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ASTM C847-95(2000)

(Specification)

Standard Specification for Metal Lath

Standard Specification for Metal Lath

SCOPE
1.1 This specification covers sheet lath, expanded metal lath, diamond mesh, flat and self-furring, and rib metal lath, 1/8 and 3/8 in. (3.2 and 9.6 mm), all with or without backing and designed to be used as a base for gypsum or portland cement plaster.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are for information only.

General Information

Status
Historical
Publication Date
09-May-2000
ICS
77.140.80 - Iron and steel castings
Technical Committee
C11 - Gypsum and Related Building Materials and Systems
Drafting Committee
C11.02 - Specifications and Test Methods for Accessories and Related Products
Current Stage
Ref Project

Relations

Replaced By
ASTM C847-04 - Standard Specification for Metal Lath
Effective Date
01-Dec-2004
Referred By
ASTM C1063-23 - Standard Specification for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster
Effective Date
10-May-2000
Referred By
ASTM C1780-23a - Standard Practice for Installation Methods for Cement-based Adhered Masonry Veneer
Effective Date
10-May-2000
Referred By
ASTM C841-23 - Standard Specification for Installation of Interior Lathing and Furring
Effective Date
10-May-2000
Referred By
ASTM C1002-22 - Standard Specification for Steel Self-Piercing Tapping Screws for Application of Gypsum Panel Products or Metal Plaster Bases to Wood Studs or Steel Studs
Effective Date
10-May-2000
Referred By
ASTM C954-22 - Standard Specification for Steel Drill Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Steel Studs from 0.033 in. (0.84 mm) to 0.112 in. (2.84 mm) in Thickness
Effective Date
10-May-2000

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ASTM C847-95(2000) - Standard Specification for Metal LathASTM C847-95(2000) - Standard Specification for Metal Lath
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ASTM C847-95(2000) - Standard Specification for Metal Lath
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Standards Content (Sample)


NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C 847 – 95 (Reapproved 2000)
Standard Specification for
Metal Lath
This standard is issued under the fixed designation C847; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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 * (9.6mm).Thenominalthicknessofself-furringdiamondmesh
shall be ⁄16 in. (7.9 mm).
1.1 This specification covers sheet lath, expanded metal
1 4.2 Width—The nominal width of metal lath shall be 27 in.
lath, diamond mesh, flat and self-furring, and rib metal lath, ⁄8
(686 mm).
and ⁄8 in. (3.2 and 9.6 mm), all with or without backing and
4.3 Length—The nominal length of metal lath shall be 96
designed to be used as a base for gypsum or portland cement
in. (2438 mm).
plaster.
4.4 Weight—The nominal weight of metal lath shall be as
1.2 The values stated in inch-pound units are to be regarded
follows:
as the standard. The values in parentheses are for information
4.4.1 U.S. Nominal Weights:
only.
2 2
Type: Weight, lb/yd (kg/m )
2. Referenced Documents
Diamond mesh 2.5 (1.4); 3.4 (1.8)
2.1 ASTM Standards:
Flat rib 1.8 (1.0); 2.75 (1.5); 3.4 (1.8)
⁄8-in. rib 3.4 (1.8); 4.0 (2.1)
A366/A366M Specification for Steel, Sheet, Carbon,
Sheet 4.5 (2.4)
Cold-Rolled, Commercial Quality
A653/A653M Specification for Steel Sheet, Zinc-Coated 4.4.2 Canadian Nominal Weights:
2 2
(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) Type: Weight, lb/yd (kg/m )
by the Hot-Dip Process
Diamond mesh 2.5 (1.4); 3.0 (1.6); 3.4 (1.8)
Flat rib 1.8 (1.0); 2.5 (1.4); 3.0 (1.6)
3. Material
⁄8-in. rib 3.0 (1.6); 3.5 (1.9); 4.0 (2.1)
3.1 Metal lath shall be fabricated from cold-rolled carbon
4.5 Permissible Variations—The permissible variations
steel sheet of commercial quality conforming to Specification
shall be as follows:
A366/A366M. Galvanized metal lath shall have a G60
4.5.1 Thickness, 6 ⁄64 in. (0.4 mm).
coating in accordance with Specification A653/A653M.
4.5.2 Width, 6 ⁄16 in. (4.8 mm).
3.2 Backing shall be netting, film, paper, or felt attached to
4.5.3 Length,−0in.,+2 ⁄2 in. (12.7 mm).
the lath sufficiently enough to prevent accidental removal
4.5.4 Weight, 6 10%.
during shipping, handling, or installation.Attachment of back-
ing shall also allow lapping of metal to metal and backing to
5. Finish
backing, 1 in. (25.4 mm) on the ends and ⁄2 in. (12.7 mm) on
5.1 Metal lath shall be coated with a water barrier film such
the sides.
as asphalt or non-reemulsifiable water base paint unless fabri-
cated from galvanized steel.
4. Dimensions, Mass, and Permissible Variations
4.1 Thickness—The nominal thickness of diamond mesh
6. Inspection
and flat rib metal lath shall be ⁄8 in. (3.2 mm). The nominal
6.1 Inspection of the material shall be agreed upon between
thickness of other rib metal lath shall be as designated, ⁄8in.
the purchaser and supplier as part of the purchase contract.
7. Rejection and Rehearing
This specificatio
...

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1.5.1 Within the text, the SI units are shown in brackets.  
1.5.2 This practice is expressed in both inch-pound units and SI units; however, unless the purchase order or contract specifies the applicable M-specification designation (SI units), the inch-pound units shall apply.  
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This specification covers gray iron castings that are statically cast in permanent molds. Castings under this specification are classified into a number of grades (A-SA, A-SB, A-SC, A-SS, A-CA, A-CB, A-CC, N-SA, N-SB, N-SC,N-SS, N-CA, N-CB and N-CC) based on the properties of separately cast test bars. The grades are designated A for annealed or N for normalized; followed by an S or a C to designate a solid or a cored casting; followed by an A, B, C, or S to designate the test bar to be poured with the castings. The cast test bar shall be selected on the basis of the controlling section size of the casting and shall have the specified dimensions (diameter and length). Castings may be produced in the as cast state provided the tensile strength and Brinell hardness requirements are met. The chemical composition and heat treatment shall be such as to produce these mechanical requirements as well. A suitable permanent mold design for separately cast test bars is described and the tension test requirements are detailed.
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1.2 No precise quantitative relationship can be stated between the properties of the iron in various locations of the same casting or between the properties of a casting and those of a test specimen cast from the same iron (see Appendix X1).  
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