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BS 1722-1:2019 - TC Tracked Changes. Fences Specification for chain link fences, 2019
- Publication history
- Foreword [Go to Page]
- Publishing information
- Supersession
- Relationship with other publications
- Information about this document
- Use of this document
- Presentational conventions
- Contractual and legal considerations
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Dimensions and general characteristics
- 4.1 Fences
- 4.2 Gates [Go to Page]
- 5 Additional security
- 6 Gates
- 67 Materials and construction [Go to Page]
- 7.1 Welding
- 6.17.2 Wire [Go to Page]
- 6.1.17.2.1 General
- 6.1.27.2.2 Chain link mesh and line wire
- 6.1.3 Line wire [Go to Page]
- 6.1.47.2.3 Stirrup wire
- 6.1.57.2.4 Tying wire
- 6.1.67.2.5 Barbed wire
- 6.2 Concrete posts and struts [Go to Page]
- 6.2.1 Material
- 6.2.2 Tolerance on size
- 6.2.3 General construction
- 6.2.4 Fence posts and struts
- 6.2.5 Gate posts and struts [Go to Page]
- General dimensions of concrete gate posts and struts shall conform to Table 3 and shall not be tapered. [Go to Page]
- 6.3.17.3.1 Materials and protective treatment
- 6.3.27.3.2 Tolerances on size
- 6.3.37.3.3 General construction
- 6.3.47.3.4 Fence posts and struts
- 6.3.5 Gate posts and struts [Go to Page]
- 7.3.5 Gate posts and struts
- 6.3.67.3.6 Baseplates and dowels
- Gate posts, straining posts and struts shall be fitted with baseplates, baseflats or dowels.
- Baseplatesbaseflats shall have a minimum thickness of 3 mm and, shall be continuously welded to the posts Baseplates for steel straining posts and struts shall project at least 50 mm all roundon at least two sides of the post.
- 6.3.7 Welding [Go to Page]
- 6.47.4 Construction of gates [Go to Page]
- 6.4.17.4.1 General
- Table 6 Steel gate frames and braces for gates up to 2.15 m
- 6.4.3 Infill [Go to Page]
- 6.4.4 Hinges
- 6.4.5 Drop bolts and slam plates
- 6.4.6 Locking device
- 6.5 Timber posts and struts [Go to Page]
- 6.5.1 Material
- 6.5.2 Tolerances on size
- 6.5.3 Fence posts and struts [Go to Page]
- 7.4.2 Hinges
- 7.4.2.1 General
- 7.4.2.2 Hinge safety
- 7.4.2.3 Hinges and security
- 6.67.5 Fittings, fixings and straining devices [Go to Page]
- 7.5.1 General
- 6.6.17.5.2 Eye bolt strainers
- 6.6.27.5.3 Winding brackets
- 6.6.37.5.4 Stretcher bars
- 6.6.47.5.5 Staples
- 6.6.57.5.6 Preformed rings
- 6.6.67.5.7 Nails, bolts, washers, and screws
- 6.77.5.8 Extension arms for barbed wire
- NOTE This clause applies to both integral and separate extension arms for barbed wire unless otherwise stated. [Go to Page]
- 6.7.17.5.8.1 General
- 6.7.27.5.8.2 Extension arms for straining posts and gate posts
- 6.7.37.5.8.3 Extension arms for intermediate posts
- 6.7.47.5.8.4 Extension arms for gates
- 8 Design
- 79 Installation [Go to Page]
- 7.19.1 Line and level [Go to Page]
- 9.1.1 General
- 9.1.2 Line
- 7.29.2 Posts and struts [Go to Page]
- 9.2.1 General
- Holes for fence posts and struts set in rammed backfill only shall be as small as practicable for refilling and ramming.
- 9.2.2 Foundations and positioning
- 7.39.2.3 Straining posts
- 7.49.2.4 Struts
- 7.59.2.5 Intermediate posts
- 7.69.2.6 Gate posts
- 7.79.3 Line wires [Go to Page]
- 9.3.1 General
- 7.89.3.2 Straining Line wires at straining posts
- 7.99.3.3 IntermediateLine wires at intermediate posts
- 7.109.4 Chain link fencingmesh
- 7.11 Barbed wire
- 7.11.1 Extension arms [Go to Page]
- 7.11.2 Barbed wire on gates
- 8 Gates [Go to Page]
- 910 Renovation of damage to hot dip galvanized coating
- 1011 Statement of conformity [Go to Page]
- 10.111.1 Fence manufacturer/supplier
- 10.211.2 Fence installer
- 10.311.3 Certificate
- 10.411.4 Statement
- Annex A (normative)
- Concrete components [Go to Page]
- A.1 Materials
- A.1.1 Cement
- A.1.2 Aggregate
- A.1.3 Admixtures
- A.1.4 Chloride content
- A.1.5 Reinforcement
- A.2 Moulds
- A.3 Manufacture
- A.3.1 Mixing
- A.3.2 Placing and compaction
- A.3.3 Location of reinforcement
- A.3.4 Protection from freezing
- A.3.5 Maturing
- A.4 Surface characteristics [Go to Page]
- A.4.1 Surface finish as cast
- A.4.2 Surface finish as treated
- A.5 Tests
- Annex BA (normative)
- Steel components and protective treatments [Go to Page]
- B.1 Material form
- B.2A.1 Material grades
- B.3A.2 Protective treatment
- Annex B (normative) [Go to Page]
- B.1 Chain link solidity calculation [Go to Page]
- Solidity =
- B.2 Calculation of wind loads [Go to Page]
- B.2.1 General
- B.2.2 Example calculation for (5 × 50) mm standard galvanized chain link fencing on (50 × 50 × 3.0) mm pre-galvanized steel post
- B.2.3 Example calculation for (50 × 50 × 3) mm pre-galvanized tube
- B.2.4 Example calculation for (50 × 50 × 6) mm rolled steel angle
- Annex C (informative)
- Specifying a chain link fence [Go to Page]
- C.1 General
- C.2 Site conditions
- C.3 Construction of fence [Go to Page]
- Table D.1 Determination of moisture content of timber to be treated for use in fencing
- Bibliography [Go to Page]
- Standards publications
- Other publications
- Length of electrodes within the timber
- Type of timber
- %
- 25 mm, or sapwood thickness if less
- a) All sapwood
- b) Heartwood of wood species other than those listed in c):
- 28
- 25 mm
- posts
- 12 mm
- other components
- c) Heartwood of sweet chestnut, dahoma, danta, guarea, kapur, kempas, oak
- 5 mm
- 30369049.PDF [Go to Page]
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions [Go to Page]
- Figure 1 — General characteristics of a chain link fence
- 4 Dimensions and general characteristics [Go to Page]
- Table 1 — General characteristics of chain link fences with zinc (Z) or zinc alloy (ZA) coated mesh
- Table 2 — General characteristics of chain link fences with plastic coated mesh
- 5 Additional security
- 6 Gates
- 7 Materials and construction [Go to Page]
- 7.1 Welding
- 7.2 Wire
- 7.3 Posts, gate posts and struts
- Table 3 — Typical dimensions for steel posts and struts
- Table 4 — Typical steel post sizes (SHS) for individual gate leaf widths (pairs or singles)
- 7.4 Construction of gates
- Table 5 — Typical frame sizes for individual gate leaf widths (pairs or singles) A)
- Figure 2 — Example of a hinge design
- Table 6 — Typical minimum fittings for gates
- Table 7 — Typical minimum dimensions for gate fittings
- Figure 3 — Example of a hinge eyebolt
- Figure 4 — Example of a hinge pin
- Figure 5 — Example of a drop bolt arrangement
- Figure 6 — Example of a locking bar arrangement
- 7.5 Fittings, fixings and straining devices
- 8 Design
- 9 Installation [Go to Page]
- 9.1 Line and level
- 9.2 Posts and struts
- 9.3 Line wires
- 9.4 Chain link mesh
- 9.5 Toppings
- 10 Renovation of damage to hot dip galvanized coating
- 11 Statement of conformity [Go to Page]
- 11.1 Fence manufacturer/supplier
- 11.2 Fence installer
- 11.3 Certificate
- 11.4 Statement
- Annex A (normative) Steel components and protective treatments [Go to Page]
- Table A.1 — Recommended steel grades
- Annex B (normative) Chain link solidity calculation and wind load calculation [Go to Page]
- Figure B.1 — Example for 5.00 mm OD chain link 50 mm mesh
- Table B.1 — Drag coefficients (Cd) of fence panels
- Table B.2 — Calculations for each component
- Annex C (informative) Specifying a chain link fence
- Bibliography [Go to Page]
