1、Designation: C933 13C933 14Standard 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 parentheses indi
2、cates 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-based interior p
3、laster 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:2A641/A641M Sp
4、ecification 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 Definitions of terms
5、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.4.1.1 Diameter tolerance for galvanized wire shall
6、 be in accordance with Specification A641/A641M.4.1.2 The wire shall be zinc-coated (galvanized) in accordance with Specification A641/A641M.4.1.3 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
7、strength of not less than that required to maintain integrity under normal hand- ormachine-application pressures.4.1.4 The backing shall 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 b
8、acking-to-backing of not less than one mesh at ends and edgesand shall permit full embedment, in not less than 14 in. (6 mm) of plaster, of not less than one-half of the total length and widthof the wire.4.1.5 The thickness of the embedment of the lath and plaster shall be measured from the back pla
9、ne of the back wire, exclusiveof furring, to the backing or surface of the substrate.5. Dimensions and Permissible Variations5.1 Openings and Stiffening:5.1.1 Lath shall be welded at all intersections of wire to form openings not more than 2 in. 2 in. (51 mm) by 2 in. (51 mm).5.1.2 Reinforced lath s
10、hall be permitted to be reinforced continuously and parallel to the long dimension of the lath at intervalsof not more than 6 in. (150 mm). Wires used for this purpose shall range from 0.072 in. (1.9 mm) to 0.1205 in. (3.1 mm). (3.1 mm).Reduction of the size of the openings to less than 2 in. 2 in.
11、(51 mm) by 2 in. 2 in. (51 mm) shall also be permitted.1 This 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 Test Methods for Accessories and Related Produ
12、cts.Current edition approved May 1, 2013Aug. 15, 2014. Published June 2013October 2014. Originally approved in 1980. Last previous edition approved in 20112013 asC933 11.C933 13. DOI: 10.1520/C0933-13.10.1520/C0933-14.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactAST
13、M Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.This docum
14、ent 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, ASTM recommends that users consult prior editions as a
15、ppropriate. 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 standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United
16、States15.1.3 Self-furring crimps on self-furring lath shall project not less than 14 in. (6 mm) from the plane of the back of the lath.5.2 ThicknessThe nominal thickness shall be 18 in. (3.2 mm), (3.2 mm), exclusive of self-furring crimps, with a permissiblevariation of 6132 in. (0.8 mm).5.3 WidthTh
17、e nominal width shall be 28 in. (700 mm) to 54 in. (1370 mm), with a permissible variation of 634 in. (19mm).(19 mm).5.4 LengthThe minimum length shall be 48 in. (1200 mm) for sheets or a maximum of 150 ft (45.720 m) for rolls with apermissible variation of 6634 in. (19 mm) for sheets or rolls.5.5 W
18、eightThe weight, exclusive of backing, shall be a minimum of 1.14 lb/yd2 (0.618 kg/m2). The weight of reinforced lath,exclusive of backing, shall be a minimum of 1.95 1.95 lblb/ydyd2 (1.058 kg/m2).6. Sampling6.1 When specified by the purchase agreement, samples of welded wire lath shall be taken at
19、the place of manufacture or at theplace 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 selecteda
20、s to be representative of the shipment 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 Rejectio
21、n of welded wire lath that fails to conform 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 specificat
22、ion.9. Packaging and Package Marking9.1 PackagingWelded wire lath shall be packaged in bundles bundles, rolls, or rolls.pallets.9.2 MarkingUnless otherwise required by the purchase agreement, lath shall have legibly marked thereon the following: theproduct description; the name of the producer or se
23、ller; manufacturer or distributor, country of origin and contact information; thebrand name (if any); and the ASTM designation for the product.9.2.1 Each bundle or roll of lath with no backing shall be marked with metal or paper tags securely attached to the bundles orwith metal tags, paper tags, pl
24、astic or metal banding, or paper wrapping on rolls.9.2.2 Each flat sheet and roll of lath with backing shall be marked on the backing material.9.2.3 The quantity for flat sheet bundles shall be square yards and number of sheets per bundle marked with metal or paper tagson the pallet or bundle. Rolls
25、 shall be marked with metal tags, paper tags, plastic or metal banding, or paper wrapping on rolls.The marking for flat sheets and rolls shall indicate the mesh-opening size and wire thickness of rolls.10. Keywords10.1 lath; metal plaster base; plaster; self-furring lath; stucco; wire lathSUMMARY OF
26、 CHANGESCommittee C11 has identified the location of selected changes to this specification since the last issue,C933 13, that may impact the use of this specification. (Approved Aug. 15, 2014.)(1) Revised paragraphs 9.1 9.2.2.(2) Added paragraph 9.2.3.SUMMARY OF CHANGESCommittee C11 has identified
27、the location of selected changes to this specification since the last issue,C933 11, that may impact the use of this specification. (Approved May 1, 2013).)(1) Revised paragraph 5.1.2.C933 142(2) Revised paragraph 5.5.ASTM International takes no position respecting the validity of any patent rights
28、asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any tim
29、e 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 standardsand should be addressed to ASTM International Headquarters. Your comments will re
30、ceive 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 Committee on Standards, at the address shown below.This standard is copyrighted by ASTM In
31、ternational, 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 Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 143
