1、Designation: C406/C406M 10C406/C406M 15Standard Specification forRoofing Slate1This standard is issued under the fixed designation C406/C406M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in p
2、arentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the material characteristics, physical requirements, and sampling appropriate to the selection ofslate for use as roof s
3、hingles.1.2 Slates not included in this specification are those containing soft carbonaceous ribbons. The wide variation in physicalproperties and composition of such ribbon slates render their service life uncertain under some conditions of use.1.3 The values stated in either SI units or inch-pound
4、 units are to be regarded separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.2. Referenced Documents2.1 ASTM Standa
5、rds:2C119 Terminology Relating to Dimension StoneC120/C120M Test Methods of Flexure Testing of Slate (Breaking Load, Modulus of Rupture, Modulus of Elasticity)C121/C121M Test Method for Water Absorption of SlateC217/C217M Test Method for Weather Resistance of Slate3. Terminology3.1 DefinitionsDefini
6、tions shall be in accordance with Terminology C119.3.2 Definitions of Terms Specific to This Standard:3.2.1 service lifea period of time over which the slate material is expected to require no repair or replacement due toweathering.3.2.2 ribbonsnarrow bands of carbonaceous material, darker in color
7、than the surrounding slate. These ribbons are inclusionsof the original beds and are softer and less durable than the surrounding material.4. Classification4.1 Roofing slate shall be classified by grade in accordance with the physical requirements of Table 1, with the classificationlimited to the te
8、st specimen thickness, or greater thickness, as determined under Test Methods C120/C120M.4.2 When comparing slates of the same grade and equal thickness, but from various sources, slates which meet the requiredbreaking load at the lowest specimen thickness will yield the best performance on the roof
9、 in terms of resistance to impact damage.4.3 Expected service life of the various grades, depending on geographic location and environmental exposure, is as follows:Grade Service Life (years)Grade S1 over 75Grade S2 40 to 75Grade S3 20 to 405. Ordering Information5.1 ColorThe commercial color specif
10、ied should be preceded by the words “unfading” or “semi-weathering” or “weathering”to indicate the allowable change in the original slate color, over time, upon exposure on the roof.1 This specification is under the jurisdiction of ASTM Committee C18 on Dimension Stone and is the direct responsibili
11、ty of Subcommittee C18.03 on MaterialSpecifications.Current edition approved Sept. 1, 2010April 1, 2015. Published October 2010May 2015. Originally approved in 1957 as C406 57 T. Last previous edition approved in20062010 as C406 06C406 10. 1. DOI: 10.1520/C0406_C406M-10.10.1520/C0406_C406M-15.2 For
12、referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provi
13、de 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 appropriate. In all cases only the current versionof the s
14、tandard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15.2 Standard RoofsSloping roofs utilizing a nominal thickness of 14 to 14in. 4.8 to 6.4 6 mm, are known as standard
15、 roofs.These shingles shall be rectangular unless otherwise specified. These shingles shall be machine punched or drilled for two nailslocated for proper headlap.the required headlap and installation methods.5.3 Textural RoofsSloping roofs utilizing various sizes, thicknesses, textures, and colors f
16、or architectural effects, are knownas textural roofs. These shingles shall be machine punched or drilled for two nails located for proper headlap.the required headlapand installation methods.5.4 Graduated RoofsSloping roofs utilizing a greater range of sizes, thicknesses, and exposed lengths of shin
17、gles, are knownas graduated roofs. The slates are arranged on the roof so that the thickest and longest occur at the eaves and gradually diminishin size and thickness toward the ridges. These shingles shall be machine punched or drilled for two nails located for properheadlap.the required headlap an
18、d installation methods.6. Physical Requirements6.1 Slate supplied under this specification shall conform to the physical requirements listed in Table 1 and be no thinner thanthe thickness of the average of the test samples reported under Test Methods C120/C120M.6.2 Slates with broken corners on the
19、exposed ends shall not be installed when either the base or leg of the right triangular piecebroken off is greater than 112 in. 40 mm. Slates with broken corners are acceptable for cutting stock.6.3 The curvature of shingles shall not exceed 18 in. in 12 in. 3 mm in 300 mm. Curved slate shall be she
20、ared and punchedto permit it to be laid with the convex side up.6.4 “Knots” and “knurls” are rounded defects, which geological features that affect the smoothness of split. They are acceptableon the exposed portion of the top face but on other parts will prevent close contact of shingles. Shingles o
21、f a slate shingle. Forstandard roofs, shingles having knots or knurls on the covered portions projecting in excess of 116 in. 1.5 mm on the back orcovered portions shall not be used if they prevent their location on the shingle prevents proper fit and contact.6.5 Slate shall be free from ribbons.6.6
22、 Not more than 1 % of broken slates, including those having cracks materially precluding ringing when sounded, shall beaccepted.6.7 Face dimensions shall not differ from those specified by more than 18 in. 3 mm.6.8 Slates shall be trimmed with right angle corners, square to within 18 in. in 12 in. 3
23、 mm in 300 mm.7. Sampling7.1 Samples for testing of characteristics and physical properties, if required, shall be representative of the slate to be used.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.
24、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 time by the responsible technical committee and must be reviewed ev
25、ery 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 receive careful consideration at a meeting of theresponsible techn
26、ical 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 International, 100 Barr Harbor Drive, PO Box C700, West Conshohock
27、en, 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 photoc
28、opy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 1 Physical RequirementsClassification Breaking Load,min lbf(or N)AAbsorp-tion, max,%BDepth ofSoftening, max,in. (mm)CGrade S1 575 2560 0.25 0.002 0.05Grade S2 575 2560 0.36 0.008 0.20Grade S3 575 2560 0.45 0.014 0.36A See Test Methods C120/C120M.B See Test Method C121/C121M.C See Test Method C217/C217M.C406/C406M 152
