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1、BRITISH STANDARD BS EN 14809:2005 Incorporating corrigendum no. 1 Surfaces for sports areas Determination of vertical deformation The European Standard EN 14809:2005 has the status of a British Standard ICS 97.220.10 BS EN 14809:2005 This British Standard was published under the authority of the Sta
2、ndards Policy and Strategy Committee on 30 June 2006 BSI 2007 ISBN 978 0 580 60821 6 National foreword This British Standard is the UK implementation of EN 14809:2005, incorporating corrigendum October 2007. The UK participation in its preparation was entrusted to Technical Committee PRI/57, Surface
3、s for sports areas. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot
4、 confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments 17512 Corrigendum No. 1 31 December 2007 The second and third sentences have been deleted in subclause 7.1.3 W - - - - - - - - 7 7 * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
5、W W D - - w - - - - EN 14809:2005 (E) 2 Contents page Foreword 3 1 Scope.4 2 Normative references .4 3 Terms and definitions.4 4 Principle.4 5 Test piece 5 6 Conditioning and test temperature5 7 Apparatus5 8 Procedure6 9 Expression of results7 10 Test report.8 EN 14809:2005 (E) 3 Foreword This Europ
6、ean Standard (EN 14809:2005) has been prepared by Technical Committee CEN/TC 217 “Surfaces for sports areas”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest
7、by June 2006, and conflicting national standards shall be withdrawn at the latest by June 2006. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
8、Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 14809:2005 (E) 4 1 Scope This European Standard specifies a method
9、for the determination of the vertical deformation of sports surfaces. NOTE The method specified is commonly known as the Artificial Athlete (Stuttgart) method. 2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated referen
10、ces, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 12229, Surfaces for sports areas Procedure for the preparation of synthetic turf and textile test pieces ISO 6487, Road Vehicles Measurement techniques in
11、 impact tests Instrumentation 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 area-elastic sports surface sports surface, to which the application of a point force causes deflection over a relatively large area around the point of ap
12、plication of the force 3.2 point-elastic sports surface sports surface, to which the application of a point force causes deflection only at or close to the point of application of the force 3.3 combination-elastic sports surface area-elastic sports surface with a point-elastic top layer, to which th
13、e application of a point force causes both localized deflection and deflection over a wider area 3.4 mixed-elastic sports surface point-elastic sports surface with an area-stiffening component NOTE A mixed-elastic sports surface has deflection characteristics between those of an area-elastic surface
14、 and a point- elastic surface. 3.5 vertical deformation deformation of the surface to an applied normalized load 4 Principle A weight is allowed to fall onto a spring placed on the test piece; the maximum deformation applied is recorded. EN 14809:2005 (E) 5 5 Test piece For area-elastic and combined
15、-elastic sports surfaces, the test piece shall be a sample of the complete surfacing system measuring 3,5 m by 3,5 m, assembled and installed in accordance with the manufacturers stated method, on a substrate complying with the manufacturers requirements. For point-elastic and mixed-elastic sports s
16、urfaces, the test piece shall be a piece of the surface of minimum size 1,0 m by 1,0 m, in combination with the supporting layers to be used in service and using the recommended method of attachment in accordance with the manufacturers instructions. Laboratory test pieces of either synthetic turf or
17、 textile materials shall be prepared in accordance with EN 12229. 6 Conditioning and test temperature For tests in the laboratory, condition the test piece for a minimum of 40 h at a temperature of (23 2) C. Tests on site shall be carried out at the prevailing ambient temperature and humidity, which
18、 shall be recorded and reported. 7 Apparatus 7.1.1 The principle of the apparatus is shown in Figure 1 and consists of the components specified in 7.1.2 to 7.1.11. 7.1.2 Falling weight having a mass of (20 0,1) kg with a hardened striking surface guided so that it is allowed to fall smoothly and ver
19、tically with minimum friction. 7.1.3 Spiral spring, having a diameter of (69 1) mm, whose characteristic, when mounted in the assembly described, is linear with a spring rate of (40 1,5) N/mm over the range 0,1 kN to 1,6 kN with a hardened upper plate. 7.1.4 Adjustable supporting feet, at least 250
20、mm from the point of application of the load for a point elastic sports surface and at least 600 mm from the point of application of the load for an area elastic sports surface. 7.1.5 Steel base plate, having a flat lower side, an edge radius of 1 mm, a diameter of (70,0 0,1) mm and a minimum thickn
21、ess of 10 mm. 7.1.6 Metal guiding tube having an internal diameter of (71,0 0,1) mm. 7.1.7 Two horizontal projections on the testing foot for the sensors. 7.1.8 Testing foot, consisting of the steel base plate, force sensing device, spring and the upper plate (minimum thickness 20 mm, measured at th
22、e centre of the plate) together, guided in the guiding tube. The total mass of the testing foot (without guiding tube) shall be (3,5 0,35) kg. 7.1.9 Two sensors, e.g. electronic pick-ups with a measuring range of 10 mm and an uncertainty no greater than 0,05 mm. The distance between the sensors and
23、the axis of the apparatus shall be 125 mm. The sensors shall be symmetrically positioned around the central axis of the apparatus. 7.1.10 Means of supporting the weight, allowing it to be set to the drop height with an uncertainty no greater than 0,25 mm. 7.1.11 Means of conditioning and recording t
24、he signal from the force sensing device and the sensors and a means of displaying the record. The channel frequency class of the conditioning amplifier, in accordance with ISO 6487, shall be 1 kHz. EN 14809:2005 (E) 6 The conditioning amplifier shall be followed by or shall incorporate a low-pass fi
25、lter having a 2nd order Butterworth characteristic with a -3 dB frequency of 120 Hz. Filtration may be implemented in hardware or software. The response of the system at any given frequency shall be within 0,5 dB of the expected response, calculated on the basis of the Butterworth function. The syst
26、em should be able to record the peak value of single force pulse signals of 10 ms duration with an uncertainty of no greater than 2 %. If digital recording techniques are used, the word length shall be 12 bits, the amplitude of the signal shall be no less than 25 % of the equipment full scale and th
27、e sampling frequency shall be 2 kHz or twice the upper frequency response limit of the amplifier/filter system preceding the digital system, whichever is the greater. 8 Procedure 8.1 Set up the apparatus so that it is vertically positioned on the test piece such that the weight falls at least 20 cm
28、from the edge, for point-elastic and mixed-elastic sports surfaces, or at least 1 m from the edge, for area- elastic and combination-elastic sports surfaces. 8.2 Adjust both sensors (e.g. deformation pick-ups) on the connecting line of the sensors through the falling weight axis with the same distan
29、ce to the falling weight axis on a separate stand (total distance between the sensors 125 mm). Depending on the type of sports floor, the minimum distance between the supporting feet on the stand and the falling weight axis shall be given in the appropriate specifications. 8.3 Before carrying out me
30、asurements, the deformation pick-ups shall contact the horizontal projections on the test foot. Activate the recording device before releasing the falling weight. 8.4 Set the height of the lower face of the falling weight so that it is (120 0,25) mm above the testing foot. The testing foot gives a p
31、re-loading of the surface and a corresponding deformation of the surface. This is the zero position. Allow the weight to fall onto the testing foot once only. 8.5 Record the force applied to the surface and the resulting deformation in the course of the impact. Within 5 s of the impact, lift and re-
32、attach the falling weight to its support mechanism so that the surface can recover before the following impact. 8.6 Unless otherwise specified, repeat the procedure described in 8.4 twice at intervals of 1 min giving a total of three impacts. Record the mean value of the deformation from the second
33、and third impacts. If further tests are to be carried out on the same sample, each test shall be carried out at a new location, no test position being less than 100 mm from any other. EN 14809:2005 (E) 7 9 Expression of results 9.1 Calculate the vertical deformation, D, from the following equation.
34、max max N5001 f F D where fmax is the maximum deformation of the sports floor in the falling weight axis, expressed in millimetres (mm) (mean maximum of the pick-up values at each time); Fmax is the maximum force (peak value), expressed in Newtons (N). 9.2 Calculate the vertical deformation of a sin
35、gle testing spot as the mean of the vertical deformation results of the last two impacts, unless otherwise specified, and report the result to the nearest 0,1 mm. Key 1 guide for the falling weight 2 electromagnet 3 falling weight 4 upper plate 5 spring 6 guiding tube 7 force sensing device 8 base p
36、late 9 horizontal projections 10 sensors (pick up) Figure 1 Artificial athlete apparatus EN 14809:2005 (E) 8 10 Test report The test report shall include the following information. a) reference to this European Standard, i.e. EN 14809:2005; b) complete identification of the surface tested, a stateme
37、nt of the manufacturers reference, the type of supporting layers and method of attachment, and the dimensions of the test piece; c) ambient temperature and relative humidity; d) deformation, D; e) condition of the surface at the time of test, i.e. wet or dry; f) statement of the uncertainty on the r
38、esult reported. blank BS EN 14809:2005 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Roy
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