ASTM C840-2011 Standard Specification for Application and Finishing of Gypsum Board《石膏板的应用和加工的标准规格》.pdf

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1、Designation:C84008 Designation: C840 11Standard Specification forApplication and Finishing of Gypsum Board1This standard is issued under the fixed designation C840; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last r

2、evision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification covers the minimum requ

3、irements for the methods of application and finishing of gypsum board,including related items and accessories.1.2 Details of construction for a specific assembly to achieve the required fire resistance shall be obtained from reports offire-resistance tests, engineering evaluations, or listings from

4、recognized fire testing laboratories.1.2.1 Where this specification is more stringent (size or thickness of framing: size and spacing of fasteners) than the fire-ratedconstruction, this specification shall govern.1.3 Where sound control is required for a gypsum board assembly, details of constructio

5、n shall be in accordance with reportsof acoustical tests of assemblies that have met the required acoustical values.1.4 Unheated spaces above gypsum board ceilings shall be properly ventilated (see Appendix X2).1.5 The various application systems are located in the following sections:I Application o

6、f Single-Ply Gypsum Board to Wood FramingMembers8II Application of Two-Ply Gypsum Board to Wood FramingMembers9III Application of Gypsum Board by Adhesive Nail-On toWood Framing Members10IV Semi-Solid Gypsum Board Partitions 11V Solid Gypsum Board Partitions 12VI Application of Gypsum Board with Adh

7、esives to InteriorMasonry or Concrete Walls13VII Application of Gypsum Board to Rigid Foam Insulation 14VIII Application of Gypsum Board to Steel Framing and Furring 15IX Arches and Bending Radii 16X Application of Gypsum Board to Receive Tile byAdhesive Application17XI Exterior Application of Gypsu

8、m Wallboard andExterior Gypsum Soffit Board18XII Floating Interior Angles 19XIII Control (Expansion) Joints 20XIV Foil-Backed Gypsum Board 21XV Application of Vinyl Faced Gypsum Board 221.6 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are math

9、ematicalconversions to SI units that are provided for information only and are not considered standard.1.6The1.7 The text of this specification references notes and footnotes which provide explanatory material. These notes andfootnotes (excluding those in tables and figures) shall not be considered

10、as requirements of the specification.1.7The1.8 The following precautionary caveat pertains only to Sections 6-246-25. This standard does not purport to addressall of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriatesa

11、fety and health practices and determine the applicability of regulatory limitations prior to use.1.7.1For1.8.1 For specific precautionary statements, see 4.1.1, 4.1.2, and 22.523.5.1This specification is under the jurisdiction of ASTM Committee C11 on Gypsum and Related Building Materials and System

12、s and is the direct responsibility ofSubcommittee C11.03 on Specifications for the Application of Gypsum and Other Products in Assemblies.Current edition approved MayDec. 1, 2008.2011. Published June 2008.January 2012. Originally approved in 1979. Last previous edition approved in 20072008 asC840 07

13、8. DOI: 10.1520/C0840-08.10.1520/C0840-11.1This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, A

14、STM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive,

15、PO Box C700, West Conshohocken, PA 19428-2959, United States.2. Referenced Documents2.1 ASTM Standards:2C11 Terminology Relating to Gypsum and Related Building Materials and SystemsC475/C475M Specification for Joint Compound and Joint Tape for Finishing Gypsum BoardC514 Specification for Nails for t

16、he Application of Gypsum BoardC557 Specification for Adhesives for Fastening Gypsum Wallboard to Wood FramingC645 Specification for Nonstructural Steel Framing MembersC754 Specification for Installation of Steel Framing Members to Receive Screw-Attached Gypsum Panel ProductsC920 Specification for El

17、astomeric Joint SealantsC954 Specification for Steel Drill Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Steel Studsfrom 0.033 in. (0.84 mm) to 0.112 in. (2.84 mm) in ThicknessC1002 Specification for Steel Self-Piercing Tapping Screws for the Application of Gypsum Pan

18、el Products or Metal PlasterBases to Wood Studs or Steel StudsC1007 Specification for Installation of Load Bearing (Transverse and Axial) Steel Studs and Related AccessoriesC1047 Specification for Accessories for Gypsum Wallboard and Gypsum Veneer BaseC1396/C1396M Specification for Gypsum BoardC1546

19、 Guide for Installation of Gypsum Products in Concealed Radiant Ceiling Heating Systems2.2 U.S. Department of Commerce Publication:PS20 American Softwood Lumber Standard32.3 ANSI Standard:4ANSI A108 Specifications for the Installation of Ceramic TileANSI A136.1 Specifications for Organic Adhesives f

20、or Installation of Ceramic Tile, Type I and Type II3. Terminology3.1 DefinitionsDefinitions shall be in accordance with Terminology C11.3.2 Descriptions of Terms Specific to This Standard:3.2.1 all-purpose compound, na compound formulated and manufactured to serve as a taping or finishing compound,

21、or both.3.2.2 critical lighting, na condition where interior surfaces are flooded by natural or artificial lighting at an oblique angle.3.2.3 decoration, npaint (including primers), texture, coatings, and coverings such as wallpaper and sheet plastic materialsdesigned to conceal or protect the surfa

22、ce of the gypsum board (see Appendix X3).3.2.4 dry type, na compound in powder form to be mixed with water before use.3.2.5 drying type, na compound that hardens by the evaporation of the vehicle used to make the paste.3.2.6 drywall primer, na paint material specifically formulated to fill the pores

23、 and minimize the suction difference betweengypsum board surface paper and the compound used on finished joints, angles, fastener heads and accessories, and over skimcoatings.3.2.7 face panel, noutside ply of multiple layer gypsum board assemblies.3.2.8 finished wallboard, nwallboard that has had th

24、e joints taped, has had the joints, fastener heads, and flanges ofaccessories concealed with joint compound, and has been sanded to prepare the surface to receive job applied decoration.3.2.9 finishing, nthe preparation of gypsum board surfaces to receive the field application of decoration.3.2.10 f

25、inishing compound (sometimes called topping compound), na compound used for successive coats over the taping orall-purpose compound that provides a smooth and level surface for the application of decoration.3.2.11 finishing of accessories, nthe application of compound to flanges of accessories to cr

26、eate a monolithic surface.3.2.12 flange, nthat part of an accessory extending over the face of the gypsum wallboard intended to become a part of themonolithic plane of the prepared surface.3.2.13 framing member, nthat portion of the framing, furring, and blocking to which the gypsum board is attache

27、d.3.2.14 harden, va condition reached when the compound has lost its plasticity to an arbitrary degree, measured in resistanceto penetration or deformation.3.2.15 joint photographing, na condition where the finished joint areas visible after final decoration.3.2.16 joint tape, na strip of material d

28、esigned to be embedded in compound to reinforce joints, cracks, or other smallopenings in or between gypsum boards.3.2.17 joint treatment, napplication of joint tape and compound to the joint between gypsum boards.3.2.18 laminating compound, na compound (abrasive) used to adhere gypsum board to gyps

29、um board or other monolithicmaterials.2For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3Available from U.S.

30、Government Printing Office, Washington, DC 20402.4Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.C840 1123.2.19 moderate contact, nthe edges and ends are butted at joints but not forced together.3.2.19.1 DiscussionSmall

31、gaps not greater than14 in. (6 mm) are acceptable (see 7.4)3.2.20 parallel or vertical application, ngypsum board applied with the edges parallel to the framing member to which it isattached.3.2.21 perpendicular or horizontal application, ngypsum board application with the edges applied at right ang

32、les to theframing member to which it is attached.3.2.22 ready-mix type, na factory-prepared compound ready to be used without the addition of water.3.2.23 required, adjpertaining to a mandatory obligation imposed by a force outside this standard, such as a building code,project specification, contra

33、ct, or purchase order.3.2.24 setting type, na compound that hardens by a chemical reaction and increases in straightstrength through drying.3.2.25 skim coat, na thin layer of skim coat compound applied over the entire surface of finished gypsum board.3.2.25.1 DiscussionA skim coat is essentially a f

34、ilm of joint compound and is not applied at a readily measurable thickness.There is no specific mil thickness that constitutes a proper skim coat (See Appendix X8Appendix X7).3.2.26 skim coat compound, njoint compound, or a material specifically formulated and manufactured for use as a skim coat.3.2

35、.27 specified, adjpertaining to a mandatory requirement of this standard or a referenced requirement (see 3.2.21).3.2.28 spotting fastener heads, nthe application of compound to cover the fastener head to create a monolithic surface.3.2.29 taping compound (sometimes called embedding compound), na co

36、mpound used for embedding and bonding joint tapeand for the first coat over the heads of fasteners and flanges of accessories.3.2.30 taping of joints, nthe application of compound and joint reinforcing tape to the joints between adjoining gypsumboards.3.2.31 treated joint, na joint between gypsum bo

37、ards that has been covered with joint tape and joint compound as specifiedin 22.3.3.123.3.3.1, 22.3.3.223.3.3.2, or 22.3.3.323.3.3.3.3.2.31.1 DiscussionStrip moldings or similar devices shall be permitted.4. Environmental Conditions4.1 Application of Gypsum Board, Joint Treatment Materials, and Adhe

38、sivesRoom temperature shall be maintained at not lessthan 40 F (4 C) during application of gypsum board except when adhesive is used for the attachment of gypsum board. For thebonding of adhesive, joint treatment, texturing, and decoration, the room temperature shall be maintained at not less than 5

39、0 F(10 C) for 48 h prior to application and continuously thereafter until completely dry.4.1.1 When a temporary heat source is used, the temperature shall not exceed 95 F (35 C) in any given room or area.4.1.2 Adequate ventilation shall be maintained in the working area during installation and curin

40、g period.4.2 Gypsum board shall be protected from direct exposure to rain, snow, sunlight, or other excessive weather conditions.NOTE 1Where manufacturers recommendations differ from the above, follow their recommendations.4.3 Ready-mixed joint compounds shall be protected from freezing, exposure to

41、 extreme heat, and direct sunlight.5. Materials and Manufacture5.1 Gypsum Boards A family of gypsum sheet products as defined in Terminology C11.5.1.1 Type X (Special Fire-Resistant) Gypsum Wallboard, Gypsum Backing Board, Water-Resistant Gypsum Backing Board, orExterior Gypsum Sofft BoardGypsum boa

42、rd that provides a greater degree of fire resistance than regular gypsum board asdefined in Specification C1396/C1396M.5.1.2 Foil-Backed Gypsum Wallboard or Gypsum Backing BoardRegular or Type X gypsum board with foil laminated to theback surface. The foil is a vapor retarder.5.1.3 Predecorated Gyps

43、um BoardGypsum board with a decorative wall covering or coating applied in-plant by the gypsumboard manufacturer.5.2 Gypsum Wallboard See Specification C1396/C1396M.5.3 Gypsum Backing Board and CoreboardSee Specification C1396/C1396M.5.4 Water-Resistant Gypsum Backing BoardSee Specification C1396/C1

44、396M.5.5 Exterior Gypsum Sofft BoardSee Specification C1396/C1396M.5.6 Gypsum Ceiling BoardSee Specification C1396/C1396M.5.7 Finishing Materials:5.7.1 CompoundsTaping compound, finishing compound, and all-purpose compound shall meet the requirements ofSpecification C475/C475M.5.7.2 Mix compounds in

45、 accordance with the manufacturers directions.5.7.3 Joint TapeSee Specification C475/C475M.5.8 Fasteners:5.8.1 NailsSee Specification C514.5.8.1.1 Nails for use with pressure treated lumber shall be compatible with the preservative treated and fire retardant treatedlumber.C840 1135.8.2 Screws:5.8.2.

46、1 See Specification C1002 for screws for fastening gypsum board to wood members, steel members less than 0.03 inthickness, and to gypsum board.5.8.2.2 See Specification C754 and Specification C954 for screws for fastening gypsum board to steel members from 0.033 to0.112 in. in thickness.5.8.2.3 Scre

47、ws for use with pressure treated lumber shall be compatible with the preservative treated and fire retardant treatedlumber.5.8.3 StaplesNo. 16 USS gage flattened galvanized wire staples with716-in. (11.1-mm) wide crown outside measurement.Legs shall have divergent points.NOTE 2Use only for the base

48、ply of two-ply gypsum board application.5.8.3.1 Staples for use with pressure treated lumber shall be compatible with the preservative treated and fire retardant treatedlumber.5.9 Adhesives:5.9.1 Fastening Gypsum Board to Wood FramingSee Specification C557.5.9.2 Fastening Gypsum Board to Steel Frami

49、ngAs specified by the manufacturer.5.9.3 Laminating Gypsum Board to Gypsum BoardLaminating compounds, taping compound, or adhesive shall be asspecified by the manufacturer. Note3Adhesives for the installation of ceramic tile, see Appendix X4.5.10 Framing Members:5.10.1 Wood framing members shall conform to PS20, American Softwood Lumber Standards. The surface to which abuttingedges or ends are attached shall be not less than 112 in. (38.1 mm) wide. For internal corners or angles, the bearing surface shallnot be