ASTM C840-99
(Specification)Standard Specification for Application and Finishing of Gypsum Board
Standard Specification for Application and Finishing of Gypsum Board
SCOPE
1.1 This specification covers the minimum requirements for the methods of application and finishing of gypsum board, including related items and accessories.
1.2Details of construction for a specific assembly to achieve the required fire resistance shall be obtained from reports of fire-resistance tests, engineering evaluations, or listings from 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-rated construction, this specification shall govern.
1.3 Where sound control is required for a gypsum board assembly, details of construction shall be in accordance with reports of 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 of Single-Ply Gypsum Board to Wood Framing Members 8II Application of Two-Ply Gypsum Board to Wood Framing Members9III Application of Gypsum Board by Adhesive Nail-On to Wood Framing Members10IV Semi-Solid Gypsum Board Partitions11V Solid Gypsum Board Partitions12VI Application of Gypsum Board with Adhesives to Interior Masonry or Concrete Walls13VII Application of Gypsum Board to Rigid Foam Insulation14VIII Application of Gypsum Board to Steel Framing and Furring15IX Arches and Bending Radii16X Application of Gypsum Board to Receive Tile by Adhesive Application17XI Exterior Application of Gypsum Wallboard and Exterior Gypsum Soffit Board18XII Floating Interior Angles19XIII Control (Expansion) Joints20XIV Foil-Backed Gypsum Board21
The values stated in inch-pound units are to be regarded as the standard. The SI (metric) values given in parentheses are approximate and are provided for information purposes only.
1.6 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.
1.7 The following precautionary caveat pertains only to Sections 6-23. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1.7.1 For specific precautionary statements, see 4.1.1 , 4.1.2 and 22.5.
General Information
Relations
Standards Content (Sample)
STD.ASTM CB40-ENGL I,999 m 0759510 Oh48577 220 -
Designation: C 840 - 99
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Standard Specification for
Application and Finishing of Gypsum Board’
This standard is issued under the fixed designation C 840; the number immediately following the designation indicates the year of
original adoption or. in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (c) indicates an editorial change since the last revision or reapproval.
This specification has been approved for use by agencies of the Department of Defense.
1. Scope parentheses are approximate and are provided for informa-
tion purposes only.
1.1 This specification covers the minimum requirements for
1.7 The text of this specification references notes and
the methods of application and finishing of gypsum board,
footnotes which provide explanatory material. These notes and
including related items and accessories.
footnotes (excluding those in tables and figures) shall not be
1.2 Where a fire resistance rating is required for a gypsum
considered as requirements of the specification.
board assembly, details of construction shall be in accordance
1.8 The following precautionary caveat pertains only to
with reports of fire tests of assemblies that have met the
Sections 6 through 23. This standard does not purport to
requirements of the fire rating imposed.
address all of the safety concerns, if any, associated with its
1.2.1 Where this specification is more stringent (size or
use. It is the responsibility of the user of this standard to
thickness of framing: size and spacing of fasteners) than the
establish appropriate safety and health practices and deter-
fire-rated construction, this specification shall govern.
mine the applicability of regulatory limitations prior to use.
1.3 Where sound control is required for a gypsum board
1.8.1 For specific precautionary statements, see 4.1.1,4.1.2
assembly, details of construction shall be in accordance with
and 22.5.
reports of acoustical tests of assemblies that have met the
required acoustical values.
2. Referenced Documents
1.4 Unheated spaces above gypsum board ceilings shall be
2.1 ASTM Standards:
properly ventilated (see Appendix X2).
C 11 Terminology Relating to Gypsum and Related Build-
1.5 The various application systems are located in the
ing Materials and Systems’
following sections:
C 36 Specification for Gypsum Wallboard’
I Application of Single-Ply Gypsum Board to Wood Framing 8
C 442 Specification for Gypsum Backing Board and
Members
Coreboard
II 9
Application of Two-Ply Gypsum Board to Wood Framing
C 475 Specification for Joint Compound and Joint Tape for
Members
Finishing Gypsum Board’
III Application of Gypsum Board by Adhesive Nail-On to Wood 10
Framing Members C 514 Specification for Nails for the Application of
IV Semi-Solid Gypsum Board Partitions 11
Gypsum Board’
v Solid Gypsum Board Partitions 12
C 557 Specification for Adhesives for Fastening Gypsum
VI 13
Application of Gypsum Board with Adhesives to Interior
Wallboard to Wood Framing3
Masonry or Concrete Walls
C 630 Specification for Water-Resistant Gypsum Backing
VII
Application of Gypsum Board to Rigid Foam Insulation 14
Board2
VIII Application of Gypsum Board to Steel Framing and Furring 15
C 645 Specification for Non-Load (Axial) Bearing Steel
IX Arches and Bending Radii 16
X Application of Gypsum Board to Receive Tile by Adhesive 17
Studs, Runners (Track), and Rigid Furring Channels for
Application
Screw Application of Gypsum Board2
XI Exterior Application of Gypsum Wallboard and Exterior 18
C 754 Specification for Installation of Steel Framing Mem-
Gypsum Softit Board
bers to Receive Screw-Attached Gypsum Board2
XII
Floating Interior Angles 19
C 931 Specification for Exterior Gypsum Soffit Board2
XIII Control (Expansion) Joints 20
C 954 Specification for Steel Drill Screws for the Applica-
XIV Foil-Backed Gypsum Board 21
tion of Gypsum Board or Metal Plaster Bases to Steel
1.6 The values stated in inch-pound units are to be
Studs from 0.033 in. (0.84 mm) to 0.112 in. (2.84 mm) in
regarded as the standard. The SI (metric) values given in
Thickness2
C 1002 Specification for Steel Drill Screws for the Appli-
’ This specification is under the jurisdiction of ASTM Committee C-l I on
cation of Gypsum Board or Metal Plaster Bases2
Gypsum and Related Building Materials and Systems and is the direct responsibility
of Subcommittee C 11.03 on Specifications for Application of Gypsum and Other
Products in Assemblies.
Current edition approved June 10, 1999. Published July 1999. Originally ’ Annual Book of ASTM Standards, Vol 04.01.
published as C 840 - 79. Last previous edition C 840 - 98. 3Annual Book of ASTM Standards, Vol 15.06.
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