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1、BRITISH STANDARD BS 1722-11: 1986 Fences Part 11: Specification for woven wood and lap boarded panel fences UDC 692.88 + 674.26 + 677.533 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:21:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1722-11:1986 This British Standard, having been prep
2、ared 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 October 1986 BSI 07-1999 First published November 1965 First revision October 1972 Second revision October 1986 The following BSI references relate t
3、o the work on this standard: Committee reference RDB/34 Draft for comment 83/12387 DC ISBN 0 580 15105 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Road Engineering Standards Committee (RDB/-) to Technical Committee RDB/34 upon whic
4、h the following bodies were represented: British Independent Steel Producers Association British Precast Concrete Federation Ltd. British Steel Industry (Wire Section) British Timber Merchants Association British Wire Netting Association British Wood Preserving Association Cement and Concrete Associ
5、ation Concrete Society Country Landowners Association Department of Agriculture and Fisheries for Scotland Department of the Environment (Property Services Agency) Department of the Environment (Building Research Establishment, Princes Risborough Laboratory) Department of Transport (Highways) Fencin
6、g Contractors Association Forestry Commission Home Timber Merchants Association of Scotland Institute of Clerks of Works of Great Britain Inc. Institute of Leisure and Amenity Management Institution of Civil Engineers Landscape Institute Ministry of Agriculture, Fisheries and Food National Council o
7、f Building Materials Producers National Farmers Union Royal Institution of Chartered Surveyors Society of Chain Link Fencing Manufacturers Society of Chestnut Fencing Manufacturers Timber Growers United Kingdom Timber Research and Development Association Timber Trade Federation Wire Products Associa
8、tion The following bodies were also represented in the drafting of the standard, through sub-committees and panels: Consumer Standards Advisory Committee of BSI County Surveyors Society Fencing Industry Association Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: shef
9、fieldun sheffieldun, na, Fri Nov 24 08:21:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1722-11:1986 BSI 07-1999i Contents Page Committees responsibleInside front cover Forewordii Section 1. General 1.1Scope1 1.2Definitions1 1.3Dimensions and general characteristics1 Section 2. Materials 2.1Concr
10、ete components5 2.2Timber components5 2.3Bolts, nails and staples8 2.4Concrete surrounding bases of posts8 Section 3. Erection 3.1Level9 3.2Posts9 3.3Infill9 Appendix A Concrete components10 Appendix B Timber components11 Appendix C Specifying a wood panel fence14 Figure 1 General characteristics of
11、 a panel fence2 Figure 2 Measurement of knot size13 Figure 3 Measurement of wane13 Figure 4 Measurement of slope of grain14 Figure 5 Measurement of checks and end splits15 Figure 6 Measurement of bow, spring, twist and cup16 Table 1 General characteristics of panels and posts1 Table 2 Dimensions of
12、components in panels6 Table 3 Characteristics and defects of softwoods and hardwoods12 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:21:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1722-11:1986 ii BSI 07-1999 Foreword This British Standard ha
13、s been prepared under the direction of the Road Engineering Standards Committee. It is a revision of BS 1722-11:1972, which is withdrawn, and now describes requirements for woven wood panels and three forms of overlapped board panels. BS 1722 is published in separate Parts as follows: Part 1: Specif
14、ication for chain link fences; Part 2: Specification for rectangular wire mesh and hexagonal wire netting fences; Part 3: Specification for strained wire fences; Part 4: Specification for cleft chestnut pale fences; Part 5: Specification for close-boarded fences; Part 6: Specification for wooden pal
15、isade fences; Part 7: Specification for wooden post and rail fences; Part 8: Specification for mild steel (low carbon steel) continuous bar fences; Part 9: Specification for mild steel (low carbon steel) fences with round or square verticals and flat posts and horizontals; Part 10: Specification for
16、 anti-intruder fences in chain link and welded mesh; Part 11: Specification for woven wood and lap boarded panel fences; Part 12: Specification for steel palisade fences; Part 13: Specification for wire mesh fencing for tennis court surrounds. The various Parts specify requirements for the types of
17、fence that are considered suitable for standardization. It should be noted that no attempt has been made to standardize fences of a purely decorative nature, or to suit special requirements, or to specify requirements for “patent” proprietary fencing systems. It is recommended that the structure of
18、such fences should comply with those parts of this Part of BS 1722 that are applicable. It has been assumed in the drafting of this British Standard that the execution of its provisions is entrusted to appropriately qualified and experienced people. The purpose of this standard is to establish minim
19、um requirements for materials and workmanship for the more common types of fence in order to ensure satisfactory service for the purchaser, and to assist manufacturers and erecting contractors by eliminating unnecessary minor variations in the demands of purchasers. It specifies requirements for the
20、 components which make up a fence and the way in which the fence needs to be constructed. Section 2 will be most important to component manufacturers while sections 1 and 3 are important to those specifying and erecting a fence. Throughout this standard there are requirements for sizes of components
21、, together with the permissible tolerances on size. These are minimum requirements and it will normally be acceptable to use larger sizes, except where it would otherwise adversely affect the fit of components or where replacement parts need to match up with those already present. The choice of a fe
22、nce is affected by factors such as the intended purpose of the fence, the desired service life, aesthetic considerations and the availability of components. The specifier of the fence will know its intended purpose and by reference to Table 1 a suitable choice can be made. This then gives those erec
23、ting the fence the basic characteristics that need to be provided. This standard includes requirements for protective treatments. However, an important aspect of providing an extended service life is the maintenance of the fence after its erection; this is outside the scope of this standard. Prematu
24、re failure can be avoided by taking care not to damage protective treatments during installation. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:21:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1722-11:1986 BSI 07-1999iii Ground conditions may indicate that a variation in the length of
25、 a post, or of the depth to which it should be set, is desirable. The posts and setting depths specified in this standard are intended for use in normal ground but if special conditions exist that warrant a change in the specification, e.g. ground that is softer or firmer than usual, such a change n
26、eeds to be agreed with the specifier, as for other variations. To assist those specifying and/or providing a fence, Appendix C provides guidance on the more important details, which often take the form of selected options, that need to be specified at the time of ordering a fence. This is a new feat
27、ure of the standard. This revision has retained the method of allocating a reference code to each type of fence indicating its height and the material used for the panels. These type references are given in full in Table 1. The first two letters indicate the type of infill. The third letter indicate
28、s the material of the post, and the numbers give an indication of the height of the fence. Where appropriate a fourth letter indicates whether boards are square cut or feather edged, e.g. VLC 150F1) indicates a 1.5 m high fence of vertical overlapped feather edged board panels on concrete posts. For
29、 the sake of uniformity the quoted heights are those of the main infill material and exclude any ground clearance at the base or the additional height provided by, for instance, any barbed wire or trellis. Designations of bolt size are in accordance with BS 4190. The proof test for concrete posts ha
30、s been deleted as experience has shown that there were technical problems associated with the application and interpretation of the test. Cube tests of concrete strength are now required and the frequency of testing is specified to ensure that regular quality checks are made. Since the publication o
31、f the previous edition of this standard BS 5589 has been published, and the timber appendix in this standard has been revised to include the recommendations of BS 5589. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsib
32、le for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 16, an inside back cover and a back cover. This standard has been u
33、pdated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. 1) It should be noted that this coding does not differentiate between rectangular and slotted concrete posts. Licensed Copy: sheffieldun sheffieldun, na, Fri
34、 Nov 24 08:21:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:21:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1722-11:1986 BSI 07-19991 Section 1. General 1.1 Scope This Part of BS 1722 specifies requirements for woven wood and lap
35、 boarded panel fences constructed from softwood panels fixed between timber or concrete posts. This standard is divided into sections that specify separate requirements for the material components for fences (see Section 2) and the erection of the fences (see Section 3). NOTEThe titles of the public
36、ations referred to in this standard are listed on the inside back cover. 1.2 Definitions For the purposes of this Part of BS 1722, the timber definitions given in BS 6100-4.1 apply. NOTEFor convenience, the relevant definitions have been repeated in B.2. 1.3 Dimensions and general characteristics Th
37、e dimensions of woven wood and lap boarded panel fences shall be as given in Table 1. NOTEFigure 1 illustrates the general characteristics of panel fencing. It is not intended to illustrate any particular requirements of this Part of the standard but provides guidance as to the general layout of a t
38、ypical fence, and on the terminology associated with this form of fencing. Table 1 General characteristics of panels and posts Woven woodOverlapped boardHeight Length of postsb Maximum length (all panels) HorizontalaHorizontal waneyVerticala With concrete posts With wood posts With concrete posts Wi
39、th wood posts With concrete posts With wood posts With concrete posts With wood posts WWC 60 WWC 90 WWC 120 WWC 150 WWC 180 WWW 60 WWW 90 WWW 120 WWW 150 WWW 180 HLC 60 HLC 90 HLC 120 HLC 150 HLC 180 HLW 60 HLW 90 HLW 120 HLW 150 HLW 180 HWC 60 HWC 90 HWC 120 HWC 150 HWC 180 HWW 60 HWW 90 HWW 120 HW
40、W 150 HWW 180 VLC 60 VLC 90 VLC 120 VLC 150 VLC 180 VLW 60 VLW 90 VLW 120 VLW 150 VLW 180 m 0.6 0.9 1.2 1.5 1.8 m 1.2 1.5 1.8 2.1 2.4 m 1.83 NOTEThe above codes do not differentiate between rectangular and slotted concrete posts, which will need to be separately indicated. a The letter S or F should
41、 be added to indicate whether square cut or feather edged boards, respectively are required if this is of importance, e.g. HLC 120S, VLW 150F, etc. b Excluding any weathered top or post cap. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:21:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS
42、 1722-11:1986 2 BSI 07-1999 (a) Woven wood panel Figure 1 General characteristics of a panel fence Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:21:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1722-11:1986 BSI 07-19993 NOTEThis figure shows a panel with boards with one waney edge. (b
43、) Overlapping horizontal board panel Figure 1 General characteristics of a panel fence (continued) Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:21:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1722-11:1986 4 BSI 07-1999 (c) Overlapping vertical board panel Figure 1 General characteri
44、stics of a panel fence (concluded) Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 24 08:21:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 1722-11:1986 BSI 07-19995 Section 2. Materials 2.1 Concrete components 2.1.1 General 2.1.1.1 Material. Concrete components shall be of steel reinforced con
45、crete complying with Appendix A, except that for slotted posts it shall be permissible for the minimum cover of concrete specified in A.3.4 to be reduced to allow for the provision of slots. 2.1.1.2 Tolerances on size. The following permissible deviations shall apply to the specified size of concret
46、e components when determining the actual sizes. a) A demoulding draw allowance of up to 4 mm on each of two opposing sides. b) Additional deviations on size of: 1) lengths of posts:mm; 2) length of gravel boards: 6 mm; 3) cross section of posts and gravel board;mm. NOTEThe cross section is measured
47、about the centre lines. 2.1.1.3 General constructional details. The heads of posts shall be weathered so as to prevent lodgement of water. 2.1.2 Posts 2.1.2.1 General. The length of concrete posts shall be as given in Table 1. 2.1.2.2 Rectangular posts. Concrete posts having a rectangular cross sect
48、ion shall be not less than 100 mm 85 mm in cross section and shall have the same section throughout their length. They shall be reinforced with four 6 mm steel reinforcing bars, except that if steel having a characteristic strength greater than 250 N/mm2 is used it shall be permissible for the cross
49、 section of the bars to be proportionately reduced. Concrete posts of other sections, e.g. with slots, shall have a strength not less than that of a rectangular post as specified above. Rectangular posts shall have a minimum of three holes for the attachment of fillets, positioned at centres of not greater than 900 mm. Holes for bolts shall allow the bolt to be freely inserted. All holes shall be free from obstructions and accurately placed. 2.1.2.3 Slotted posts. Slotted concrete posts shall have a cross section o