1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Surfaces for sports areas - Multi-sports floor systems for indoor use - Test method for determination of rotational frictionBS EN 14903:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14903 June 2018 ICS 97.220
2、.10 English Version Surfaces for sports areas - Multi-sports floor systems for indoor use - Test method for determination of rotational friction Sols sportifs - Systmes de sols multisports pour utilisation en intrieur - Mthode dessai de dtermination de la glissance en rotation Sportbden - Synthetisc
3、he Sportbden fr den Innenbereich - Bestimmung der Drehreibung This European Standard was approved by CEN on 1 October 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard wit
4、hout any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other
5、 language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, D
6、enmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEA
7、N COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14903:2018 ENat
8、ional forewordThis British Standard is the UK implementation of EN 14903:2018.The UK participation in its preparation was entrusted to Technical Committee PRI/57, Surfaces for sports areas.A list of organizations represented on this committee can be obtained on request to its secretary.This publicat
9、ion does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 88657 7ICS 97.220.10Compliance with a British Standard cannot confer immunity fr
10、om legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 14903:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14903 June
11、 2018 ICS 97.220.10 English Version Surfaces for sports areas - Multi-sports floor systems for indoor use - Test method for determination of rotational friction Sols sportifs - Systmes de sols multisports pour utilisation en intrieur - Mthode dessai de dtermination de la glissance en rotation Sportb
12、den - Synthetische Sportbden fr den Innenbereich - Bestimmung der Drehreibung This European Standard was approved by CEN on 1 October 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a natio
13、nal standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A vers
14、ion in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, C
15、zech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
16、Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN
17、 14903:2018 EBS EN 14903:2018EN 14903:2018 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Determination of rotational friction 4 4.1 General principle . 4 4.2 Sampling . 5 4.2.1 Laboratory testing 5 4.2.2 Testing on site 5 4.3 Apparatus . 5
18、 4.3.1 Test device . 5 4.3.2 Measuring and recording instruments . 8 4.4 Preparation of test pieces 8 4.4.1 Laboratory testing 8 4.4.2 Field testing . 8 4.5 Procedure. 9 4.6 Evaluation and expression of results . 9 4.7 Uncertainty . 11 5 Test report 11 Annex A (informative) Leather for the test foot
19、 . 12 BS EN 14903:2018EN 14903:2018 (E) 3 European foreword This document (EN 14903:2018) has been prepared by Technical Committee CEN/TC 217 “Surfaces for sports areas”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by pub
20、lication of an identical text or by endorsement, at the latest by December 2018, and conflicting national standards shall be withdrawn at the latest by December 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not b
21、e held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Es
22、tonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 14903:2
23、018EN 14903:2018 (E) 4 1 Scope This European Standard specifies a method for the determination of the friction between multi-sports floor systems excluding synthetic turf for indoor use and a rotating foot with a vertical load. The method is applicable to tests carried out in the laboratory and on s
24、ite. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any
25、amendments) applies. EN 660-1, Resilient floor coverings Determination of wear resistance Part 1: Stuttgart test EN 60051 (all parts), Direct acting indicating analogue electrical measuring instruments and their accessories (IEC 60051) EN ISO 291, Plastics - Standard atmospheres for conditioning and
26、 testing (ISO 291) ISO 21948, Coated abrasives Plain sheets 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 friction coefficient horizontal force between the test foot and the sports surface (resulting from the measured torque) divided by the
27、 vertical load on the foot during rotation Note 1 to entry: See 4.6 to determine the coefficient of friction. 3.2 vertical load vertical force exerted on the sports floor by the test foot 3.3 torque result of forces occurring at the eccentrically positioned test soles when the test foot rotates onto
28、 the sports surface under vertical load Note 1 to entry: The torque equals the force multiplied by the distance of the skids from the centre of the test foot. 4 Determination of rotational friction 4.1 General principle Friction is measured by allowing a circular test foot, with attached test soles,
29、 to rotate on the sports surface under a vertical load. The friction resistance is calculated by recording the torque when the rotating test foot touches the test surface and then slides in rotation until the foot comes to a complete stop. From this, the coefficient of friction, , is calculated. BS
30、EN 14903:2018EN 14903:2018 (E) 5 4.2 Sampling 4.2.1 Laboratory testing The supplied test sections shall be large enough to carry out tests in at least three different places. For area elastic floors, only the top layers (wooden surface, PUR coating, PVC covering or linoleum) need to be used in the t
31、est. For point-elastic and mixed-elastic floors, the total system shall be tested. For combi-elastic floors, a minimum of the top layer, including the elastic layer, shall be tested. If necessary, the test pieces shall be glued to a stiff panel such as plywood to achieve a firm and stable support. T
32、he floor material under test shall be fixed to the laboratory floor to avoid movement during the test. 4.2.2 Testing on site The entire sports surface shall be considered as the test surface, with the test points being chosen and noted. 4.3 Apparatus 4.3.1 Test device 4.3.1.1 The test machine is sho
33、wn in Figure 1 and comprises a vertical shaft in a supporting frame with the measuring unit and the test foot, fixed to the bottom end of the shaft by means of a wobble hinge. At the upper part of the shaft, a weight is flanged, the lower part of the shaft is designed as a spindle. A constant impuls
34、e is exerted on the loaded shaft by means of a falling weight. The weight is freely suspended and connected to the shaft by a coiled polyester string which is guided over a rotating wheel. The lower frame shall rest on a rubber lining to prevent movement of the apparatus during the test. BS EN 14903
35、:2018EN 14903:2018 (E) 6 Key 1 test base (laboratory) 12 flange 2 surface sample (laboratory) 13 frame 3 skid(s) with test sole 14 weight/dead load 4 base part of test foot 15 coil 5 top part of test foot 16 stop pin/lever 6 torque measuring cell 17 hand wheel/bar 7 rubber disc 18 sliding bearing 8
36、wobble hinge 19 free hanging weight 9 guide/cage of ball bearing 20 wheel 10 ball bearing of spindle 21 polyester string 11 spindle 22 rubber lining NOTE The test machine is commonly known as the Stuttgart sliding machine. Figure 1 Test machine 4.3.1.2 The test machine shall comprise of the followin
37、g: a) supporting frame mounted on a base plate with a rubber lining, minimum 15 kg with/without additional weights; BS EN 14903:2018EN 14903:2018 (E) 7 b) shaft with a bottom and middle section formed as a ball bearing spindle, diameter 20 mm, spindle pitch 12 mm/U guided by a radially and axially a
38、cting ball bearing, the top section of the shaft guided by a sliding bearing; c) test foot (see Figure 2), comprising a steel disc having a diameter of (100 1) mm; d) sliding skids: 1) sliding skids having a width of (20 0,1) mm, a base length of 45 mm (segments of a cylinder with a radius of (25 0,
39、1) mm) the longitudinal axis of the skids (33 0,1) mm apart from axis of the shaft; e) torque measuring load cell, class 0,2 (linearity error); f) free hanging weight, having a mass of (5,0 0,1) kg; g) coil having a diameter of 54 mm. The total mass of the shaft, the flanged weight and the test foot
40、 shall be (20 1) kg; The moment of inertia of the shaft, the flanged weight and testing foot: approximately 1 300 kg/cm2 200 kg/cm2. NOTE 1 A lead disc of 250 mm diameter and 25 mm thickness will meet this requirement. Depending on the details of construction, however, the required values of total m
41、ass and moment of inertia can be met easily by changing the dimensions of the lead disc. The test sole material for the sliding skid shall be leather in accordance with EN 660-1, machine-split into 2 mm thick layers, the test surface being the newly split surface that has been manually roughened wit
42、h a new sheet of abrasive paper in accordance with ISO 21948, having a grain size 100 in the direction of sliding. NOTE 2 Leather-specification according to EN 660-1: pit-tanned sole leather, density: 1,04 0,08 g/cm3, shore hardness D: 60 5. See also Annex A. BS EN 14903:2018EN 14903:2018 (E) 8 Dime
43、nsions in millimetres Key 1 a: sliding skid with R = (25 1) mm 2 sole (leather) Figure 2 Test foot 4.3.2 Measuring and recording instruments The measuring and recording instruments shall comprise a torque transducer as part of the test foot, an amplifier and a Y-t graphic recorder. The instruments s
44、hall conform to EN 60051-1 through to EN 60051-9; accuracy class of 0,1. 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 the sampling frequency shall be 2 kHz or twice the upper frequen
45、cy response limit of the amplifier/filter system preceding the digital system, whichever is the greater. 4.4 Preparation of test pieces 4.4.1 Laboratory testing The test pieces (4.2.1) shall be conditioned for a minimum of 16 h at a temperature of (23 2) C and, if necessary, a relative humidity of (
46、50 5) % in accordance with EN ISO 291. The temperature and relative humidity used shall be recorded. Wet test pieces, e.g. outdoor synthetic sports surfaces, shall be prepared by evenly applying a volume of water that thoroughly soaks the test piece (if in doubt, this should be equal to the volume o
47、f the test piece). Following wetting, the test piece shall be allowed to drain for 15 min and the test carried out immediately after. 4.4.2 Field testing No conditioning is required but the temperature and relative humidity during the test shall be recorded. BS EN 14903:2018EN 14903:2018 (E) 9 4.5 P
48、rocedure Before starting the test, clean the area of the surface to be tested with a soft cloth or paper towel to remove any dust or dirt. Glue the prepared test soles in accordance with 4.3.1.1 to the skid and remove any dust from their surface with a brush. Place the test machine over the test loc
49、ation, so that the axis of rotation is perpendicular to the surface under test. Raise the test foot, resting on the floor, for one full rotation of the shaft. After release, the shaft shall move down helically so that the test foot contacts the test surface during the rotation phase. In the moment of contact of the test foot, the force which before supports the shaft and its flanged weight, shall act on the test foot only. During rotation of the test foot on the test sample, the ball bearing shall move upwards in its cage o
