SOUTH AFRICAN NATIONAL STANDARD

Transcription

1 ISBN SOUTH AFRICAN NATIONAL STANDARD School furniture Amdt 6 Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: Fax: SABS

2 Table of changes Change No. Date Scope Amdt Amended to replace the definition of ʺacceptableʺ, and to update normative references. Amdt Amended to delete reference to SANS 166 and to replace it with reference to SANS 7253, to delete reference to SANS 679, and to update other referenced standards. Amdt Amended to update referenced standards and to indicate preferred dimensions of chairs for general use. Amdt Amended to update referenced standards, to change the requirements for the colour stability test method, and to remove reference to the standardization mark. Amdt Amended to update referenced standards to delete the reference to the colour coding identification mark, and to reinstate a referenced standard. Amdt Amended to change the title, amended to include reference to a national department in the foreword, to update referenced standards, and to add an appendix on classroom furniture. Amdt Amended to modify a definition, to expand the types of desks covered, to update requirements in the appendix on classroom furniture, to integrate references to these updated requirements into the text, and to update referenced standards. Foreword This South African standard was approved by National Committee SABS/TC 136, Furniture, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This document was approved for publication in December This document supersedes SANS 660:2013 (edition 3.6). A vertical line in the margin shows where the text has been technically modified by amendment No. 7. Reference is made in D.2 to the "relevant national department". In South Africa, this means the Forestry Stewardship Council. Amdt 6

3 Contents Page Foreword 1 Scope Definitions Type, dimensions, size, design and colour Materials Construction Finish Specific requirements for tables Specific requirements for teachers' desks Specific requirements for chairs and stools Marking Inspection and methods of test Inspection Sequence of tests Impact resistance test for desk and table tops Static load resistance test for single tables Static load resistance test for dual and drawing tables Deflection resistance test for table tops Securing test for desk and table tops Drawer load test Backward tipping test for chairs and stools Impact resistance test for chair and stool seats Flexing resistance test for thermoplastics shells Dry film thickness test for paint Scratch resistance test for paint Corrosion resistance test for paint Colour test for paint Specular reflection test for paint, timber coatings and decorative laminates Tensile strength test Test for moisture content of solid timber Impact resistance test for thermoplastics Stress resistance test for thermoplastics Test for freedom of thermoplastics from unplasticized raw materials and voids Test for tensile strength and elongation at break of thermoplastics Test for colour stability of thermoplastics shells and table tops Adhesion test for zinc and cadmium Adhesion test for nickel and chromium

4 Contents (concluded) Figures Appendix A Applicable standards Appendix B Notes to purchasers Appendix C Quality evaluation of classroom furniture produced to the requirements laid down in the specification Page Appendix D Classroom furniture Amdt 6 Bibliography

5 School furniture Amdt 6 1 Scope This specification covers the requirements for the materials, construction, finish and performance of tables, teachers' desks, chairs and stools for use in classrooms. NOTE a) The standards referred to in the specification are listed in appendix A. b) Requirements that must be specified by the purchaser are listed in appendix B. c) Guidance on the verification of the quality of classroom furniture produced to this specification is given in appendix C. d) The requirements for the dimensions of classroom furniture produced to this specification are given in appendix D. Amdt 6 2 Definitions For the purposes of this specification, the following definitions shall apply: 2.1 acceptable acceptable to the authority administering this standard, or to the parties concluding the purchase contract, as relevant Amdt dual table table normally used by two or more pupils 2.3 effective centre of seat (of a chair) intersection of the diagonals of that part of the upper surface of a seat that is bounded by the sides and front of the seat and by the line parallel to the front at the effective depth of the seat 2.4 effective depth of seat (of a chair) distance between the centre of the front edge of a seat and the point of intersection of the seat and the extended centre line of the front surface of the backrest 3