1、Designation:C93309 Designation: C933 11Standard Specification forWelded Wire Lath1This standard is issued under the fixed designation C933; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in pare
2、ntheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers welded wire lath, flat or self-furring, with or without backing, designed for use as a base to receiveportland cement-base
3、d interior plaster and exterior stucco.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.2. Referenced Documents2.1 ASTM Standards:2A
4、641/A641M Specification for ZincCoated (Galvanized) Carbon Steel WireC11 Terminology Relating to Gypsum and Related Building Materials and Systems2.2 Federal Specifications:UU-B-790 Building Paper, Vegetable Fiber: (Kraft, Waterproofed, Water Repellent and Fire Resistant)33. Terminology3.1 Definitio
5、ns of terms used in this standard shall be in accordance with Terminology C11.4. Materials and Manufacture4.1 Welded wire lath shall be fabricated from not less than 0.0625 in. (1.588 mm), cold-drawn, galvanized steel wire,conforming to Specification A641/A641M.4.1.1The wire shall be zinc-coated (ga
6、lvanized) in accordance with Specification4.1.1 Diameter tolerance for galvanized wire shall be in accordance with Specification A641/A641M.4.1.2The backing shall conform to Federal Specification UU-B-7904.1.2 The wire shall be zinc-coated (galvanized) in accordance with Specification A641/A641M.4.1
7、.3 The backing shall conform to Federal Specification UU-B-790. The backing shall be either absorptive or water resistant.The backing shall have a bursting strength of not less than that required to maintain integrity under normal hand- ormachine-application pressures.4.1.3The4.1.4 The backing shall
8、 be attached to the lath to prevent accidental removal during shipping, handling or installation.Attachment of the backing shall allow lapping of wire-to-wire and backing-to-backing of not less than one mesh at ends and edgesand shall permit full embedment, in not less than14 in. (6 mm) of plaster,
9、of not less than one-half of the total length and widthof the wire.4.1.4The4.1.5 The thickness of the embedment of the lath and plaster shall be measured from the back plane of the back wire,exclusive of furring, to the backing or surface of the substrate.5. Dimensions and Permissible Variations5.1
10、Openings and Stiffening:5.1.1 Lath shall be welded at all intersections of wire to form openings not more than 2 in. (51 mm) by 2 in. (51 mm).5.1.2 Heavy-duty lath shall be stiffened continuously and parallel to the long dimension of the lath at intervals of not more than6 in. (152 mm). Wire stiffen
11、ers used for this purpose shall range from 15-gauge (0.072 in.) to 11-gauge (0.1205 in.). The weight1This specification is under the jurisdiction of ASTM Committee C11 on Gypsum and Related Building Materials and Systems and is the direct responsibility ofSubcommittee C11.02 on Specifications and Te
12、st Methods for Accessories and Related Products.Current edition approved July 15, 2009. Published August 2009. Originally approved in 1980. Last previous edition approved in 2007 as C93307b. DOI:10.1520/C0933-09.Current edition approved Dec. 1, 2011. Published January 2011. Originally approved in 19
13、80. Last previous edition approved in 2009 as C933 09. DOI:10.1520/C0933-11.2For 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
14、the ASTM website.3Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.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
15、 previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM 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 o
16、f 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.per square yard shall range from 1.14 to 1.95 lb/yd2(0.618 to 1.058 kg/m2) for the heavy-duty lath.5.1.3 Self-furring crimps on self
17、-furring lath shall project not less than14 in. (6.4 mm) from the plane of the back of the lath.5.2 ThicknessThe nominal thickness shall be18 in. (3.2 mm), exclusive of self-furring crimps, with a permissible variationof 6132 in. (0.8 mm).5.3 WidthThe nominal width shall be 28 in. (710 mm) to 54 in.
18、 (1370 mm), with a permissible variation of 634 in. (19 mm).5.4 LengthThe minimum length shall be 48 in. (1220 mm) for sheets or a maximum of 150 ft (45.720 m) for rolls with apermissible variation of 634 in. (19 mm) for sheets or rolls.5.5 WeightThe nominal weight, exclusive of backing, shall be fr
19、om 1.14 to 1.95 lb/yd2(0.618 to 1.058 kg/m2). Permissiblevariation in percentage over and under the nominal weights shall be in accordance with mill tolerances.6. Sampling6.1 When specified by the purchase agreement, samples of welded wire lath shall be taken at the place of manufacture or at thepla
20、ce of destination. If samples are taken at the destination, such samples shall be taken within 24 h of the receipt of the material.6.2 At least 0.25 % of the number of sheets of welded wire lath in a shipment, but not less than three sheets, shall be so selectedas to be representative of the shipmen
21、t and shall constitute a sample for the purpose of tests by the purchaser or user.7. Inspection7.1 Inspection of the welded wire lath shall be agreed upon between the purchaser and the producer or supplier as part of thepurchase agreement.8. Rejection8.1 Rejection of welded wire lath that fails to c
22、onform to the requirements of the specification shall be reported to the produceror supplier promptly and in writing. The notice of rejection shall contain a statement documenting how the welded wire lath hasfailed to conform to the requirements of the specification.9. Packaging and Package Marking9
23、.1 Welded wire lath shall be packaged in bundles or rolls.9.2 Unless otherwise required by the purchase agreement, lath shall have legibly marked thereon the following: the productdescription; the name of the producer or seller; the brand name (if any); and the ASTM designation for the product.9.2.1
24、 Each bundle or roll of lath with no backing shall be marked with metal or paper tags securely attached to the bundles orrolls.9.2.2 Each sheet of lath with backing shall be marked on the backing material.10. Keywords10.1 lath; metal plaster base; plaster; self-furring lath; stucco; wire lathSUMMARY
25、 OF CHANGESCommittee C11 has identified the location of selected changes to this specification since the last issue,C93307b,C933 09, that may impact the use of this specification. (Approved July 15, 2009)Dec. 1, 2011)(1) Revised 4.1.3 to change the embedment depth from18 in. to14 in. ) Added 4.1.1.A
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27、entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standard
28、sand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committe
29、e on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).C933 112
