This part of BS 1722 specifies requirements for anti-intruder chain link or welded mesh fences and gates of at least 2.4 m in height for situations that require a higher level of protection than that offered by fences conforming to BS 1722\u20111 . It also includes requirements for the installation of the fencing at the specified location. Where enhanced levels of security are required, other types of fences are specified in BS 1722\u201112 and in the relevant clauses of BS 1722\u201114.<\/p>\n
Provision is made for either single or double extension arms.<\/p>\n
This British Standard includes requirements for component dimensions, together with the permissible tolerances on size. These are minimum requirements and it is acceptable to use larger sizes, except where this could adversely affect the fitting of components or if replacement parts are required to match with those already present.<\/p>\n
This British Standard includes requirements for protective treatments. However, maintenance requirements for the fence after installation are outside the scope of this standard.<\/p>\n
This British Standard specifies the requirements for posts, steel gates and gate posts and zinc coated or plastic coated zinc coated wire or mesh infill.<\/p>\n
This British Standard also specifies requirements for fence materials and their combination and installation. Because a fence is made up of a number of separate components of which the particular features vary, e.g. zinc coated or plastic coated wire, a number of combinations are available to the user. Annex A provides details of the fence requirements and installation site to be agreed between the fence supplier and client at the time of ordering a fence. However, as conditions vary from site to site, the information in Annex A is not exhaustive.<\/p>\n
Ground conditions might indicate that a variation in the length of a post or strut, or the depth to which it can be set, is desirable. The post and strut setting depths specified in this part of BS 1722 are intended for use in normal ground conditions but if special conditions exist that warrant a change in the specification, e.g. the ground is softer or firmer than usual, such a change should be agreed with the specifier. This also applies to other similar changes.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 5<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Introduction 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 3 Terms and definitions 4 Wire for chain link fences 4.1 General <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 4.2 Chain link mesh 4.3 Line wire 4.4 Stirrup wire 4.5 Tying wire 4.6 Barbed wire <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | Table 1 \u2014 Minimum diameters of wires in chain link <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 5 Materials and construction 5.1 Wire 5.2 Posts, gate posts and struts <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Table 2 \u2014 Typical steel post sizes for individual gate leaf widths (pairs or singles) A) <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Table 3 \u2014 Typical dimensions for steel posts and struts <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 5.3 Gates Table 4 \u2014 Typical frame sizes for individual gate leaf widths (pairs or singles) <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Table 5 \u2014 Typical minimum requirements for fittings for gates Table 6 \u2014 Typical minimum dimensions for gate fittings <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Figure 1 \u2014 Example of a hinge design <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Figure 2 \u2014 Example of a hinge eyebolt Figure 3 \u2014 Example of a hinge pin <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Figure 4 \u2014 Example of a drop bolt arrangement Figure 5 \u2014 Example of a locking bar arrangement <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 5.4 Fittings, fixings and straining devices <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 6 Design 7 Steel posts 7.1 Materials and protective treatments 7.2 Tolerances on size 7.3 General construction <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 7.4 Steel fence posts and struts 7.5 Steel gate posts 7.6 Steel baseplates and dowels <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Table 7 \u2014 Typical dimensions for steel posts and struts for a 2.4 m high fence <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Table 8 \u2014 Typical dimensions for steel gate posts <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 8 Installation 8.1 General 8.2 Concrete surrounding bases of posts and struts, and sills for chain link and welded mesh fences 8.3 Installation of chain link fences <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 8.4 Installation of welded mesh fences <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 9 Construction of gates 9.1 General 9.2 Dimensions Table 9 \u2014 Frame sizes for individual gate leaf widths (pairs or singles) 9.3 Construction <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 9.4 Infilling 10 Installation of gates 10.1 General 10.2 Gate posts 10.3 Gates and fittings 10.4 Sills for gates 11 Statement of conformity 11.1 Fence manufacturer 11.2 Fence installer 11.3 Certificate <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | 11.4 Statement <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Annex A (informative)\u2002 Specifying a wire mesh fence <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Figure A.1 \u2014 Typical fences and posts conforming to BS 1722\u201110 <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | Figure A.2 \u2014 Intermediate post options <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Figure A.3 \u2014 Joining welded mesh between posts <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | Figure A.4 \u2014 Typical double gate detail (internal elevation) <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Figure A.5 \u2014 Typical gate arrangement with straining posts <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Annex B (normative)\u2002 Steel components Table B.1 \u2014 Recommended steel grades <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | Annex C (normative)\u2002 Solidity calculation <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | Figure C.1 \u2014 Example for 5.00 mm OD chain link 50 mm mesh <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | Figure C.2 \u2014 Example for welded mesh <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | Table C.1 \u2014 Drag coefficients (C d) of fences <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | Table C.2 \u2014 Calculations for each component <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Fences – Specification for anti-intruder fences in chain link and welded mesh<\/b><\/p>\n |