			1.	Gypsum Board Application and Finishing Standards: Install and finish gypsum board to comply with ASTM C 840 and GA-216.
			2.	Install sound attenuation insulation, specified in Section 07210, where indicated on Drawings, prior to gypsum board installation unless readily installed after board has been installed.
			3.	Locate exposed end-butt joints as far from center of walls and ceilings as possible, and stagger not less than 24 inches (610 mm) in alternate courses of board.
			4.	Install ceiling boards across framing in the manner which minimizes the number of end-butt joints, and which will avoid end joints in the central area of each ceiling. Stagger end joints a minimum of 24 inches (610 mm).
			5.	Install wall and partition boards vertically unless otherwise noted.
			6.	Install exposed gypsum board with face side out. Do not install imperfect, damaged, or damp boards. Butt boards together for a light contact at edges and ends with not more than 1/16 inch (1.5 mm) open space between boards. Do not force into place.
			7.	Locate either edge or end joints over supports, except in horizontal applications or where intermediate supports or gypsum board back-blocking is provided behind end joints. Position boards so that like edges abut, tapered edges against tapered edges, and mill-cut or field-cut ends against mill-cut or field-cut ends. Do not place tapered edges against cut edges or ends. Stagger vertical joints over different studs on opposite sides of partitions.
			8.	Attach gypsum board to steel studs so that leading edge or end of each board is attached to open (unsupported) edge of stud flange first.
			9.	Attach gypsum board to supplementary framing and blocking provided for additional support at openings and cut-outs.
			10.	Form control joints and expansion joints at locations indicated on Drawings, and as recommended by Gypsum Association, with space between edges of boards prepared to receive trim accessories.
				a.	Maximum distance between control joints: 30 linear feet (9144 mm).
			11.	Cover both faces of steel stud partition framing with gypsum board in concealed spaces (above ceilings, etc.), except in chase walls that are properly braced internally.
				a.	Fit gypsum board around ducts, pipes, and conduits.
				b.	Where partitions intersect open concrete coffers, cut gypsum board to fit profile of coffers and allow 1/4 to 1/2 inch (6 mm to 13 mm) wide joint for sealant.
			12.	Isolate perimeter of non-load bearing drywall partitions at structural abutments. Provide 1/4 to 1/2 inch (6 mm to 13 mm) space and trim edge with "U" bead edge trim. Seal joints with acoustical sealant. See also 07910.
			13.	Where sound-rated drywall construction is indicated on Drawings, seal construction at perimeters, control and expansion joints, openings, and penetrations with a continuous bead of acoustical sealant including a bead at both faces of partitions. Comply with ASTM C 919 and manufacturer's recommendations for location of edge trim, and close off sound-flanking paths around or through construction, including sealing of partitions above acoustical ceilings.
				a.	For double-layer partition systems, construction above acoustical plaster ceilings may be installed with base layer only.
			14.	Space fasteners in gypsum boards per referenced gypsum board application and finishing standard and manufacturer's recommendations.
			15.	Curved Gypsum Partitions and Surfaces: Install gypsum board panels horizontally with wrapped edges perpendicular to metal framing per manufacturer's recommendations.
	** NOTE TO SPECIFIER ** Delete if not required.
		E.	Spray-Texture Finish: Apply spray texture finish on walls and ceiling surfaces per manufacturer's instructions.
	** NOTE TO SPECIFIER ** Delete if not required.
		F.	Gypsum Sheathing: Comply with ASTM C 1280 and GA-253.
		G.	Accessories:
			1.	General: Where feasible, use the same fasteners to anchor trim accessory flanges as required to fasten gypsum board to the supports. Otherwise, fasten flanges to comply with manufacturer's recommendations.
			2.	Install metal corner beads at external corners.
			3.	Install metal edge trim whenever edge of gypsum board would otherwise be exposed or semi-exposed, except where plastic trim is indicated on Drawings. Provide type with face flange to receive joint compound except where "U" bead (semi-finishing type) is indicated.
			4.	Install gypsum board reveals where indicated on Drawings.
			5.	Install control joints at locations indicated on Drawings, or if not indicated, at spacing and locations required by referenced gypsum board application and finish standard, and approved by Architect for visual effect.
	3.4	JOINT TREATMENT
		A.	General:
			1.	Inspect areas to be joint treated, verifying that the gypsum board fits snugly against supporting framework.
			2.	In areas where joint treatment and compound finishing will be performed, maintain a temperature of not less than 55 degrees F (13 degrees C) for 24 hours prior to commencing the treatment, and until joint and finishing compounds have dried.
			3.	Apply the joint treatment and finishing compound by machine or hand tool.
			4.	Provide a minimum drying time of 24 hours between coats, with additional drying time in poorly ventilated areas.
		B.	Embedding Compounds:
			1.	Apply to gypsum board joints and fastener heads in a thin uniform layer.
			2.	Spread the compound not less than 3 inches (76 mm) wide at joints, center the reinforcing tape in the joint, and embed the tape in the compound. Then, spread a thin layer of compound over the tape.
			3.	After this treatment has dried, apply a second coat of embedding compound to joints and fastener heads, spreading in a thin uniform coat to not less than 6 inches (152 mm) wide at joints. Feather edges.
			4.	Sand between coats.
			5.	When thoroughly dry, sandpaper to eliminate ridges and high points.
		C.	Finishing Compounds:
			1.	After embedding compound is thoroughly dry and has been completely sanded, apply a coat of finishing compound to joints and fastener heads.
			2.	Feather the finishing compound to not less than 12 inches (305 mm) wide.
			3.	When thoroughly dry, sandpaper to obtain a uniform smooth surface, taking care to not scuff the paper surface of the board.
	3.5	LEVEL OF FINISH
		A.	Level of finish shall be as per Gypsum Association publication, GA-214-M as noted herein.
			1.	Finish types are noted on Drawings or Finish Schedule.
			2.	Sand between each coat of compound as required to remove ridges and other imperfections.
		B.	Level of finish Type 0:
			1.	No taping, finishing or accessories required.
		C.	Level of finish Type 1:
			1.	Tape set in joint compound at joints and interior angles.
			2.	Tool marks and ridges are acceptable.
		D.	Level of finish Type 2:
			1.	Tape embedded in joint compound at joints and interior angles, wiped with joint knife leaving thin coat of compound over tape.
			2.	Accessories covered with one coat of joint compound.
			3.	Fasteners covered with one coat of joint compound.
			4.	Surface shall be free of excess joint compound.
			5.	Tool marks and ridges are acceptable.
		E.	Level of finish Type 3:
			1.	Tape embedded in joint compound at joints and interior angles, wiped with joint knife leaving thin coat of compound over tape.
			2.	Cover tape with one separate coat of joint compound.
			3.	Accessories covered with two separate coats of joint compound.
			4.	Fasteners covered with two separate coats of joint compound.
			5.	Joint compound shall be smooth and free of tool marks and ridges. Sand to achieve a smooth paint-ready surface.
		F.	Level of finish Type 4:
			1.	Tape embedded in joint compound at joints and interior angles, wiped with joint knife leaving thin coat of compound over tape.
			2.	Cover tape with two separate coats of joint compound.
			3.	Accessories covered with three separate coats of joint compound.
			4.	Fasteners covered with three separate coats of joint compound.
			5.	Joint compound shall be smooth and free of tool marks and ridges. Sand to achieve a smooth paint-ready surface.
		G.	Level of finish Type 5:
			1.	Tape embedded in joint compound at joints and interior angles, wiped with joint knife leaving thin coat of compound over tape.
			2.	Cover tape with two separate coats of joint compound.
			3.	Accessories covered with three separate coats of joint compound.
			4.	Fasteners covered with three separate coats of joint compound.
			5.	A skim coat of joint compound shall be applied to entire surface.
			6.	The surface shall be smooth and free of ridges and defects. Sand the surface to a smooth, paint-ready condition.
	3.6	TOLERANCES
		A.	Maximum Variation of Finished Gypsum Board Surface from True Flatness: 1/8 inch (1.5 mm) in 10 feet (3048 mm) in any direction.
	3.7	PROTECTION
		A.	Provide final protection and maintain conditions that ensure gypsum board construction being without damage or deterioration at time of Substantial Completion.
	3.8	CLEANING
		A.	In addition to other requirements for cleaning, use necessary care to prevent scattering gypsum board scraps and dust, and to prevent tracking gypsum and joint finishing compound onto floor surfaces.
		B.	At completion of each segment of installation in a room or space, promptly pick up and remove scraps, debris, and surplus materials of this Section from working area.
	END OF SECTION