1、Designation: F2957 13Standard Specification forOrnamental Aluminum Fence Systems1This standard is issued under the fixed designation F2957; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in pare
2、ntheses 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 architecturally coated, tubular picket, ornamentalaluminum fence systems.1.2 The values
3、stated in inch-pound units are to be regardedas standard. No other units of measurement are included in thisstandard.2. Referenced Documents2.1 ASTM Standards:2B117 Practice for Operating Salt Spray (Fog) ApparatusD1654 Test Method for Evaluation of Painted or CoatedSpecimens Subjected to Corrosive
4、EnvironmentsD714 Test Method for Evaluating Degree of Blistering ofPaintsD2244 Practice for Calculation of Color Tolerances andColor Differences from Instrumentally Measured ColorCoordinatesD3359 Test Methods for Measuring Adhesion by Tape TestD523 Test Method for Specular GlossD714 Test Method for
5、Evaluating Degree of Blistering ofPaintsG154 Practice for Operating Fluorescent Ultraviolet (UV)Lamp Apparatus for Exposure of Nonmetallic Materials2.2 AEC (Aluminum Extruders Council) Standards:3Alloys as specified by AEC2.3 AAMA (American Architectural Manufacturers Associa-tion) Standards:4AAMA 2
6、603-02 Voluntary Specification, Performance Re-quirements and Test Procedures for High PerformanceOrganic Coatings on Aluminum Extrusions and Panels3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 adhesionthe bonding integrity of an organic coatingto the aluminum substrate.3.1.
7、2 corrosion resistancethe ability of an organic coatingto resist attack from manmade and natural elements whilemaintaining adhesion and protecting the aluminum substratefrom corrosion.3.1.3 fence panelfabricated unit consisting of rails andpickets. Also referred to as a fence section.3.1.4 impact re
8、sistancethe measure of an organicallycoated aluminum product to resist indentation; the ability of acoating to resist cracking or loss of adhesion due to reformingthe metal during bending or a shape change from abuse.3.1.5 ornamental accessoryany fitting that adds furtherdecoration to an ornamental
9、aluminum fence system includingitems like finials, caps, picket collars, rings, scrolls, or otherornamental panel inserts.3.1.6 postvertical fence structural component that sup-ports the fence panel in the ornamental aluminum fencesystem.3.1.7 railhorizontal structural component of a fencepanel.3.1.
10、8 tubular pickethollow vertical component of a fencepanel.3.1.9 weathering resistancethe ability of an organicallycoated aluminum fence panel to resist the effects of naturalsunlight and humidity measured by loss of gloss and colorchange (fade) over time.4. Materials and Manufacture4.1 Ornamental al
11、uminum fence pickets, rails, and postsshall be manufactured from aluminum. The testing criteria,within this document, will determine the alloy, temper, andthickness of the aluminum.4.2 Manufacture:4.2.1 Uncoated aluminum extrusion to be protected fromoutdoor elements prior to coating.4.2.2 Chemicals
12、 used in the manufacture process to beremovable by the coating pretreatment process and not affectthe weathering or corrosion resistance of the organically coatedfence panel.1This test method is under the jurisdiction of ASTM Committee F14 on Fencesand is the direct responsibility of Subcommittee F1
13、4.35 on Architectural MetalFence Systems.Current edition approved April 1, 2013. Published April 2013. DOI: 10.1520/F2957-13.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information,
14、refer to the standards Document Summary page onthe ASTM website.3Available from Aluminum Extruders Council (AEC), 1000 N. Rand Rd. Suite214 Wauconda, IL 60084, http:/www.aec.org4Available from American Architectural Manufacturers Association (AAMA),1827 Walden Office Square, Suite 550 Schaumburg, Il
15、linois 60173-4268, http:/www.aamanet.orgCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.3 Organic Coating Material:4.3.1 Organic coating system can be a liquid coat or powdercoat process capable of meeting specifications listed in #
16、8Testing-Surface finish.4.3.2 Organic coating to be applied and cured to the organiccoating manufacturer application and curing specifications.4.4 Visible fittings, screws/mechanical fasteners, and deco-rative ornamental accessories shall be manufactured from asubstrate that will permit the organic
17、coating to meet thecoating specifications listed in #8 Testing-Surface Finish.4.5 Non-visible screwless fasteners, concealed fasteners,and/or screws to be manufactured from a substrate that will notdeteriorate, break down, or corrode over the life of the fencepanel.5. TestingStructural5.1 Structural
18、 Test Method AVertical Load AssembledPanel Testing:5.1.1 Installation of Test SpecimenOne panel and twoposts with mounting hardware will be required.5.1.2 Posts will be mounted to a stationary object at themanufacturers on center distance specified for the model to betested. Allow at least 12 in. of
19、 clearance from grade to thebottom of the fence panel to allow for fence panel deformation.5.1.3 Install the fence panel into or onto the posts using themanufacture specified mounting system for the model beingtested.5.1.4 Distribute weight to the top rail of the panel to betested at two locations 1
20、2 in. on either side of the center pointof the panel. Allow fence panel to support the prescribedweight for two minutes.5.1.5 Remove weight after two minutes and inspect rails fordeformation. Panels are to have less than14 in. visibledeformation after weight is removed.5.1.6 Weight ratings for vario
21、us models.Residential 2 rail 150 poundsResidential 3-4 rail 225 poundsCommercial 2 rail 220 poundsCommercial 3-4 rail 325 poundsIndustrial 2 rail 300 poundsIndustrial 3-4 rail 500 poundsNOTE 1Four rail systems are required to meet the same weightspecification as a three-rail system.5.2 Structural Te
22、st Method B Picket Testing:5.2.1 Pickets to be inserted in a secured section (in accor-dance with 6.1.7, 6.2.8,or6.3.6) with spacing between rails notto exceed 55 inches. Industrial sections over 72 in. and up to120 in. height to be tested with rail spacing not to exceed 82inches.5.2.2 Minimum of th
23、ree pickets shall be tested using a12-in. by 12-in. flat surface with testing force pulled horizon-tally on a vertically installed section.5.2.3 Apply force centered between posts and rails.5.2.4 Remove weight after two minutes and inspect rails fordeformation. Pickets to have less than14 in. visibl
24、e deforma-tion after weight is removed.5.2.5 Weight Ratings for Various Models:Residential 55 in. spacing 50 poundsCommercial 55 in. spacing 80 poundsIndustrial 55 to 82 in. spacing 125 pounds6. Physical Dimensions6.1 Residential Fence Systems:6.1.1 Typical minimum post dimension is 2 by 2 in. (0.06
25、0-in. wall).6.1.2 Typical minimum picket dimension is58 by58 in.(0.045-in. wall) or similar dimensions and wall thickness in around, oval, or rectangular shape to meet specifications listedin 5.2.6.1.3 Typical minimum rail dimension is 1 by 1 inch. Railsshall have sufficient dimension and wall thick
26、ness to meetspecifications listed in Section 5.6.1.4 A residential fence panel can be attached to verticalposts by aluminum or stainless steel brackets, welding, or anotched rail/routed post system. The rail to be inserted insidethe routed post and secured with stainless steel screws or therail can
27、be notched or have a protrusion and inserted inside therouted post.6.1.5 The opening between rails shall not exceed 55 inches.6.1.6 Residential fence panels where the picket extendsabove the top rail shall be no less than 48-in. height if thepickets have sharp pointed ornamental spears.6.1.7 Picket
28、spacing (open area) shall be less than fourinches.6.1.8 Clearance from grade to the bottom most location of afence panel shall be less than four inches.NOTE 2Fence height is typically the distance from the grade to top ofthe top rail unless the picket extends through the top rail and the height isth
29、e distance from the grade to the top of the picket.6.2 Commercial Fence Systems:6.2.1 Typical minimum post dimension is 2 by 2 in. (0.060-in. wall) for 72-in. wide panels. 212 by 212 in. (0.065-in. wall)for 96-in. wide panels.6.2.2 Typical minimum picket dimension is34 by34 in.(0.050-in. wall) or si
30、milar dimensions and wall thickness in around, oval, or rectangular shape of equal strength to meetspecifications listed in 5.2.6.2.3 Typical minimum rail dimension for a 72-in. widesection is 1 by 1 inch. Minimum rail dimension for a 96-in.wide section 1 by 1716 inches. Rails shall have sufficientd
31、imension and wall thickness to meet specifications listed inSection 5.6.2.4 A commercial fence panel can be attached to verticalposts by; aluminum or stainless steel brackets, welding, or anotched rail/routed post system. The rail to be inserted insidethe routed post and secured with stainless steel
32、 screws or therail can be notched or have a protrusion and inserted inside therouted post.6.2.5 A commercial fence panel shall not exceed a width of96 in. on center.6.2.6 The opening between rails shall not exceed 55 inches.6.2.7 Commercial fence panels where the picket extendsabove the top rail sha
33、ll be no less than 48 in. height if thepickets have sharp pointed ornamental spears.6.2.8 Picket spacing (open area) shall be less than fourinches.F2957 1326.2.9 Clearance from grade to the bottom most location of afence panel shall be less than four inches.NOTE 3Fence height is typically the distan
34、ce from the grade to top ofthe top rail unless the picket extends through the top rail and the height isthe distance from the grade to the top of the picket.6.3 Industrial Fence Systems:6.3.1 Typical minimum post dimension is 212 by 212 in.(0.065-in. wall) for panels up to and including 72 in. tall.
35、Panels over 72 in. tall will have a typical minimum postdimension of 212 by 212 in. (0.075-in. wall). Panels over 96in. tall will have a typical minimum post dimension of 4 by 4in. (0.125-in. wall).6.3.2 Typical minimum picket dimension is 1 by 1 in.(0.060-in. wall) or similar dimensions and wall th
36、ickness in around, oval, or rectangular shape of equal strength to meetspecifications listed in Section 5.6.3.3 Typical minimum rail dimension is 112 by 112 in. forpanels up to 96 in. height. Panels over 96 in. height to have asuggested minimum dimension of 134 by 134 inches. Railsshall have suffici
37、ent dimension and wall thickness to meetspecifications listed in 5.1.6.3.4 An industrial fence panel can be attached to verticalposts by; aluminum or stainless steel brackets, welding, or anotched rail/routed post system. The rail to be inserted insidethe routed post and secured with stainless steel
38、 screws or therail can be notched or have a protrusion and inserted inside therouted post.6.3.5 Industrial fence panels where the picket extends abovethe top rail shall be no less than 48 in. height if the pickets havesharp pointed ornamental spears.6.3.6 Picket spacing (open area) shall be less tha
39、n fourinches.6.3.7 Clearance from grade to the bottom most location of afence panel shall be less than four inches.NOTE 4Fence height is typically the distance from the grade to top ofthe top rail unless the picket extends through the top rail and the height isthe distance from the grade to the top
40、of the picket.7. Workmanship7.1 All ornamental aluminum fence system componentsshall be produced using materials and finishes specified inSection 4. All shall be free from defects in workmanship.8. TestingSurface Finish8.1 Test Methods:8.1.1 Adhesion TestingAdhesion testing shall be in accor-dance w
41、ith Test Methods D3359, Method B. The minimumperformance requirement is retention of the organic coatingfilm over 100 % of the scribed surface.8.1.2 Corrosion/Salt Fog (Spray) ResistanceTesting shallbe conducted in accordance to ASTM D1654. The preparedspecimen shall be scribed as directed by Test M
42、ethod D1654.The minimum performance requirement is less than116 in.creepage from the scribe and less than6%organic coatingblistering (ASTM D714) after 1500 hours of exposure asspecified in AAMA 2603-02, 6.7.2.8.1.3 Impact ResistanceTesting shall be conducted using a5/8” diameter round-nosed impact t
43、ester 18N-m (160 in-lb)range. Apply a load directly to the coated surface of sufficientforce to deform the test sample a minimum of 0.10 inch. Applytape (Permacel 99 or equivalent)34 in. wide over the area ofdeformation by pressing down firmly against coating to elimi-nate voids and air pockets. Sha
44、rply pull the tape off at a rightangle to the plane of the surface being tested. Test piecesshould be at ambient temperatures of 65 to 80F. Minimumperformance requirement is no removal of film from thesubstrate as specified by AAMA 2603-02, 6.5.8.1.4 Weathering ResistanceSouth Florida exposure test-
45、ing or QUV Accelerated Weathering Testing shall be accepted.8.1.4.1 South Florida ExposureTest site for on-apparatustesting are acceptable as follows; Florida exposure South oflatitude 27 degrees North at 45 degree angle facing South fora minimum of 1 year as specified by AAMA 2603-02, 6.8.8.1.4.2 Q
46、UV Accelerated Weathering TestingQUV Accel-erated Weathering Machine (UVA-340 lamp) shall be con-ducted in accordance to ASTM G154. Time frame is aminimum of 1000 hours.8.1.4.3 Weathering Color RetentionAs specified byAAMA 2603-02, 6.8. It is suggested slight fading and chalkingbe limited to 10 Delt
47、a E (Hunter) units in one year SouthFlorida exposure or 1000 hours QUV (UVA-340 lamp) expo-sure.8.1.5 Product TestingAll products tested must be coatedon fence manufacturers designated coating equipment andprocesses using standard aluminum extrusions used in themanufacture of fence manufacturers fen
48、ce products.9. Significance and Use9.1 The purpose of the specification is to define minimumselection criteria and test procedures to ensure product usersthat an ornamental aluminum fence system has the strengthnecessary to withstand reasonable loads and forces, and has theappropriate combination of
49、 material and organic coating sur-face protection to withstand the effects of corrosion andweathering for an extended period of time.10. Certification10.1 When specified in the purchase order or contract, thepurchaser shall be provided with documentation from anindependent testing laboratory that a representative sample ofthe manufacturers fence system of specified material, color,height, span, and component dimension, has been tested inaccordance with this specification and the requirements havebeen met. Ornamental aluminum fence manu
