《BS-873-6-1983.pdf》由会员分享,可在线阅读,更多相关《BS-873-6-1983.pdf(14页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD BS 873-6: 1983 Incorporating Amendment Nos. 1, 2 and 3 Road traffic signs and internally illuminated bollards Part 6: Specification for retroreflective and non-retroreflective signs UDC 625.745.5/.6:628.975:656.055.969 Licensed Copy: London South Bank University, London South Bank U
2、niversity, Fri Dec 08 06:09:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 873-6:1983 This British Standard, having been prepared under the direction of the Road Engineering Standards Committee, was published under the authority of the Board of BSI and comes into effect on 31 January 1983 BSI 12-1
3、998 The following BSI references relate to the work on this standard: Committee reference RDB/6 Draft for comment 78/12447 DC ISBN 0 580 13172 6 Cooperating organizations The Road Engineering Standards Committee, under whose direction this British Standard was prepared, consists of representatives f
4、rom the following: Asphalt and Coated Macadam AssociationGreater London Council Association of Consulting EngineersInstitute of Petroleum British Quarrying and Slag Federation*Institute of Quarrying British Tar Industry AssociationInstitution of Civil Engineers* Cement and Concrete AssociationInstit
5、ution of Highway Engineers* Concrete Society LimitedInstitution of Municipal Engineers* Contractors Plant AssociationInstitution of Structural Engineers Convention of Scottish Local AuthoritiesMinistry of Defence County Surveyors Society*Refined Bitumen Association Ltd. Department of the Environment
6、 (PSA)Road Emulsion Association Ltd. Department of the Environment (Transport Road Surface Dressing Association and Road Research Laboratory)Sand and Gravel Association Limited Department of Transport*Society of Chemical Industry Federation of Civil Engineering ContractorsTrades Union Congress Feder
7、ation of Manufacturers of Construction Equipment and Cranes The organizations marked with an asterisk in the above list, together with the following, were directly represented on the Technical Committee entrusted with the preparation of this British Standard: Aluminium FederationConfederation of Bri
8、tish Road Passenger Association of Public LightingTransport Association of Road Traffic Sign Makers Electricity Supply Industry in England and British Electrical and Allied Manufacturers Wales Association (BEAMA)Fibre Building Board Development British Plastics FederationOrganization Ltd. British Pr
9、ecast Concrete Federation Ltd.Lighting Industry Federation Ltd British Rubber Manufacturers AssociationPaint Research Association British Sign AssociationPost Office British Steel IndustryRetroreflective Equipment Manufacturers Chartered Institution of Building ServicesAssociation Vitreous Enamel De
10、velopment Council Coopted members Amendments issued since publication Amd. No.Date of issueComments 6140May 1989 6459October 1990 6658January 1991Indicated by a sideline in the margin Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 06:09:30 GMT+00:00 2006, Uncon
11、trolled Copy, (c) BSI BS 873-6:1983 BSI 12-1998i Contents Page Cooperating organizationsInside front Cover Forewordii 1Scope1 2Definitions1 3Marking and information1 4Materials1 5Preparation and finish6 6Mechanical properties and construction7 Figure 1 Chromaticity diagram4 Table 1 Class 1 material3
12、 Table 2 Class 2 material3 Table 3 Class 3 material4 Table 4 Chromaticity coordinates5 Table 5 Luminance factors5 Publications referred toInside back cover Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 06:09:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 873
13、-6:1983 ii BSI 12-1998 Foreword This Part of this British Standard has been prepared under the direction of the Road Engineering Standards Committee. BS 873 was first published in 1939 in response to a request from the Association of Road Traffic Sign Makers, and was revised in 1959 and 1970. As a r
14、esult of subsequent experience and the advent of new materials and methods of construction, it is being further revised to bring it up-to-date. This process will continue in future revisions. The revised standard is being published in the following separate Parts, relating to the various aspects of
15、road traffic signs and internally illuminated bollards which are considered to be suitable for standardization. Part 1: Methods of test; Part 2: Specification for miscellaneous traffic signs; Part 3: Specification for internally illuminated bollards; Part 4: Specification for road studs; Part 5: Spe
16、cification for internally illuminated signs and external lighting luminaires; Part 6: Specification for retroreflective and non-retroreflective signs; Part 7: Specification for posts and fittings. NOTEBS 873-1 gives further details of the various Parts. The committee reconsidered the need for requir
17、ements for resistance to abrasion and concluded that, while perhaps desirable, it was not practicable to establish suitable conditions of test bearing in mind the wide variety of finishes available within the specification. Experience had indicated there was no need for signs of greater strength and
18、 no fundamental changes were thought necessary as regards thickness of sheet sign plate materials. Some of the tests specified in this standard are such as to necessitate a programme of sampling. Such a procedure should be agreed between the purchaser and manufacturer at the time of ordering. Attent
19、ion is drawn to BS 2635, BS 6000, BS 6001 and BS 6002. 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 not of itself confer immunity from legal
20、 obligations. In particular, attention is drawn to the following: The Traffic Signs Regulations and General Directions The Traffic Signs (Speed Limits) Regulations and General Directions The Pedestrian Crossing Regulations Information on the relationship between these Regulations and BS 873 is given
21、 in appendix A of BS 873-1:1983. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in
22、 the amendment table on the inside front cover. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 06:09:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 873-6:1983 BSI 12-19981 1 Scope This Part of BS 873 specifies requirements for the construction, preparation an
23、d finish of sign plates, frames and fittings. it also specifies the photometric, colorimetric and performance requirements of retroreflective and non-retroreflective sign face materials for use in the manufacture of permanent and temporary road traffic signs. The various components and materials to
24、be used in the construction of the signs are specified. While this standard specifies requirements for resistance to twisting of the mounting arrangements between the sign and its support, it does not specify the requirements for such supports. When these take the form of posts, the requirements of
25、BS 873-7 apply. The criteria embodied in this standard will not necessarily ensure adequate performance or suitability of the material for purposes of devices other than road traffic signs, delineators and street furniture. NOTEThe titles of the publications referred to in this standard are listed o
26、n the inside back cover. 2 Definitions For the purposes of this Part of BS 873 the definitions in BS 873-1 apply. 3 Marking and information 3.1 Complete signs 3.1.1 Marking. Finished sign plates (with sign face attached) shall be clearly and durably marked, on the back, with the following informatio
27、n: a) the number of this British Standard, i.e. BS 873-61); b) the name, trade mark or other means of identification of the manufacturer or vendor; c) the classification of any retroreflective material used in the manufacture of the sign face (see 4.3.2); d) the month and year of assembly. These mar
28、kings shall be in characters legible at a normal reading distance such that the total area of the marking does not exceed 30 cm2 and shall be sufficiently durable to last the expected life of the sign plate to which it is applied. 3.1.2 Information. The manufacturer or vendor shall make available th
29、e following information: a) instructions on the assembly and erection of the sign; b) details of any limitations in location or usage; c) instructions on the operation and maintenance of the sign. 3.2 Components of signs 3.2.1 Marking. Where the component complies with a British Standard the marking
30、 shall be that specified in that standard. 3.2.2 Information. The manufacturer or vendor shall make available the following information: a) where the component is not covered by and/or does not comply with a British Standard, a detailed technical specification of the component; b) instructions on th
31、e application of the component; c) details of any limitations in location or usage, including any potential incompatibility with other materials; d) instructions on the operation and maintenance of the component. 4 Materials 4.1 General. Materials and finishes shall be compatible so as to avoid fail
32、ure or deterioration due to electrolytic action or by differential thermal expansion. NOTE 1See BS 5493 and PD 6484 for further information. Sign plates and frames and fittings shall be finished as specified in clause 5. NOTE 2Certain limitations with regard to the selection of materials may apply a
33、s a result of the choice of surface finish. 4.2 Sign plates 4.2.1 General. Sign plates shall be constructed from one or more of the following materials: a) sheet steel or strip of minimum thickness 1.25 mm and complying with BS 1449, BS 2989 or BS 3830; b) sheet aluminium and sheet aluminium alloy c
34、omplying with grades SIC-H4, HS30-TF, NS3-H6 or NS4-H6 of BS 1470 of minimum thickness 3.0 mm for unstiffened signs and 2.0 mm for stiffened signs; 1) Marking BS 873-6 on or in relation to a product is a claim by the manufacturer that the product has been manufactured to the requirements of the stan
35、dard. The accuracy of such a claim is therefore solely the manufacturers responsibility. Enquiries as to the availability of third party certification to support such claims should be addressed to the Director, Quality Assurance Division, British Standards Institution, Maylands Avenue, Hemel Hempste
36、ad, Herts HP2 4SQ for certification marks administered by BSI or to the appropriate authority for other certification marks. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 06:09:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 873-6:1983 2 BSI 12-1998 c) extrud
37、ed aluminium and extruded plank sections complying with grades HE9-TF, HE9-TE or HE30-TF of BS 1474; d) cast aluminium or aluminium alloy complying with grades LM 6-M, LM 25-M or LM 27-M of BS 1490; e) plastics or reinforced plastics complying with 4.2.2; f) other materials complying with 4.2.2. 4.2
38、.2 Plastics or other materials 4.2.2.1 When tested under conditions of either: a) continuous natural exposure for 2 years; or b) accelerated weathering for 1 200 h; using the procedure described in clause 15 of BS 873-1:1983, samples of the material shall show no sign of deterioration such as cracki
39、ng, scaling, pitting, blistering, delamination, distortion, staining or chalking. Where specified, the colours of the samples shall remain within the limits of Table 4. 4.2.2.2 When subjected to the action of a saline mist as described in clause 13 of BS 873-1:1983 there shall be no sign of deterior
40、ation, corrosion or evidence of colour change. 4.2.2.3 When subjected to the action of sulphur dioxide as described in clause 14 of BS 873-1:1983 there shall be no sign of deterioration, corrosion or evidence of colour change. 4.2.2.4 When subjected to the impact test specified in clause 7 of BS 873
41、-1:1983, the sample shall not be deformed at any point by more than 2 mm from the plane surface and any cracking or other damage shall be confined within a circle of 5 mm radius around the point of impact of the steel ball. 4.3 Sign faces 4.3.1 General. Retroreflective and non-retroreflective sign f
42、ace sheet material, sign face material, edge sealant, clear coat laquers and silk screen inks used shall be mutually compatible. 4.3.2 Classification. Retroreflective materials shall be classified as 1, 2 or 3 according to the minimum coefficient of retroreflection as given in Table 1, Table 2 and T
43、able 3. 4.3.3 Colorimetric performance. The chromaticity of the required colour of the sign face sheet material, sign face material or finish shall comply with Table 4 when measured as described in clause 6 of BS 873- 1:1983. NOTE 1Figure 1 illustrates the colorimetric requirements as a chromaticity
44、 diagram and is based on Table 4 which gives the coordinates for the four corners for each of the areas of colour. NOTE 2For comparative purposes the following gloss paint colours specified in BS 381C:1980 will satisfy the requirements of Table 4. Green (1) is the background colour used for primary
45、route signs in the UK. Green (2) is used for the green parts of other signs. 4.3.4 Photometric performance 4.3.4.1 Luminance factor. The luminance factor of the sign face sheet material, sign face material or finish shall comply with Table 5 when measured as described in clause 6 of BS 873-1:1983. 4
46、.3.4.2 Coefficient of retroreflection. The minimum coefficient of retroreflection, R, of retroreflective sign face sheet materials, or sign face materials shall be as given in Table 1, Table 2 or Table 3 according to the class of material. Measurements shall be carried out as described in clause 5 o
47、f BS 873-1:1983. The maximum coefficient of retroreflection for any class of material shall not exceed 1 000 cd/(lx/m2). 4.3.5 Impact resistance. A mounted test sample of the sign face sheet material or sign face material shall be subjected to the test described in clause 7 of BS 873-1:1983. Upon co
48、mpletion of the test there shall be no apparent change in the optical properties of the sample or cracking or other damage to the surface outside a circle with the point of impact as centre and with a radius equal to 6.0 mm. 4.3.6 Bond between sign face sheet material and the sign plate. Where sign
49、face sheet materials are laminated to rigid background materials the adhesion shall be determined as described in clause 10 of BS 873-1:1983. When tested by this method the force required to produce failure shall not be less than 440 N. Where superimposed solid glass beads are directly fixed to a rigid substrate the adhesion shall be determined as described in clause 11 of BS 873-1:1983. On completion of the test the coefficient of retroreflection value of each specimen shall be measured at an entrance angle of 5 and an observation angle of 20. The
链接地址:https://www.31doc.com/p-3736722.html