ASTM C1047-99
(Specification)Standard Specification for Accessories for Gypsum Wallboard and Gypsum Veneer Base
Standard Specification for Accessories for Gypsum Wallboard and Gypsum Veneer Base
SCOPE
1.1 This specification covers accessories used in conjunction with assemblies of gypsum wallboard and gypsum veneer plaster to protect edges and corners and to provide architectural features. (See Fig. 1.)
1.2 The values stated in inch-pound units are to be regarded as the standard. The SI units in parentheses are provided for information purposes only. The SI equivalents of inch-pound units may be approximate.
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Designation: C 1047 – 99
Standard Specification for
Accessories for Gypsum Wallboard and Gypsum Veneer
Base
This standard is issued under the fixed designation C 1047; 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 (e) 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 * Interior Profile Extrusions
1.1 This specification covers accessories used in conjunc-
3. Terminology
tion with assemblies of gypsum wallboard and gypsum veneer
3.1 Definitions:
plaster to protect edges and corners and to provide architectural
3.1.1 flange—that part of the accessory extending out on the
features (see Fig. 1).
face of the gypsum board.
1.2 The values stated in inch-pound units are to be regarded
3.2 Definitions of Terms Specific to This Standard:
as the standard. The SI units in parentheses are provided for
3.2.1 accessories—cornerbeads, edge trims, and control
information purposes only. The SI equivalents of inch-pound
joints, such as casing beads, bull noses, and stops.
units may be approximate.
3.2.2 control joint—a formed product used for designed or
2. Referenced Documents required separations between adjacent surfaces of gypsum
boards or gypsum veneer base.
2.1 ASTM Standards:
3.2.3 cornerbead—a formed metal, plastic, or metal and
A 463 Specification for Steel Sheet, Aluminum-Coated, by
paper angle for outside corners of gypsum boards or gypsum
Hot-Dip Process
veneer base.
A 591/A 591M Specification for Steel Sheet, Electrolytic
3.2.4 edge trim—typically “J”- or “L”-shaped strip, as
Zinc-Coated, for Light Coating Mass Applications
shown in Fig. 1, formed of metal, plastic, or metal and paper to
A 653/A 653M Specification for Steel Sheet, Zinc-Coated
cover exposed ends or edges of gypsum board or gypsum
(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed)
veneer base.
by the Hot-Dip Process
B 69 Specification for Rolled Zinc
4. Materials and Manufacture
B 117 Practice of Salt Spray (Fog) Apparatus
4.1 Steel accessories and steel components of accessories
C 475 Specification for Joint Compound and Joint Tape for
5 manufactured from steel and paper in combination shall be
Finishing Gypsum Board
5 manufactured from zinc-coated cold-roll (coil or cut length)
C 587 Specification for Gypsum Veneer Plaster
sheet steel not less than 0.012-in. (0.30-mm) thick before
D 1788 Specification for Rigid Acrylonitrile-Butadiene-
6 application of coating.
Styrene (ABS) Plastics
4.1.1 Sheet steel, zinc-coated by the hot-dip process, shall
D 2092 Guide for Preparation of Zinc-Coated (Galvanized)
7 be in accordance with Specification A 653/A 653M, minimized
Steel Surfaces for Painting
spangle, minimum G-30 coating.
D 3678 Specification for Rigid Poly(Vinyl Chloride) (PVC)
4.1.2 Sheet steel, zinc-coated by the electrolytic process
shall be in accordance with Specification A 591/A 591M,
minimum coating on surface side to be 0.000140 in. (0.00356
This specification is under the jurisdiction of ASTM Committee C-11 on mm), minimum coating on reverse side to be 0.00010 in.
Gypsum and Related Building Materials and Systems and is the direct responsibility
(0.00254 mm).
of Subcommittee C11.02 on Specifications and Test Methods for Accessories and
4.1.3 Sheet steel, aluminum-coated, shall be in accordance
Related Products.
with Specification A 463 minimum T1-40 coating.
Current edition approved Oct. 10, 1999. Published December 1999. Originally
published as C 1047 – 92. Last previous edition C 1047 – 98.
4.1.4 Phosphatizing (as specified in Method A of Guide
Annual Book of ASTM Standards, Vol 01.06.
D 2092) or other surface treatments may be used to ensure
Annual Book of ASTM Standards, Vol 02.04.
4 compatibility and bond as specified in Section 5.
Annual Book of ASTM Standards, Vol 03.02.
Annual Book of ASTM Standards, Vol 04.01.
Discontinued; see 1989 Annual Book of ASTM Standards, Vol 08.02.
7 8
Annual Book of ASTM Standards, Vol 06.02. Annual Book of ASTM Standards, Vol 08.04.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C 1047
FIG. 1 Accessories for Gypsum Wallboard and Gypsum Veneer Base
4.2 Zinc accessories shall be manufactured from rolled zinc 6.3 Length tolerances shall be 6 ⁄16 in. (64.8 mm).
in accordance with Specification B 69, Type I, not less than 6.4 The size of the edge trim shall suit the thickness of the
0.012-in. (0.305-mm) thick. gypsum board used.
7 1
4.3 Plastic for accessories shall be manufactured from rigid 6.5 The mi
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