BS EN 17326 pdf free download
BS EN 17326-2020 pdf free download.Surfaces for sports areas – Determination of dimensional stability of shock pads used within sports systems.
This document specifies a method for determining the dimensional stability (bowing and curling) of shockpads used within sports surface systems. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests 3? Terms? and? definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — IEC Electropedia: available at http://www.electropedia.org/ — ISO Online browsing platform: available at https://www.iso.org/obp/ui 4 Apparatus 4.1 Test rig In accordance with Figures 1 and 2, comprising a flat rigid base plate and adjustable side frame with internal dimensions of 302 mm × 302 mm. The side frame shall be rigid and 50 mm ± 5 mm in height. The test rig shall allow the measurement of the distance between the test specimen and a fixed guide bar in three positions in two directions at 90° to each other to an accuracy of ±1 mm. The minimum distance between the top of the test specimen and reference bar shall be 100 mm. The measurement positions shall be: — over the centre of the test specimen; and — 10 mm ± 2 mm from the edge of the test specimen in each direction.
4.2 Air circulating oven In conformity with ISO 188 and capable of maintaining a test temperature of 70 °C ± 2 °C. 5 Test specimens Three samples of the shockpad, each measuring 300 mm ± 1 mm × 300 mm ± 1 mm. 6 Procedure 6.1 Place a test specimen in the test rig (4.1) and adjust the side frames so that on all four sides of the test specimen there is a gap of 1 mm ± 0,25 mm between the test specimen and the test frame. 6.2 Measure the height between the test specimen and the guide bar in each test position (five in total). 6.3 Place the test rig containing the test specimen into the air circulating oven (4.2) at a temperature of 70 °C ± 2 °C. After conditioning the test specimen for 240 min ± 10 min, remove the test rig and within 5 min ± 1 min measure the distance between the test specimen and the reference bar in each test position. 6.4 Allow the test rig and specimen to condition at 23 °C ± 2 °C for 24 h ± 1 h before repeating steps 6.2 and 6.3 two further times. 6.5 Repeat the procedure on the second and third test specimen. Figure 3 shows an example of shockpad deformation after test method.
7 Test report
The test report shall include the following information:
a) a reference to this document, i.e. EN 17326:2020;
b) a complete description of the surface tested, including the manufacturer’s reference, type of supporting layers and method of attachment;
c) the date of the test;
d) the maximum bowing or curling recorded in any test position on any of the test specimens;
e) the individual test results, if required.BS EN 17326 pdf download.
