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1、BRITISH STANDARD BS 873-7:1984 Incorporating Amendment No. 1 Road traffic signs and internally illuminated bollards Part 7: Specification for posts and fittings UDC 625.745.5/.6:628.975:656.055.969 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 06:11:28 GMT+00:
2、00 2006, Uncontrolled Copy, (c) BSI BS 873-7:1984 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 July 1984 BSI 01-1999 First published September 1939 First
3、revision February 1959 Second revision December 1970 Third revision July 1984 The following BSI references relate to the work on this standard: Committee reference RDB/6 Draft for comment 81/13567 DC ISBN 0 580 13813 5 Committees responsible for this British Standard The preparation of this British
4、Standard was entrusted by the Road Engineering Standards Committee (RDB/-) to Technical Committee RDB/6 upon which the following bodies were represented: Aluminium Federation Association of Road Traffic Sign Makers BEAMA Ltd. British Plastics Federation British Precast Concrete Federation Ltd. Briti
5、sh Rubber Manufacturers Association British Sign Association British Steel industry British Telecommunications Bus and Coach Council Chartered Institution of Building Services County Surveyors Society Department of Transport Electricity Supply Industry in England and Wales Institution of Civil Engin
6、eers Institution of Highways and Transportation Institution of Municipal Engineers Institution of Public Lighting Engineers Lighting Industry Federation Ltd. Paint Research Association Retro-reflective Equipment Manufacturers Association Vitreous Enamel Development Council Zinc Development Associati
7、on Coopted members Amendments issued since publication Amd. No.Date of issueComments 6588November 1990 Indicated by a sideline in the margin Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 06:11:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 873-7:1984 BSI 01-
8、1999i Contents Page Committees responsibleInside front cover Forewordii Section 1. General 1Scope1 2Definitions1 3Marking1 Section 2. Non-illuminated posts 4General1 5Materials for non-illuminated posts1 6Dimensions and construction of non-illuminated posts2 Section 3. Internally illuminated posts 7
9、General3 8Materials for internally illuminated posts3 9Dimensions and construction of internally illuminated posts3 10Colorimetric performance3 11Photometric performance4 12Electrical requirements4 Section 4. Fittings 13Materials for fittings4 14Construction of fittings5 Appendix A Foundations and g
10、eneral erection recommendations6 Appendix B Method for determination of the strength of internally illuminated posts6 Appendix C Method for the determination of the photometric performance of internally illuminated posts6 Publications referred to8 Licensed Copy: London South Bank University, London
11、South Bank University, Fri Dec 08 06:11:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 873-7:1984 ii BSI 01-1999 Foreword This revision of this Part of BS 873 has been prepared under the direction of the Road Engineering Standards Committee. It supersedes BS 873-7:1970 which is withdrawn. BS 873 w
12、as 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 result 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 w
13、ill continue in future revisions. The revised standard is being published in the following separate Parts, relating to the various aspects of road traffic signs and internally illuminated bollards which are considered to be suitable for standardization. Part 1: Methods of test; Part 2: Specification
14、 for miscellaneous signs; Part 3: Specification for internally illuminated bollards; Part 4: Specification for road studs; Part 5: Specification for internally illuminated signs and external lighting luminaires; Part 6: Specification for retroreflective and non-retroreflective signs; Part 7: Specifi
15、cation for posts and fittings; Part 81): Specification for cones and cylinders. NOTEBS 873-1 gives further details of the various Parts. This standard is currently limited to specifying requirements for steel, aluminium and concrete non-illuminated posts, internally illuminated posts and fittings. I
16、f materials other than those specified are shown to be suitable they will be included by amendment. No specific requirements are given for frangible posts but this standard specifies basic requirements which are applicable. The committee reconsidered the need for requirements for resistance to abras
17、ion 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 standard. Experience had indicated there was no need for signs of greater strength and no fundamental changes were though
18、t necessary as regards thickness of sheet sign plate materials. Some of the tests described in this standard are such as to necessitate a programme of sampling. Such a procedure should be agreed between the purchaser and the manufacturer at the time of ordering. Attention is drawn to BS 2635, BS 600
19、0, BS 6001 and BS 6002. 1) In course of preparation Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 06:11:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 873-7:1984 BSI 01-1999iii A British Standard does not purport to include all the necessary provisions of a
20、contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. In particular, attention is drawn to the following: The Traffic Signs Regulations and General Directions The Traffic Signs
21、 (Speed Limits) Regulations and General Directions The Pedestrian Crossing Regulations Information on the relationship between these Regulations and BS 873 is given in appendix A of BS 873-1:1983. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pages 1 t
22、o 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 the amendment table on the inside front cover. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 06:
23、11:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 06:11:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 873-7:1984 BSI 01-19991 Section 1. General 1 Scope This Part of BS 873 specifies requirements for mat
24、erials, dimensions and construction for posts, including internally illuminated posts, for all types of road traffic signs, but excludes plates and plate frames. It also specifies colorimetric, photometric and electrical requirements for internally illuminated posts, and material and constructional
25、requirements for the fittings used to attach a sign to a post or to other forms of support. These are complementary to the requirements for fittings specified in BS 873-6. Some guidance on foundations and other installation details is given in appendix A and methods for the determination of strength
26、 and photometric performance of internally illuminated posts are given in appendices B and C. This standard does not include specific requirements for frangible posts or mountings. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Definitions For
27、the purposes of this Part of BS 873 the definitions given in BS 5649-1 apply, together with the following. 2.1 base board a board within a base housing or root box to which the electrical equipment is attached 2.2 base housing that portion of a post specially adapted to accommodate electrical equipm
28、ent 2.3 root box a separate container attached to the base of a post to accommodate electrical equipment 3 Marking Posts shall be clearly and durably marked with the following information: a) the number and date of this British Standard, i.e. BS 873-7:19842) b) the name, trade mark or other means of
29、 identification of the manufacturer or vendor. When checked by inspection and by rubbing lightly, first for 15 s with a piece of cloth soaked with water, and then for 15 s with a piece of cloth soaked with petroleum spirit, the marking shall remain legible and adhesive labels, where used, shall not
30、have worked loose or become curled at the edges. Section 2. Non-illuminated posts 4 General A non-illuminated post shall consist of a tube or section to which either a base housing or root box may be attached. Where additional stability is required the post shall be provided with either a baseplate
31、or a flange plate. 5 Materials for non-illuminated posts 5.1 General. Materials and finishes shall be compatible so as to avoid failure or deterioration due to electrolytic action or by differential thermal expansion. Alloys containing copper shall not be used in contact with aluminium alloys. NOTES
32、ee BS 5493 and PD 6484 for further information on protection against corrosion. Metal surfaces, including base housings, shall be protected against corrosion as specified in BS 873-6. Additional protection shall be applied, as appropriate, in one of the following ways. a) Aluminium posts and posts p
33、rotected by hot dipped galvanizing shall have a coating of bituminous paint complying with BS 3416 on the internal and external surfaces of the underground section including a length extending to 0.15 m above ground level. b) Posts externally protected by plastics shall have a coating of bituminous
34、paint complying with BS 3416 on the internal surface. c) Posts externally protected other than by a) or b) shall have a coating of bituminous paint complying with BS 3416 on: 1) the interior surface; 2) the exterior of the underground section including a length extending to 0.15 m above ground level
35、. 2) Marking BS 873-7:1984 on or in relation to a product is a claim by the manufacturer that the product has been manufactured to the requirements of the standard. The accuracy of such a claim is therefore solely the manufacturers responsibility. Enquiries as to the availability of third party cert
36、ification to support such claims should be addressed to the Director, Quality Assurance Division, BSI, Maylands Avenue, Hemel Hempstead, Herts HP2 4SQ for certification marks administered by BSI or to the appropriate authority for other certification marks. Licensed Copy: London South Bank Universit
37、y, London South Bank University, Fri Dec 08 06:11:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 873-7:1984 2 BSI 01-1999 5.2 Posts. Posts shall be manufactured from one of the following materials: a) steel in the form of structural hollow sections complying with BS 4848-2 and rolled steel joists
38、complying with BS 4-1 or complying with grade 43C of BS 4360; b) aluminium in the form of drawn tubes complying with grades 6063-TF or 6082-TF of BS 1471, or bars or extruded tubes or sections complying with grades 6063-TF or 6082-TF of BS 1474; c) reinforced or prestressed concrete. 5.3 Compartment
39、s for electrical equipment. Base housings shall be constructed from the materials specified in 5.2. Root boxes shall be constructed of either: a) steel, of minimum thickness 2 mm, complying with BS 1449, BS 2989 or grade 40A of BS 4360, finished as specified in BS 873-6; or b) sheet aluminium comply
40、ing with grade 1200-H4, 6082-TF, 3103-H6 or 5251-H6 of BS 1470 of minimum thickness 3 mm: or cast aluminium complying with BS 1490, of minimum thickness 3 mm and grades LM 6-M, LM 25-M, or LM 27-M, finished as specified in BS 873-6. 5.4 Post caps and base plates. Post caps shall be manufactured from
41、 steel, aluminium or plastics. Steel post caps shall be finished as specified in BS 873-6. Post caps shall be the same colour as the posts. Steel base plates or flange plates shall be finished as specified in BS 873-6. 6 Dimensions and construction of non-illuminated posts 6.1 Posts NOTEThe design o
42、f a post is dependent upon where it is located and the size and position of the signs and any external lighting luminaires, and this needs to be taken into account when applying the following requirements. The length of a post is affected by the required height of the sign which is defined in statut
43、ory requirements (see appendix A of BS 873-1:1983). 6.1.1 Metal posts. Metal posts shall be designed in accordance with BS 449 or CP 118, as appropriate. The form of the post shall be such that, when held rigidly at the designated ground level and with the designated size of sign attached in a manne
44、r representative of normal use, both of the following conditions are satisfied. a) The horizontal deflection measured at the centre of the sign shall not exceed 1/40th of the distance from the centre of the sign to the ground when either the face or the rear of the sign assembly is subjected to a un
45、iform pressure of 1 kPa 2.5 %. b) The maximum stress in the post when either the face or the rear of the sign assembly is subjected to a uniform pressure of 1.5 kPa 2.5 % shall not exceed the permissible value given in BS 449 for steel and CP 118 for aluminium. All open ended posts shall be provided
46、 with post caps. Post caps shall be shaped to shed water to the outside of the post and shall be provided with a means for securing the post cap to the post. NOTEA friction fit is sufficient provided it is not adversely affected by thermal movements or other conditions likely to be encountered in no
47、rmal use. 6.1.2 Concrete posts. Concrete posts shall be designed in accordance with CP 110-1 or CP 116 so that, when held rigidly at the designated ground level and with the designated size of sign attached in a manner representative of normal use, they shall support both of the following loads: a)
48、the loads due to the weight of the bracket support arms and any fittings attached thereto; b) uniformly distributed pressure on the posts, the bracket support arms, the sign assembly and any associated equipment attached thereto of 1.5 kPa 2.5 %. NOTETo ensure adequate durability the design should b
49、e based on the recommendations for moderate exposure given in CP 110-1, or the equivalent in CP 116. The finish shall be type “F” of CP 116 or the equivalent from CP 110-1. 6.1.3 Baseplates. Where a baseplate is provided it shall have an area of not less than five times the plan area of the post or, if there is a base housing, 2.5 times the plan area of the base housing. The shape shall be such as will prevent the post rotating. Means shall be provided for securing the baseplate to the post or base housing. 6.2 Compartments for electrical equipment 6.2.1
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