BS7976 Pendulum Test

How does it work?

The Pendulum measures the frictional resistance between a rubber slider mounted on the end of a pendulum arm and the test surface. This provides highway and flooring engineers with a routine method of checking the resistance of wet and dry surfaces to slipping and skidding.

Scientific basis of measurement

The Pendulum is based on the Izod principle: a pendulum consisting of a tubular arm rotates about a spindle attached to a vertical pillar. At the end of the tubular arm a head of constant mass is fitted with a rubber slider. The pendulum is released from a horizontal position so that it strikes the sample surface with a constant velocity. The distance travelled by the head after striking the sample is determined by the friction of the sample surface. A reading of Skid Resistance Values is obtained.

Standards:

BS 812 Pt. 114

BS EN 1097-8 Determination of Polished Stone Value

AS/NZS 4586:1999 Slip resistance classification of new pedestrian surface materials

BS 6077 Pt 1 Clay and calcium silicate pavers for flexible pavements.

BS 7044 Artificial sports surfaces: person/surface interaction.

BS 7188 Impact absorbing playground surfaces

BS 8204 In-situ flooring, part 3 Code of practice for polymer modified cementitious wearing surfaces.

ASTM E303 Standard Method for – Measuring Surface Frictional Properties Using British Pendulum

BS 7976 Method of operation and calibration of the pendulum tester.

EN 1436 : 1997 Road Marking Materials BS EN 13036-4:2003 Road and Airfield surface characteristics

Slip testing should not just be a one off requirement in response to an accident or slip incident but should become part of your routine ongoing proactive safety regime. If required we can carry this out on a regular basis.

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