BS 1722-18-2011 Fences Specification for free-standing temporary steel mesh perimeter fencing panels《栅栏 自立式临设钢网周边的栅栏规范》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS 1722-18:2011FencesPart 18: Specification forfree-standing temporary steel meshperimeter fencing panelsPublishing and copyright informationThe BSI copyright notice displayed in

2、 this document indicates when the documentwas last issued. BSI 2011ISBN 978 0 580 68468 5ICS 91.090The following BSI references relate to the work on this standard:Committee reference B/201Draft for comment 11/30229203 DCPublication historyFirst published (as DD 1722-18), January 2007Second (present

3、) edition, December 2011Amendments issued since publicationDate Text affectedBS 1722-18:2011 BRITISH STANDARDContentsForeword iiIntroduction 11 Scope 12 Terms and definitions 13 Fence panel 14 Marking 45 Installation guidance 4AnnexesAnnex A (normative) Fence panel tube weld test procedure 5Annex B

4、(normative) Climb deterrent mesh test 7Annex C (normative) Fence panel mesh test procedure for panel with meshwelded to the tube outer face 12Annex D (normative) Installation guidance 15Bibliography 22List of figuresFigure1Typical construction of fence panels 3Figure A.1 Sample test piece 5Figure A.

5、2 Tube weld test jig 6Figure A.3 Plan view at anchor point 7Figure B.1 Sample test area 8Figure B.2 Attaching the test mandrel to the sample piece 9Figure B.3 Test mandrel 10Figure B.4 Mandrel position central of aperture 10Figure B.5 Test pass and failure criteria 11Figure C.1 Typical apparatus 12F

6、igure C.2 Section view showing support hook 13Figure C.3 Load distribution frame 13Figure C.4 Lowering the load distribution frame onto the fence panel 14Figure D.1 Typical fence couplers 16Figure D.2 Typical footblock 17Figure D.3 Example configurations 18Summary of pagesThis document comprises a f

7、ront cover, an inside front cover, pages i to iv,pages 1 to 22, an inside back cover and a back cover.BRITISH STANDARD BS 1722-18:2011 BSI 2011 iForewordPublishing informationThis part of BS 1722 was published by BSI and came into effect on 31 December2011. It was prepared by Technical Committee B/2

8、01, Fences and gates. A list oforganizations represented on this committee can be obtained on request to itssecretary.This part of BS 1722 supersedes DD 1722-18:2007, which is withdrawn.Relationship with other publicationsBS 1722 is published in parts as follows: Part 1: Specification for chain link

9、 fences; Part 2: Specification for strained wire and wire mesh netting fences; Part 4: Specification for cleft chestnut pale fences; Part 5: Specification for close boarded and wooden palisade fences; Part 7: Specification for wooden post and rail fences; Part 8: Specification for mild steel (low ca

10、rbon steel) continuous bar fencesand hurdles; Part 9: Specification for mild steel (low carbon steel) fences with round orsquare verticals and flat horizontals; Part 10: Specification for anti intruder fences in chain link and welded mesh; Part 11: Specification for prefabricated wood panel fences;

11、Part 12: Specification for steel palisade fences; Part 13: Chain link fences for tennis court surrounds1); Part 14: Specification for open mesh steel panel fences; Part 16: Specification for organic powder coatings to be used as a plasticsfinish to components and mesh; Part 17: Specification for ele

12、ctric security fences Design, installation andmaintenance; Part 18: Specification for free-standing temporary steel mesh perimeterfencing systems.Information about this documentThe HSE welcomes this British Standard and will be participating in thedevelopment of a British Standard on free-standing t

13、emporary steel meshperimeter fencing systems.Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Itsrequirements are expressed in sentences in which the principal auxiliary verb is“shall”.Commentary, explanation and general informative material is pr

14、esented insmaller italic type, and does not constitute a normative element.1)Obsolescent.BRITISH STANDARDBS 1722-18:2011ii BSI 2011Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct applica

15、tion.Compliance with a British Standard cannot confer immunity from legalobligations.BRITISH STANDARD BS 1722-18:2011 BSI 2011 iiiBRITISH STANDARDBS 1722-18:2011This page deliberately left blankiv BSI 2011IntroductionThis part of BS 1722 has been developed as a result of increasing concernsamongst i

16、ndustry stakeholders whose suggestions for further improvement ofthe product have been solicited and incorporated into this document.NOTE 1 This process was supported by the HSE.NOTE 2 This part of BS 1722 has been written to address the concerns of theconstruction industry regarding the quality and

17、 safety of free-standing temporarysteel mesh perimeter fencing systems.1 ScopeThis part of BS 1722 specifies performance requirements for the manufacture ofsteel mesh site perimeter temporary fencing. It includes test methods for theverification that these requirements have been met. Information on

18、theconstruction of a typical fence panel that would meet these requirements hasalso been included.NOTE This part of BS 1722 complements and expands on the guidance given by theHealth b) product reference or, where applicable, the batch of products to which itbelongs;c) reference to this British Stan

19、dard, i.e. BS 1722-18:20112);5 Installation guidanceThe installation guidance given in Annex D shall be provided as a minimum toall purchasers and users of free-standing temporary steel mesh perimeterfencing systems.2)Marking BS 1722-18:2011 on or in relation to a product represents a manufacturersd

20、eclaration of conformity, i.e. a claim by or on behalf of the manufacturer that theproduct meets the requirements of the standard. The accuracy of the claim is solelythe claimants responsibility. Such a declaration is not to be confused with third-partycertification of conformity.BRITISH STANDARDBS

21、1722-18:20114 BSI 2011Annex A(normative)Fence panel tube weld test procedureA.1 PrincipleThe following procedure explains how to prepare the panel frame sample testpiece, how to assemble the sample into a typical test jig ready for testing andthe way the sample is tested.A.2 Method for preparing sam

22、ple test pieceCut the sample test piece from an existing fence panel frame as shown inFigure A.1. Care should be taken not to damage the existing tube welds whilstpreparing the sample.Figure A.1 Sample test pieceKey1 Sample test pieceA.3 Method of fitting sample test piece into test jigFit the sampl

23、e test piece into the weld pull test rig generally as shown inFigure A.2.BRITISH STANDARD BS 1722-18:2011 BSI 2011 5Figure A.2 Tube weld test jiga) Tube weld test jigKey1 Anchor point 3 Test bed2 Sample test piece 4 Pull pointb) Anchor point c) Pull pointKey Key1 Fixed bracket 1 Sample test piece2 S

24、trop 2 Strop3 Sample test piece 3 Hydraulic cylinder4 Test bed 4 Test bedRestrain one end of the test piece at the anchor point by putting a stropthrough an eye which in turn is fixed to a bracket. Securely fit the bracket tothe top of the test bed. Place the strop around the end of the test piece a

25、ndarrange so that it sits equally each side of the test piece. (See Figure A.3).At the other end of the test bed put another strop through an eye on the endof the hydraulic cylinder. Place the strop around the end of the test piece andarrange so that it sits equally each side of the test piece. Acti

26、vate the hydrauliccylinder to take up any slack in the strops. The sample test piece is now readyfor the pull test.BRITISH STANDARDBS 1722-18:20116 BSI 2011Figure A.3 Plan view at anchor pointA.4 Sample test piece testing procedureWith the sample test piece sat in the testing jig increase the force

27、to 7 KN.The manufacturer shall initially demonstrate compliance to the British Standardtesting 5 samples. If any of these samples fail then a further 5 samples should betested until a point where all 5 samples pass the test.Further tests shall be carried out every 6 months.In-house production qualit

28、y shall be covered by the manufacturers providing aproduction control procedure for each panel type. This procedure shall bedocumented in a manual which is available for external viewing.The in-house controls will consist generally of tests and inspections during andafter production.A.5 ResultsIf th

29、e welds are still intact the sample piece is deemed to have passed.Annex B(normative)Climb deterrent mesh testB.1 PrincipleThe following test procedure shows how to test fence panel mesh or otherfence panel infill materials to assess its suitability for use as a climb deterrentpanel.The test general

30、ly consists of placing a conical test mandrel of a set weight intothe aperture of the test sample to see if the sample deforms under the weight.If the sample deforms to a certain amount the sample is deemed to have failed.The sample test area to be tested should be in board of the fence panel frames

31、o that the frame is not affecting the results on the mesh or other infillmaterial. See Figure B.1.B.2 Preparing the test sampleLay the test sample (in the case of the fence panel) horizontally and supportedat each corner at a height of approximately 1.2 m above the floor so that theunderside of the

32、sample piece can be accessed to add the test weight to themandrel. See Figure B.2.BRITISH STANDARD BS 1722-18:2011 BSI 2011 7FigureB.1SampletestareaKey 1TestareaBRITISH STANDARDBS 1722-18:20118 BSI 2011FigureB.2AttachingthetestmandreltothesamplepieceKey 1TestmandrelBRITISH STANDARD BS 1722-18:2011 B

33、SI 2011 9The Test Mandrel should be generally as shown in Figure B.3.Figure B.3 Test mandrelDimensions in millimetresKey1 Test fail band 2 Loose weight (mild steel)The test mandrel consists of a nylon cone, with shape and dimensions as shownin Figure B.3. The test fail band is cylindrical and parall

34、el. At the top of themandrel is a larger diameter which prevents the mandrel from completelydropping through the test sample should the test fail. At the bottom of themandrel is provision for a loose weight to be added so the mandrel can beplaced into the test sample from the top side and then have

35、the weight addedfrom the underside.The weight of the Test Mandrel complete with the loose weight should be (6.00.1) kg.Looking down in plan view at the test sample the mandrel without the looseweight should be placed in the centre of the aperture. See Figure B.4.Figure B.4 Mandrel position central o

36、f apertureBRITISH STANDARDBS 1722-18:201110 BSI 2011From the underside of the sample the loose weight can be added to themandrel. The weight should be added slowly whilst keeping the mandrelvertical. The mandrel should be left to sit for approximately 20 seconds after ithas found its resting place i

37、n the aperture.If the aperture of the sample deforms enough for the mandrel to pass throughthe sample and into the Test Fail Band area of the mandrel then the test hasfailed. If the mandrel does not pass into the Test Fail Band then the test haspassed. See Figure B.5.Figure B.5 Test pass and failure

38、 criteriaa) Test passed b) Test failedKey1 Test fail bandB.3 Testing the fence panel samplesTest the test sample in at least three randomly chosen positions within the testarea of the sample (See Figure B.1) of each panel type to be tested. Test threefence panels from each type.The test should be ca

39、rried out in at least three randomly chosen positions withinthe test area of the sample (See Figure B.1) of each panel type to be tested. Testfive fence panels from each type.The manufacturer shall initially demonstrate compliance to the British Standardtesting 5 samples. If any of these samples fai

40、l then a further 5 samples should betested until a point where all 5 samples pass the test.Further tests shall be carried out every 6 months.In-house production quality shall be covered by the manufacturers providing aproduction control procedure for each panel type. This procedure shall bedocumente

41、d in a manual which is available for external viewing.The in-house controls will consist generally of tests and inspections during andafter production.BRITISH STANDARD BS 1722-18:2011 BSI 2011 11B.4 ResultsAny test that results in the mandrel deforming the sample as described in any ofthe tests is c

42、lassed as a failure.Annex C(normative)Fence panel mesh test procedure for panel withmesh welded to the tube outer faceC.1 PrincipleTo establish the strength of the welds holding the mesh onto the fence panelframe.The fence panel is laid down flat inside a support rig that only holds the frametubes.

43、The mesh on the fence panel is on the under side of the frame tubes sothat when sufficient weight is applied to the mesh the mesh is allowed to brakeaway from the panel frame. The load support frame is designed to spread theload as evenly as possible across all the wires on the mesh.C.2 ApparatusTyp

44、ical apparatus to test a fence panel is shown in Figure C.1.Figure C.1 Typical apparatusKey1 Support hooks 3 Trestle2 Cross beam 4 Support table under fence panelBRITISH STANDARDBS 1722-18:201112 BSI 2011It comprises 2 trestles, 2 cross beams, 4 clamps, a set of hooks and a supporttable. The purpose

45、 of the trestles and cross bars is to create a frame underwhich the fence panel can be hung from a set of hooks. The hooks arepositioned to carry the tubes on the mesh panel frame and not to carry themesh, so that when the test weight is added the mesh is free to come awayfrom the fence panel frame.

46、 See Figure C.2.The purpose of the support table is to restrict the distance the test weight dropswhen the fence panel fails.Figure C.2 Section view showing support hookSection view showingsupport hookKey1 Fence panel 2 Support tableIn addition to the framework in Figure C.1 and Figure C.2 is the lo

47、addistribution frame. (See Figure C.3.)Figure C.3 Load distribution frameKey1 Load distribution frameBRITISH STANDARD BS 1722-18:2011 BSI 2011 13The purpose of the load distribution frame is to spread the test weight evenlyacross all parts of the mesh on the fence panel.Once the fence panel is in po

48、sition the load distribution frame can be loweredonto the mesh. This can be done by using an overhead crane to lift the loaddistribution frame and position it equally inside the inner faces of the paneltubes. Once in position the frame can be lowered onto the mesh and the cranecan be lowered suffici

49、ent so the weight of the support frame is off the cranehook but the crane hook is still in a position to catch the distribution frame as itfalls through the panel when the mesh comes off the tubes. (See Figure C.4.)Figure C.4 Lowering the load distribution frame onto the fence panelC.3 ProcedurePrior to the fence panel being tested carry out a visual inspection of the panelto check that all the wires that are intended to be welded to the panel frameare in place.Load the distribution frame with