1、BRITISH STANDARD BS 4050:1966 Incorporating Amendment Nos.1 and 2 Mosaic parquet panels Part 2: Classification and quality requirementsBS4050:1966 This British Standard, having been approved by the TimberIndustry Standards Committee and endorsed by the Chairman of the Building Divisional Council, wa
2、s publishedunder the authority ofthe General Council on 15July 1966 BSI 03-2000 The following BSI references relate to the work on this standard: Committee reference TIB/18 Draft for comment D65/4580 ISBN 0 580 34768 0 Co-operating organizations The Timber Industry Standards Committee, under whose s
3、upervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: British Door Association British Furniture Trade Confederation British Plastics Federation British Woodwork Manufacturers Association Fibr
4、e Building Board Development Organization Limited Forestry Commission Hardwood Flooring Manufacturers Association* Institute of Wood Science Institution of Civil Engineers Institution of Municipal Engineers Institution of Structural Engineers Ministry of Public Building and Works Ministry of Technol
5、ogy Forest Products Research Laboratory* National Federation of Building Trades Employers National Sawmilling Association Royal Institute of British Architects* Royal Institution of Chartered Surveyors Softwood Agents these will be covered in a separate International Standard for oak panels, which i
6、s at present in draft form. Because of these changes it has been decided to amend BS4050:1966, redesignated as BS 4050-2, to cover quality requirements and classification only, and to publish a Part 1 identical with ISO 631. It is intended that BS 4050-2 will be replaced by the International Standar
7、d for quality requirements and classification of oak panels as soon as the latter is published. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does
8、 not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages1 and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. Thi
9、s will be indicated in the amendment table on the inside front cover.BS4050:1966 BSI 03-2000 1 1 Scope This British Standard specifies requirements for wood mosaic flooring made from fingers of any species of wood in patterns to form squares, or other designs, intended to be bonded to a supporting b
10、ase, either directly or over an interlayer, by means of pre-fabricated panels or individual fingers. 2 Definitions For the purposes of this British Standard the definitions given in BS 565 1)apply, with the addition of the following: mosaic finger small solid wood component of regular form with plan
11、ed or finely sawn faces and edges abnormal coloration coloration which is different from the normal average coloration of the sound wood of a given species black knots adherent knots of a colour in distinct contrast with that of the surrounding wood 3 Wood a) General requirements. The wood used shal
12、l be sound and free from any decay or damage caused by insects which may adversely affect the wearing properties of the wood. Knot holes are not admissible. The face sides of mosaic fingers shall be free of ring shakes, which are admissible only on the backs provided that they are sound and do not p
13、enetrate within 5 mm (0.2 in) of the face. Any preservative treatment of sapwood against damage by insects shall be the subject of special agreement between the purchaser and the supplier and any treatment applied shall not affect either the appearance or the bonding characteristics of the wood. b)
14、Quality. i) First quality (I). B) Wearing surface. The wearing surface shall be free from sapwood, decay, seasoning checks, veins, pockets, abnormal coloration and knots, other than pin knots or black knots with a diameter not exceeding 2 mm (0.08 in). Not more than 5 per cent of the mosaic fingers
15、may contain pin or black knots. ii) Second quality (II). B) Wearing surface. The wearing surface shall be free from decay and from seasoning checks, veins, pockets, black knots and sound knots in excess of the limits shown in Table 1. Not more than one of these defects may be present in any mosaic f
16、inger. Table 1 Deleted 4 Deleted Table 2 Deleted 5 Deleted 6 Deleted 7 Deleted 1) BS 565, “Glossary of terms relating to timber and woodwork”.BS4050:1966 2 BSI 03-2000 Appendix A Deleted Figure 1 Deleted Figure 2 DeletedBS4050:1966 BSI 03-2000 British Standards The following are available on applica
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20、uipment Petroleum industry Plastics Printing, paper and stationery Road engineering Rubber Shipbuilding Textiles and clothing WeldingBS 4050:1966 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. I
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