SANS 1039-2008 Wooden ceiling and panelling boards《木制天花板和壁板》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21114-1 SANS 1039:2008Edition 1.3Any reference to SABS 1039 is deemedto be a reference to this standard(Government Notice No. 1373 of 8 No

4、vember 2002)SOUTH AFRICAN NATIONAL STANDARD Wooden ceiling and panelling boards Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 1039:2008 Editio

5、n 1.3 Table of changes Change No. Date Scope Amdt 1 1987 Amended to change the requirements for end-matching and for finger-joints. Amdt 2 1991 Amended to change a definition, to introduce two new definitions and to change the requirement for dimensions of plain ended boards, the requirement for gra

6、de and the requirement for permissible defects. Amdt 3 2008 Amended to change the designation of SABS standards to SANS standards, to remove reference to legislation in the foreword, to remove reference to the standardization mark scheme, to update the definition of “acceptable“, to update reference

7、d standards, to remove a comparison for discoloration, and to modify the requirement for the preservative treatment of timber. Foreword This South African standard was approved by National Committee StanSA SC 5110.08B, Sawn timber and semi-manufactured timber products Non-structural timber, in accor

8、dance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This document was published in June 2008. This document supersedes SABS 1039:1975 (first edition). A vertical line in the margin shows where the text has been technically modified by amendment Nos 1

9、, 2 and 3. Preface The purpose of this specification is to establish standards of dimension, profile, and grade on which architects and users can base the evaluation of their requirements. The grades as laid down in the specification are based on present market preferences. Where a specific appearan

10、ce as regards knottyness, discoloration (blue stain), resinous streaks, etc. is required, non-compliance with the appropriate requirements should be specified for a given grade. If non-specified features are required, such as wavy grain, colouring, lustre, etc., users may select on the basis of thes

11、e features within a grade. Users should note that whereas hardwood ceiling or panelling boards may be ordered to this specification, the percentage of sapwood permissible in a board has not been laid down. In general, users are warned that even where the species of timber and the grade for two lots

12、of boards are identical, the appearance of the boards may be different because of inherent variations in the raw material. The grades covered by this specification have been designed to meet with functional requirements of ceiling and panelling boards. The grade requirements of this specification ma

13、y be used to cover other comparable products for interior use, such as skirting, lining, etc. SANS 1039:2008 Edition 1.3 1 Contents Page Foreword Preface 1 Scope 3 2 Definitions 3 3 Grade requirements . 4 4 Physical requirements. 7 4.1 Dimensions. 7 4.2 Tolerances on dimensions . 8 4.3 Profiles . 8

14、4.4 Finish 8 4.5 Squareness of ends . 8 4.6 End-matching . 8 4.7 Moisture content. 8 4.8 Finger-joints 9 4.9 Plugs and fillings 9 4.10 Preservative treatment . 9 5 Packing and marking 9 6 Sampling and compliance with the specification 10 7 Inspection and methods of test. 11 Appendix A Applicable sta

15、ndards . 15 Appendix B Notes to purchasers. 15 Appendix C Recommended standard profiles for ceiling and panelling boards 16 SANS 1039:2008 Edition 1.3 2 This page is intentionally left blank SANS 1039:2008 Edition 1.3 3 Wooden ceiling and panelling boards 1 Scope 1.1 This specification covers three

16、grades of profiled boards (planed or planed and sanded) manufactured from hardwood or softwood timber and intended for use in ceilings or panelling. NOTE a) The titles of standards referred to by number in the specification are given in appendix A. b) Requirements that must or may be specified by th

17、e purchaser and those that may be agreed upon are listed in appendix B. c) Recommended standard profiles for ceiling and panelling boards and profile dimensions are given in appendix C. d) Assessment of compliance with the requirements of 4.10 and certain requirements of 4.8 requires special agreeme

18、nt between supplier and purchaser. Amdt 3 2 Definitions 2.1 For the purposes of this specification the following definitions shall apply: acceptable acceptable to the authority administering this standard, or to the parties concluding the purchase contract, as relevant Amdt 2; amdt 3 board ceiling o

19、r panelling board ceiling board planed or planed and sanded board that is machined to matching profiles on its edges and is plain-ended or end-matched, of nominal thickness 12 mm or 16 mm, of face width not less than 50 mm and not more than 140 mm, and intended for use in ceilings face-side that sid

20、e of a board intended to be visible in ceiling or panelling face width that width of the face of a board that remains visible when the board is assembled between two other boards SANS 1039:2008 Edition 1.3 4 hair check check of maximum width 0,25 mm kino ring an interposition of a hard, mostly dark

21、coloured layer of a gum-like substance normally following a growth ring lot not less than 50 and not more than 10 000 ceiling or panelling boards of the same species, grade, nominal thickness, nominal face width, and profile, from one manufacturer, submitted at any one time for inspection and testin

22、g machine offset deviation from parallelism between two opposite faces panelling board planed or planed and sanded board that is machined to matching profiles on its edges and is plain-ended or end-matched, of nominal thickness 12 mm, 16 mm, or 22 mm, of face width not less than 50 mm and not more t

23、han 140 mm, and intended for use in panelling profile area that surface area of a board that does not form part of the face-side or back resinated wood wood that contains resin and that therefore is of a darker colour than non-resinated wood Amdt 2 resin-impregnated wood wood impregnated with resin

24、Amdt 2 right-hand end-matching end-matching such that, when the face-side of the board is held vertically with the edge-tongue on the right-hand side, the groove of the end-match is at the top end of the board semi-loose knot knot that is attached to the surrounding wood for at least 60 % of its cir

25、cumference on the face-side of a board 3 Grade requirements 3.1 Species and grade 3.1.1 Species Boards shall be of the species specified by the purchaser. 3.1.2 Grade Boards shall be of clear grade, select knotty grade or knotty grade, as specified by the purchaser. Amdt 2 SANS 1039:2008 Edition 1.3

26、 5 3.2 Permissible defects 3.2.1 Face-side When inspected in accordance with 7.1, the face-side or (in the case of a board of which either of two faces may be used as the face-side) the worse face of a board shall not contain more than a combination of the maxima of permissible defects laid down in

27、tables 1 and 2, appropriate to the grade. Table 1 Permissible knot and knot-hole areas on the face-side 1 2 3 4 Size of knot or knot-hole area* and sum of sizes of knot or knot-hole areas in the worst 150 mm length of board, max. Defect Clear grade Select knotty grade Knotty grade Sound, tight knots

28、 Individual size Sum of sizes Nil Nil width of face width of face width of face Twice width of face Decayed or semi-loose knots or parts of knots or bark inclusions Individual size Sum of sizes Nil Nil 5 mm+ 10 mm+ 15 mm+ 30 mm+ Loose knots and knot-holes Nil Nil Nil * Provided that knots or knot-ho

29、les of size not exceeding 4 mm may be disregarded. + Provided that the distance between individual decayed or semi-loose knots or parts of knots or bark inclusions is at least 50 mm. SANS 1039:2008 Edition 1.3 6 Table 2 Permissible defects (other than knots and knot-holes) on the face-side 1 2 3 4 Q

30、uantity, dimension, sum of dimensions, or angle (as relevant), max. Defect Clear grade Select knotty grade Knotty grade Checks other than hair checks Nil Nil Nil Checks in knots, width. Nil 0,5 mm 1 mm Discoloration: Light Darker than light Nil Nil Nil Nil 10 % of face area Nil Gum or resin pockets

31、or veins, tight and open a) Number. b) Width c) Length Nil Nil Nil 3 per any 1 m of length 5 mm 25 mm 6 per any 1 m of length 15 mm 75 mm Kino rings, closed: Length Width length of piece 4 mm length of piece 4 mm Not limited Not limited Machining defects: Burn Chipping (including those in knots): Wi

32、dth Depth Nil 5 mm 1 mm Nil 5 mm 2 mm Nil 10 mm 2 mm Machine offset. Nil Nil Nil Skips a) Sum of lengths (parallel to grain) b) Width c) Depth Nil Nil Nil Nil Nil Nil 25 mm face width 0,5 mm Pith Nil Nil Not limited Resin infiltration (except in knots)+ a) Resin-impregnated wood b) Resinated wood Ni

33、l Nil Nil Nil 25 % of face area Not limited Splits . Nil Nil Nil Wane. Warp# Nil Nil Nil Nil Nil Nil a) Twist per 1 m length and pro rata for other lengths . b) Spring per 1 m length and pro rata for other lengths . c) Bow per 1 m length and pro rata for other lengths . d) Cup per 100 mm width and p

34、ro rata for other widths. 2 2 mm 5 mm 0,5 mm 2 2 mm 5 mm 0,5 mm 2 3 mm 5 mm 0,5 mm + Maximum of 25 % of the pieces in a consignment shall have maximum resin impregnation. # Except that in hardwoods of density exceeding 0,60 g/cm3only half of the value given for the respective grade shall be allowed.

35、 Amdt 2; amdt 3 SANS 1039:2008 Edition 1.3 7 3.2.2 Profile area The profile area of a board shall be free of loose knots, knot-holes, and chipped and broken areas that are visible on the matched face side or that cause an individual void of length exceeding 50 mm or voids whose sum of lengths in the

36、 worst 1 m length of board exceeds 150 mm. 3.2.3 Back The back of a board may have defects such as knots (including chipped, checked, or split knots, or any combination of these), knot-holes, checks, gum veins, machine skips, pith, and wane, provided that they a) do not extend beyond the profile are

37、a on the face-side, or (in the case of a board of which either of two faces may be used as the face-side) on either face; and b) will not affect the proper seating of the board. 3.3 Other defects A board shall be free from a) visible cross fracture and brittle heart (compression breaks); b) honeycom

38、bing; c) decay other than decay in knots; d) insect damage (except that damage caused by needle trace borers shall be allowed in knotty grade); and e) ring shake. 4 Physical requirements 4.1 Dimensions The dimensions of a board, measured in accordance with 7.3 and subject to the appropriate toleranc

39、es given in 4.2, shall be in accordance with the following, the dimension required being in each case as specified by the purchaser: a) Length 1) Plain ended boards. Any length that is not less than 0,9 m, and is a multiple of 0,30 m Amdt 2 2) End-matched boards i) Ceiling boards. Any length that is

40、 not less than 0,45 m ii) Panelling boards. Any length that is not less than 0,60 m b) Width of face. 50 mm, 65 mm, 75 mm, 102 mm, or 140 mm SANS 1039:2008 Edition 1.3 8 c) Thickness 1) Ceiling boards. 12 mm or 16 mm 2) Panelling boards. 12 mm, 16 mm, or 22 mm 4.2 Tolerances on dimensions The tolera

41、nces on dimensions shall be as follows: a) Length (plain ended boards). 500+mm b) Width of face. 2 mm, provided that the variation in a single board shall not exceed 0,5 mm c) Thickness. 0,5 mm 4.3 Profiles The profile of a board and the profile dimensions shall be as specified by the purchaser. Whe

42、re a profile with tongue and groove is specified, it shall be such as to give a tight sliding fit and a flush joint. NOTE Recommended profiles and dimensions are given in appendix C. 4.4 Finish The face-side, back, and edges of a board shall have a smooth and evenly planed or sanded finish. The face

43、-side or (in the case of a board of which either of two faces may be used as the face-side) the worse face shall have no pronounced cutter marks. Ends shall be end-matched (see 4.6) or fine square-sawn, as specified by the purchaser. 4.5 Squareness of ends When the out-of-squareness of a board havin

44、g plain sawn ends is measured in accordance with 7.3(f), the gap between the blade of the square and the end of the board shall not exceed 1 mm. End-matched boards shall be so squared that, when two boards are assembled with their edges properly aligned, there is no opening exceeding 0,5 mm between

45、the ends on the face-side. 4.6 End-matching Unless otherwise specified, all boards shall be end-matched. End-matching may be of the right-hand type (see 2.1). End-matched boards shall have a tongue on one end that corresponds to the tongue on one edge, and a groove on the other end that corresponds

46、to the groove on the other edge. Amdt 1 4.7 Moisture content 4.7.1 Boards of hardwood Unless otherwise specified by the purchaser, the moisture content of hardwood boards shall be as follows: a) in the case of boards intended for use in drier regions (see figure 1) within the range 7 to 11 % (m/m);

47、and SANS 1039:2008 Edition 1.3 9 b) in the case of boards intended for use in regions of higher moisture (see figure 1) within the range 12 to 15 % (m/m). 4.7.2 Boards of softwood The moisture content of softwood boards shall be as follows: a) In the case of boards of face width exceeding 75 mm, wit

48、hin the range 7 to 12 % (m/m); and b) in the case of boards of face width not exceeding 75 mm, within the range 7 to 15 % (m/m). NOTE It is recommended that the moisture content of softwood boards intended for use in very dry regions (see figure 1) shall be as specified by the purchaser. 4.8 Finger-

49、joints Finger-joints in boards shall be allowed provided that this has been agreed upon between supplier and purchaser and subject to the following provisions and exceptions: a) the profile shall comply with the requirements of SANS 10096 and the following: Amdt 1 1) the weakening ratio shall not exceed 0,25; 2) the clearance shall not exceed 0,5 mm; and 3) the requirements for knots in profile and joint area shall not apply; b) there shall be no broken or misaligned fingers on the face-side; and Amdt 1 c) the finger-joints shall have been glued and