CAN CGSB-138 2-1996 Steel Framework for Chain Link Fence.pdf

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1、CGSB CAN/CGSB- II38*2-96 tt II874650 0028576 753 W CGS OfWC Canadian General Standards Board ib CAN/CGSB-l38.2-96 Supersedes CAN/CGS B - 1 38.2-M80 Steel Framework for Chain Link Fence National Standard of Canada nie CANADIAN GENERAL STANDARDS BOARD (CGSB), under whose auspices this standard has bee

2、n developed is a government agency within the Federal Department of Supply and Services. CGSB is engaged in the production of voluntary standards in a wide range of subject areas through the media of standards committees and the consensus process. The standards committees are composed of representat

3、ives of relevant interests including producers, consumers and other users, retailers. governments, educational institutions, technical, professional and trade societies, and research and testing organizations. Any given standard is developed on the consensus of views expressed by such representative

4、s. The Ministers Advisory Council on CGSB reviews the results of the consensus process. CGSB has been accredited by the Standards Council of Canada as a national standards-writing organization. The standards that it develops and offers as National Standards of Canada conform to the criteria and proc

5、edures established for this purpose by the Standards Council of Canada. In addition to standards it publishes as national standards. CGSB produces standards to meet particular needs, in response to requests from a variety of sources in both the public and private sectors. Both CGSB standards and nat

6、ional standards developed by CGSB are developed in conformance with the policies described in the Policy Manual for the Development and Maintenance of Standards by CGSB. CGSB standards are subject to review and revision at any time, so as to ensure that they keep abreast of technological progress. S

7、uggestions for their improvement, which are always welcome, should be brought to the notice of the standards committees concerned. Changes to standards are issued either as separate amendment sheets or in new editions of standards. An up-to-date listing of CGSB standards. including details on latest

8、 issues and amendments, and ordering instructions, will be found in the CGSB Catalogue, which is published annually and is available without charge upon request. Although the intended primary application of this standard is stated in its Scope. it is important to note that it remains the responsibil

9、ity of the users of the standard to judge its suitability for their particular purpose. Many tests required by CGSB standards are inherently hazardous. CGSB neither assumes nor accepts any responsibility for any injury or damage that may occur during or as the result of tests, wherever performed. CG

10、SB takes no position respecting the validity of any patent rights asserted with any item connected with this standard. Usus of this standard are expressly advised that determination of the validity of any such patent rights are entirely their own responsibility. Further information on CGSB and its s

11、ervices and standards may be obtained from: The Manager Standardization Infomation Division Canadian General Standards Bod Ottawa. Canada K1A 1G6 The STANDARDS COUNCIL OF CANADA is the cc-ordinating body of the National Standards System, a federation of independent, autonomous organizations working

12、towards the further development and improvement of voluntary standardization in the national interest. The principal objectives of the Council are to foster and promote voluntary standardization as a means of advancing the national economy. benefiting the health, safety and welfare of the public, as

13、sisting and protecting the consumer, facilitating domestic and international trade, and furthering international co-operation in the field of standards. A National Standard of Canada is a standard which has been approved by the Standards Council of Canada and one which reflects a reasonable agreemen

14、t among the views of a number of capable individuals whose collective interests provide, to the greatest practicable extent, a balance of representation of producers, users. consumers and others with relevant interests, as may be appropriate to the subject in hand. It normally is a standard that is

15、capable of making a significant and timely contribution to the national interest. Approval of a standard as a National Standard of Canada indicates that a standard conforms to the criteria and procedures established by the Standards Council of Canada. Approval does not refer to the technical content

16、 of the standard; this remains the continuing responsibility of the accredited standards-writing organization. Those who have a need to apply standards are encouraged to use National Standards of Canada whenever practicable. These standards are subject to periodic review; therefore, usen am cautione

17、d to obtain the latest edition from the organization preparing the standard. The responsibility for approving National Standards of Canada rests with the: Standards Council of Canada 45 OConnor Street Suite 1200 Ottawa, 6.8.2 is insuficient and should be incremeti (Closer line post spacing for o fix

18、ed size of roil will sometimes compnsate for the increased loading). In locations where ground snow loads do not exceed 2.4 kN/m2 and there is no probability of snow drifting or being piled against the fence, or rhe height of roil is 1.5 m above the top of ony onticipoted snow levei, the design kmd

19、as specified in par. 6.8.2. I b. may be reduced to 0.44 kNm. CANICGSB-1383-96 7 CGSB CANICGSB- 138-2-76 * = 1874650 0028587 539 where: p Cn = force coefficient = 1.2 q = hourly wind pressure in pascals based on probability of being exceded in any one year of 1 in 10. (See Cg = gust factor = 2.0 Ce =

20、 exposure factor = 1.0 for fence located at gound level R = ratio of net and gross amas of fences. 6.8.4.5 Design wind load shall be based on no ice covering of the fence unless otherwise specified (par. 9.1). = shall be applied to the gross tributary area of the line post (post spacing x height of

21、fabric) supplement No. 1 of the National Building Code for value of q) 6.8.4.6 The deflection of any line post shall not exceed 1/40 of the height, due to the loading specified in par. 6.8.4.2, 6.8.4.3 and 6.8.4.4. 6.8.5 Terminal Posh - The section modulus of terminai posts shall be at least three t

22、imes that of line posts, in terms of bending resistance. 6.8.6 6.9 COATINGS Truss Rocis - Truss rods shall have strength requirements as specified (par. 9.1). 6.9.1 Type1 6.9.1.1 Tubular steel members shall be zinc-coated inside and outside by either electrolytic or hot-dip methods. 6.9.1.2 For zinc

23、-coated tubular members, the average mass per unit area of zinc coating shall not be less than 550 g/m2 of uncoated base metal surface, as detennined from the average results of the two specimens and not less than 490 g/m2 for either of the test specimens (see par. 8.2.1). Type 2 - Tubular steel mem

24、bers shall be zinc-coated in accordance with par. 7.1 and 7.2 of ASTM F 1043. Type3 - Fabricated steel sections and truss rods shall be hot dip galvanized and shall have zinc coatings that conform to par. 6.9.1. 6.9.2 6.9.3 6.9.4 6.9.5 Truss Rods - Truss rods shall be hot dip galvanized and shall ha

25、ve zinc coatings that conform to par. 6.9.1. Zinc-Coated Barbed Wire - It shall have a minimum coating of 244 g/m2 on line wire and 183 g/m2 on barbs, as determined in accordance with ASTM A 121. 6.9.6 Aluminum-Coaed Barbed Wire - It shall have a minimum coating of 90 g/m2, as detennined in accordan

26、ce with ASTM A 428. 6.9.7 Fiings - All steel and iron fittings shall be hot dip galvanized in accordance with CSA Gl4. The average mass per unit arca of zinc coating shall be a minimum of 550 g/m2 as detmnincd in par. 8.2.1. 6.9.8 Top and Bo#om Tension We - Top and bottom tension wire shall be zinc-

27、, vinyl- or aluminumoatcd in accordance with CANKGSB-138.1 and shall have the same coating weight (or greater) as the fence fabric. 6.9.9 6.9.10 Slab zinc used for coating shall be of any grade in accordance with ASTM B 6. Vinyl-Coaled Frumework - Types 1, 2 and 3 steel members and fittings may be v

28、inyl-coated as per CAN/CGSB-138.1. For no ice covering on fence, “R” may be taken equal to 0.233 for fence with heavy fobric wire and equal to 0.183 for fence with medium, or light fabric. (See CAN/CGSB-I38.1 for descriprion of heavy, medium and light fabric wire). 8 CAN/CGSB-138.2-96 CGSB CAN/CGSB-

29、 138=2-96 * m 187Lt650 0028588 475 m 7. 7.1 8. 8.1 8.2 8.2.1 9. 9.1 9.2 9.2.1 9.2.2 9.2.3 9.2.4 PREPARATION FOR DELIVERY Unless otherwise specified (par. 9.1), normal commercial practice of packaging, labelling, packing and marking shall be acceptable. INSPECTION Sampling - Completed fence framework

30、 components shall be subject to inspection and testing according to requirements as specified. Sampling for this purpose shall be as specified (par. 9.1). Testing Mass per Unit Area of Zzc-Coatng - For Type 1 determine the mass per unit area of zinc-coating on fence posts, rails, truss rods and fitt

31、ings in accordance with ASTM A 90. For posts and rails use two tubular or fabricated test specimens taken from each end of one length of galvanized pipe, selected at random. Calculate the mass per unit area of the zinc-coating in grams per square metre by dividing the total mass of zinc, inside and

32、outside, by the total area, inside and outside, of the coated surface. NOTES Options - The following options must be specified in the application of this standard: a. Type and style (par. 4.1) b. Material and dimensional requirements of fence posts, rails and truss rods (par. 6.1, 6.2 and 6.3) c. Ma

33、terial for fittings (par. 6.4) d. Barbed wire material and construction (par. 6.5) e. Requirement for solid aluminum barb (par. 6.5) f. Requirement for barbed tape or ribbon (par. 6.6) g. Wind strength characteristics, if other than as specified (par. 6.8.1.1) h. Spacing of line posts, if other than

34、 as specified ar. 6.8.1.2) i. Requirement for rails or tension wires (par. 6.8.1.3) j. Requirement for brace rail and truss rod (par. 6.8.1.4) k. Strength of brace rails (par. 6.8.3) 1. Design wind load requirement (par. 6.8.4.5) m. Strength of truss rods (par. 6.8.6) n. Preparation for delivery, if

35、 other than as specified (par. 7.1) o. Sampling requirements (par. 8.1). Sources of Referenced Publications The publication referred to in par. 2.1.1 may be obtained from the Canadian General Standards Board, Sales Centre, Ottawa, Canada K1A 1G6. Telephone (613) 941-8703 or 1-800-665-CGSB (Canada on

36、ly). Fax (613) 941-8705. The publications referred to in par. 2.1.2 may be obtained from the Canadian Standards Association, Standards Sales, 178 Rexdale Blvd., Etobicoke, Ontdo M9W 1R3. The publication referred to in par. 2.1.3 may be obtained from the National Research Council of Canada, Publicati

37、on Sales and Distribution, Building M-19, Ottawa, Ontario K1A OR6. The publications referred to in par. 2.1.4 may be obtained from the American Society for Testing and Materials, 100Barr Harbor Drive, West Conshohocken, PA 19428-2959, U.S.A. or from the Standards Council of Canada, Standards Sales Branch, 45 OConnor Street, Suite 1200, Ottawa, Ontario KIP 6N7. CAN/CGSB-1383-96 9