UK Specialists in H&S Approved Floor Pendulum Testing for Businesses
and CPR 35 / COPFS Expert Witness Services for Slip Injury Lawyers
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The Floor Pendulum Test is the only floor testing recommended by the UK HSE as suitable to provide consistent, repeatable, dependable results in the case of slip injury claims and for floor safety for businesses. FloorSlip are often asked, particularly by Health and Safety Managers, to describe how we do the Pendulum Test.
Few people have seen pendulum testing conducted and particularly up to 2008 where the law changed (H&S Act 2008) to protect customers, employees and people in care
The HSE / UK Government insist that floor risk assessment is conducted as part of your duty of care and breaches of Health & safety can be punishable by a year in prison and a heavy fine
The pendulum test equipment uses a rubber slider on the end of a heavy swinging arm. The Pendulum Test arm is raised to a set elevated and accurately measured position (A) and then released. The heavy arm then swings through an arc, the rubber slider making contact with the floor at (B). There is a spring loaded device holding the rubber ‘slider’ on the end of the swinging arm allowing the arm to ‘give’ as it makes contact with the floor and the arm swings through its arc across the floor. The distance the arm travels determines how slippery the floor is (C). The further the arm travels, the less resistance there is and the more slippery the floor.
The ‘sliders’ used typically have two distinctly different hardness’s and must be prepared by levelling and roughening of the rubber surface to a required specifications as determined by the UKSRG Guidelines and BS7976-
4S = Standard Shoe Sole Simulating and has an International Rubber Hardness Degree (IRHD*) value of 96 and is used to replicate everyday use with shod feet
TRL = Transport Road Laboratories. The rubber hardness (IRHD*) is softer at 55 for this purpose to allow the slider to pass across the floor surface without causing ‘judder’, which can cause results to deviate from true.
*International Rubber Hardness Degree
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Pendulum Test History
The Pendulum Test was originally developed by a man called ‘Sigler’ and was adapted for use in the UK by the Transport Road Laboratories – hence the acronym ‘TRL’ -
The Pendulum is set up on the floor ‘spot’ (Or Slip Locus) to be tested by levelling the device using its own inbuilt spirit levels. The swing arm of the pendulum is then lowered to the floor and the height adjusted using a floor surface gauge to determine the replicated ‘footprint’. The ambient temperature is measured and recorded and the device is now ready for floor testing
The floor is wiped clean of debris and dust and is then tested ‘as is’ -
The arm of the Pendulum Test Equipment is swung 3 times to allow the rubber slider to ‘settle’ and then 5 actual test swings are carried out – all 8 swings are recorded and the average of the last 5 determines the Floor Slip Resistance Value (Or Pendulum Test Value)
This Pendulum testing procedure of levelling, checking the ‘footprint’ and the 8 swings is then repeated another 2 or 3 times. The UKSRG recommends 3 times at 0, 45 and 90 degrees in the same spot. FloorSlip sometimes do one additional the test in one additional plane where the floor has ‘grain’, for example a wooden floor, and we test along both directions of the grain; the results can be surprisingly different.
The Pendulum Tester then moves the Pendulum Testing Equipment and repeats all aspects again in a different position on the floor; typically we will test at least 3 ‘spots’ –
The first floor spot test in a high footfall area to determine the worse floor slip condition
The second floor spot test close to a wall or where the floor rarely is walked on to determine the typical state of the floor as it might have been when laid from new
The third floor spot test in an area which might experience average footfall.
The Floor Slip Injury Locus is also tested This is necessary where a floor test occurs because of a slip injury claim
The dry floor is sprayed with tap (potable) water and the whole floor testing regime as described above begins again. The floor is sprayed every time for every pendulum testing swing to replicate the worse condition – example, heavy rain or a floor recently cleaned and still wet.
If your floors are subject to regular spills or contamination such as oil, blood, urine, sawdust or talcum powder then an additional series of pendulum test swings will be conducted; the dry floor sprayed with a contaminant relevant to the work environment. And for a road skid test, the contaminate might be diesel or vehicle oil.
There may be circumstances where a contaminant and a wet floor are in combination – this will also be tested for where required.
We expect to take a minimum of 2-
The Pendulum Test Arm swinging through its arc
FloorSlip Limited, Reg No: 07757686 -