1、Designation:F240811Standard Specification forOrnamental Fences Employing Galvanized Steel TubularPickets1This standard is issued under the fixed designation F2408;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revis
2、ion.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification establishes the minimum require-ments for coated tubular picket ornamental fence systemsfabricated from galvanized
3、 steel components.1.2 The requirements of this specification do not apply tovertical bar fence systems utilizing solid bar or wrought ironmaterials.1.3 The values stated with in-pound units are to be regardedas standard.The SI values in parentheses are provided forinformation.2.Referenced Documents2
4、.1 ASTM Standards:2A239 Practice for Locating the Thinnest Spot in a Zinc(Galvanized)Coating on Iron or Steel Articles,A653/A653M Specification for Steel Sheet,Zinc-Coated(Galvanized)or Zinc-Iron Alloy-Coated(Galvannealed)by the Hot-Dip ProcessA1008/A1008M Specification for Steel,Sheet,Cold-Rolled,C
5、arbon,Structural,High-Strength Low-Alloy,High-Strength Low-Alloy with Improved Formability,SolutionHardened,and Bake HardenableA1011/A1011M Specification for Steel,Sheet and Strip,Hot-Rolled,Carbon,Structural,High-Strength Low-Alloy,High-StrengthLow-AlloywithImprovedFormability,and Ultra-High Streng
6、thB117 Practice for Operating Salt Spray(Fog)ApparatusD523 Test Method for Specular GlossD714 Test Method for Evaluating Degree of Blistering ofPaintsD822 Practice for Filtered Open-Flame Carbon-Arc Expo-sures of Paint and Related CoatingsD1654 Test Method for Evaluation of Painted or CoatedSpecimen
7、s Subjected to Corrosive EnvironmentsD2244 Practice for Calculation of Color Tolerances andColor Differences from Instrumentally Measured ColorCoordinatesD2794 Test Method for Resistance of Organic Coatings tothe Effects of Rapid Deformation(Impact)D3359 Test Methods for Measuring Adhesion by Tape T
8、estE4 Practices for Force Verification of Testing MachinesF2814 Guide for Design and Construction of OrnamentalSteel Picket Fence Systems for Security Purposes3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 tubular picket ornamental metal fence systemanarchitectural metal fence
9、 system that combines ornamentalfence structural components(that is,tubular pickets,rails,andposts)with ornamental accessories and fasteners,assembledand evaluated as a complete installed structure.3.1.2 fence panelfabricated unit consisting of rails andpickets.Also referred to as a fence section.3.
10、1.3 railhorizontal structural component of a fencepanel.3.1.4 tubular pickethollow vertical ornamental compo-nent of a fence panel.3.1.5 postvertical fence structural component that sup-ports the panel in the ornamental metal fence system.3.1.6 ornamental accessoryany fitting that adds furtherdecora
11、tion to an ornamental metal fence system includingitems such as finials,caps,picket collars,rings,scrolls,or otherornamental panel inserts.3.1.7 adhesionthe bonding integrity of an organic coatingto the base metal substrate.3.1.8 corrosion resistancethe ability of an organicallycoated metal product
12、to resist attack due to the base metalattempting to return to a more passive oxidized state.3.1.9 impact resistancethe measure of an organicallycoated metal product to resist indention;the ability of a coatingto resist cracking or loss of adhesion due to reforming the metalduring bending or a shape
13、change from abuse.1This specification is under the jurisdiction of ASTM Committee F14 on Fencesand is the direct responsibility of Subcommittee F14.35 on Architectural MetalFence Systems.Current edition approved Dec.1,2011.Published January 2012.Originallyapproved in 2004.Last previous edition appro
14、ved in 2009 as F2408-09.DOI:10.1520/F2408-11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM Intern
15、ational,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.10 weathering resistancethe ability of an organicallycoated metal product to resist loss of coating gloss or colorchange due to excessive humidity or ultra-violet(UV)sunlightexposure.4.Significance and Use4.
16、1 The purpose of this specification is to define minimumselection criteria and test procedures to ensure product usersthat a tubular picket ornamental metal fence system has thestrength necessary to withstand reasonable loads and penetra-tion forces,and has the appropriate combination of materialand surface protection to withstand the harmful effects ofcorrosion and weathering for an extended period of time.4.2 For security applications,more definitive requirementsare listed in Guide F2814.5.Mat
