BS EN 16165:2021 pdf free download – Determination of slip resistance of pedestrian surfaces – Methods of evaluation.
B.1 Principle
Two test persons wearing shoes are used to determine the angle of slip, after the pedestrian surface material being tested has been evenly coated with oil. The test persons, each in turn, facing down the ramp and with an upright posture, move forwards and backwards over the test surface, as they increase their angle of inclination, until the safe limit of walking is reached and a slip occurs. The mean angle of slip obtained is used to express the degree of slip resistance. Subjective influences on the angle of slip are limited by means of a correction procedure.
B.2 Test equipment
B.2.1 Test apparatus with safety devices
The test device (Figure B.1) is a level and torsion-free plattorm 01 approximately 600 mm width and 2 000 mm length which can be adjusted longitudinally as a continuous movement to gradients from 0° to approximately 450 The lifting stroke is controlled by the test person. An angle indicator on the test device shall show the platform tilt away from the horizontal plane at an accuracy of ± 0,2°. The test apparatus shall be rigid such that the angle does not vary by more than ± 0,5° during the walking. The display of the angle nieasurement system shall be fixed in such a way that the test person cannot read it during the test.
The test person is safeguarded by railings along the sides and protected from falling by a safety harness which shall not cause a hindrance to the test person when walking on the pedestrian surface material under test.
Materials designed to be used in one direction should be tested in the intended direction of use.
B.2.3 Test Liquid
Engine oil of SAE viscosity grade 10 W 30 according to SAE 1300 151 shall be used as the test liquid (200 ± 20) mI/rn2 oil shall be evenly brushed onto the test surface prior to test walk of the first test person and then re-distributed using a brush prior to the test walk of the second test person.
Some surfaces may have an open structure (e.g. grids and gratings) which makes it impossible to determine how much oil to use. In these cases thoroughly brush the contact area with oil.
The oil should be stored in a tightly sealed vessel in order to prevent changes to its viscosity.
B.2.4 Test footwear
The test persons shall wear a test shoe with an outsole which Is rubber-based, Shore A hardness 73 ± 5 determined according to EN ISO 868 with a profile according to Figure B.2 L7j. Check the Shore A hardness of the sole before first use and periodically during the boot’s lifetime of use to monitor any change over time.
Before first use, the surface of the test shoe soling shall be thoroughly abraded using an orbital sander fitted with P400 grade silicon carbide abrasive paper in order to achieve a consistent, even, reproducible finish over the entire surface. The abrasive paper shall be discarded when noticeable wear or tearing occurs. Freshly abraded soling shall be dusted before testing using a clean, soft brush. After the test, the test shoes soling shall be wiped clean using a paper towel before storing. No solvent or gas oil should be used while cleaning.
A profiled sole is needed to determine the physical-interlock-slip-resistance which is provided by the profile of the test surface.