ASTM F2125-2009 Standard Test Method for Treestand Static Stability and Adherence《Treestand静态稳定性和固定性的标准试验方法》.pdf

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1、Designation: F 2125 09An American National StandardStandard Test Method forTreestand Static Stability and Adherence1This standard is issued under the fixed designation F 2125; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the yea

2、r of last revision. 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 test method covers the determination of the staticstability and adherence of treestands relative to the manu

3、fac-turers rated capacity.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesaf

4、ety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Terminology2.1 The terminology and definitions in the referenced docu-m

5、ents are applicable to this test method.2.2 Definitions:2.2.1 backbar or V-baradjustable component of a climb-ing treestand or handclimber that engages the tree to providesupport. The backbar may be rigid or flexible.2.2.2 climbing stickdevice used to assist climbing a treeprimarily to a fixed posit

6、ion treestand. A structure that issecured to the tree and allows the user to support his weightand climb to the desired height on the tree.2.2.3 climbing treestandtreestand that provides both themeans to ascend the tree, and allow the user to remain at adesired elevation.2.2.4 handclimber, or climbi

7、ng aiddevice to assist climb-ing with a climbing treestand. A structure that allows the userto support his weight when lifting a climbing treestand with hislegs.2.2.5 ladder treestandtreestand that is secured to the treeat the elevation where the platform is located. (The laddertreestand may be secu

8、red to the tree at other locations and hassteps that are used to reach the platform or hunting position.)2.2.6 non-climbing, fixed position or hang-on treestandtreestand that is secured to the tree at the elevation where it isused. (The user usually ascends the tree by some means andthen lifts the t

9、reestand to the desired position and secures it foruse.)2.2.7 platformhorizontal structural area of a treestand onwhich the user stands and/or places his feet.2.2.8 treestanddevice designed to be affixed to a tree orits branches so as to permit an individual to sit or stand thereonfor the purpose of

10、 attaining an elevated position from which toobserve, photograph or hunt.2.2.9 tripod or tower standtripod or tower stand is con-structed to be self-supporting and is not required to be securedto a tree.3. Summary of Test Method3.1 A climbing treestand is mounted so that its platform isperpendicular

11、 to a rigid wood or metal pole when the rated loadis applied parallel to the mounting pole, at selected points. Afixed position or ladder stand shall be mounted with theplatform perpendicular to the mounting pole. A tripod standshall be positioned so that the platform is perpendicular to theapplicat

12、ion of the load. A climbing stick shall be mounted suchthat the steps are perpendicular to the pole. The platform isequipped with deflection measurement devices. The load isapplied, in order, at the selected points and recordings are madeof the deflection at each point unless the test subject movesf

13、rom its initial position or until permanent deflection from theload occurs. During this test, the test subject will rotate, butshall not slip or have permanent deformation.3.2 In addition, for climbing treestands, only the test givenin 3.1 is duplicated, except that the treestand platform is notperp

14、endicular to the mounting pole, but at an angle approxi-mately 15, such as that used in ascending or descending a tree.4. Significance and Use4.1 This test method is intended for quality assurance andproduction control purposes. This test method is not intendedto be an independent material or produc

15、t-acceptance test.1This test method is under the jurisdiction of ASTM Committee F08 on SportsEquipment and Facilities and is the direct responsibility of Subcommittee F08.16 onArchery Products.Current edition approved Sept. 1, 2009. Published October 2009. Originallyapproved in 2001. Last previous e

16、dition approved in 2005 as F 2125 051.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Apparatus5.1 A rigid round wood or metal pole, preferably vertical, isused to mount the subject product such that pole deflection isminimized.5.

17、1.1 The mounting pole diameter shall be 10 6 1 in. (2546 25.4 mm).5.2 The load shall be applied using either calibrated weightsor a mechanical device in conjunction with a calibrated loadcell.5.2.1 The use of calibrated weights requires that weightplacement be accurate to assure that the load applic

18、ationcentroid is coincident with the boundaries defined and meetsthe requirements as given in 5.3.1 and in 5.4.3. Caution shouldbe exercised for operator protection with the use of weights incase of slippage or premature failure.5.2.2 The use of a mechanical device such as a tensiletesting machine o

19、r hydraulic power, in combination withpulleys, fulcrums or bearings to re-direct forces, requires theuse of a calibrated load cell attached adjacent to the test subjectto account for friction losses.5.3 Calibrated deflection measuring devices (such as dialindicators or optical laser) shall be used t

20、o measure movementof the test subject under load. The accuracy of the measuringdevices shall be at within .010 in. (0.254 mm) and repeatablewithin .005 in. (0.127 mm). The devices shall measure move-ment parallel to the direction of the applied load and shall bemounted in such a manner to eliminate

21、deflection of the testapparatus and be placed, as a minimum, as follows:5.3.1 There shall be at least four platform deflection mea-surements taken when the load is applied.5.3.1.1 One measurement on each side of the test subject,symmetrical about the test subject centerline and at pointsfurthest fro

22、m the mounting pole, that is, the outermost cornersof the platform.5.3.1.2 One measurement on each side of the test subject,symmetrical about the test subject centerline and at pointsclosest to the mounting pole, but on the outermost sides of theplatform, that is, the outermost edges closest to the

23、mountingpole.5.4 The application of the load shall be at the points as givenin 5.3.1 on the platform area.5.4.1 The load shall be applied, one at a time, to the pointsas given in 5.3.1.1, each side, and then as given in 5.3.1.2, eachside.5.4.2 The load shall be applied to the test subject over a 50i

24、n.2(0.032 m2) area by means of a flat rectangular steel plate 5in. (127 mm) wide by 10 in. (254 mm) long and a minimum of12 in. (12.7 mm) thick. The edges of the load plate adjacent tothe test subject shall be deburred with 0.015/0.030 in. (0.381/0.762 mm) radius to reduce damage to the test subject

25、 by sharpcorners. A single layer of thin masking tape may be applied tothe surface of the load plate contacting the test subject toreduce scratching and improve friction.NOTE 1Load attachment structure must be secured to this load platetherefore fabrication by welding must assure that the plate rema

26、in flat andfree of distortion.5.4.3 The load plate shall be positioned on the test subjectwith its long axis and its center as close to the point as givenin 5.3.1 as possible, yet maintaining the 50 in.2(0.032 m2)contact area. The centerline of the load plate need not beparallel to the major axis (a

27、xis of symmetry) of the test subject.5.5 Climbing stands are to be tested at approximately 15below level, and above level, as per manufacturers directions.5.5.1 Apparatus shall be as given in 5.1 through 5.3.1.2.5.5.2 The load shall be applied as given in 5.4.2 except thatthe load plate shall be 100

28、 in.2(0.065 m2) by using a 10 in.2(254 mm2)by12 in. (12.7 mm) thick plate.6. Procedure6.1 Read instructions accompanying the test subject toascertain the proper procedure for use and mounting and securethe test subject to the mounting pole such that the platform(plane of the platform) is approximate

29、ly perpendicular to themounting pole when its rated load is applied. If necessary, useminimum auxiliary temporary means to maintain the subject inthe correct position during set-up. (Frictional forces, without aload on the subject, may not be sufficient in some cases for thesubject to remain in posi

30、tion. A small band on the mountingpole may be necessary).6.2 By geometric means, determine the location of the loadapplication points as given in 5.3.1 and 5.4.3 and markaccordingly.6.3 Determine if the test subject will deflect sufficientlyduring the test to allow the load plate to slip or shift. I

31、f so,provide auxiliary means such as clamps or stops to eliminatesideways movement of the load plate. The load must be appliedas given in 5.4 and must be continuously applied parallel to themounting pole throughout the entire test.6.4 Locate and mount deflection measurement devices, orreference poin

32、ts using optical laser, as given in 5.3.6.5 The initial trial load for beginning the test, at the firsttest point only, shall be 80 % of the test subjects ratedcapacity. For example, a test subject with a rated capacity of300 lb (661.4 kg) shall begin the test at a trial load of 240 lb(529.1 kg).6.5

33、.1 The trial load shall be applied to one of the two pointsas given in 5.3.1.1. Place the load plate centerline coincidentwith the mark as given in 5.4.3. With the initial trial (80 %)load, verify that the test subject does not move (shift) from itsinitial static equilibrium position on the mounting

34、 pole and thatdeflection from the load returns to its value with no yielding. Ifthis initial trial load verification fails, record the test as a failureto meet trial load conditions.6.5.2 After verification of the initial trial load, perform aload test at the test subjects rated capacity. Duplicate

35、this testat the opposite (remaining) point as given in 5.3.1.1 and repeatfor the test points given in 5.3.1.2.6.6 At each of the four test points, the load and all deflectionmeasurements shall be recorded. The load shall then beremoved and the deflection measurements re-recorded. A noteshall be made

36、 of any measurement that does not return towithin 0.200 in. (5.080 mm) of the maximum measureddeflection from its initial position (before loading).Anote shallbe made for any test point in which the test subject moves(shifts) from its initial static equilibrium position on themounting pole.F21250926

37、.7 Climbing treestands are only to be retested at: (1)approximately 15 below level, and (2) approximately 15above level, in accordance with the manufacturers instruc-tions.6.7.1 The application of the load for a standing platformonly shall be at a point that is the geometric centroid of the testsubj

38、ects placement area for the users feet while ascending ordescending a tree. Repeat the test procedure as given in 6.3-6.6at each angle.6.7.2 The application of the load for a sitting platform (theupper platform of a two piece stand/sit climbing treestand)shall be with a load plate as given in 5.4.2.

39、 Repeat the testprocedure as given in 6.3-6.6 at each angle, except that onlytwo points instead of four, specifically those given in 5.3.1.1shall be used at each angle.7. Report7.1 Deflection readings shall be discarded only when acalibration change is discovered after readings have been madeor when

40、 improper operator techniques can be cited.7.2 Recording of results shall include the following:7.2.1 Identification of test subject model, manufacturer, andrated capacity.7.2.2 Photograph of test subject.7.2.3 Photograph of test set-up (three views: side, top, andend).7.2.4 Load and deflection meas

41、urements at all test points.7.2.5 Verification of calibration.7.2.6 Date of test.7.2.7 If yielding or permanent deformation has beenreached, or movement (shifting) has been detected as given in6.6 or 6.7 (for climbing treestands), the corresponding load inpounds and the test point shall be noted.7.3

42、 Pass-Fail Criterion:7.3.1 Atreestand is considered failed if (after applying loadsand measurements in accordance with 5.3.1) yielding orpermanent deformation has been reached, or movement (shift-ing) has been detected as given in 6.6 or 6.7 in any section ofthe treestand.7.3.2 Atreestand is conside

43、red failed if (after applying loadsand measurement in accordance with 5.3.1) the treestand shiftsas defined in 6.6 or 6.7.7.3.3 If a treestand fails this test, the stand and a copy of thetest data shall be returned to the manufacturer.8. Precision and Bias8.1 No statement is made about either the pr

44、ecision or biasof this test method for measuring load capacity since the resultmerely states whether there is conformance to the criteria forsuccess specified in the procedure.9. Keywords9.1 backbar; climbing aid; climbing stick; platform; tree-stand; tripodAPPENDIX(Nonmandatory Information)X1. Addi

45、tional InformationX1.1 This standard is provided for use by manufacturers oftreestands and testing companies. Criteria has been developedfor certification of treestands and this standard is an integralpart of the certification. However, a treestand conforming tothis standard alone does not constitut

46、e certification and thosemanufacturers desiring certification must meet all applicablestandards as a minimum requirement.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expres

47、sly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised,

48、 either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may at

49、tend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).F2125093