Pinnacle Systems STTS - Manual (Page 32)

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ANNEX B (informative)
Walking speeds and stride lengths
The positioning of equipment, which is activated by a person walking into the detection zone by stepping
onto a pressure-sensitive mat, is affected by speed of approach and stride length. The walking and stride
lengths depend on the physical and anthropometric data of the population.
Speed of approach
This standard assumes that the approach of persons towards the danger zone will be at walking speed.
Stride length
Available research data has shown that the 95th percentile of two steps (i.e., starting and finishing with
the same foot) measured from heel contact at walking speed is approximately 75 inches/1900 mm. By
dividing by two and subtracting the 5th percentile shoe length this gives a stride length of 28
inches/700mm. If it is assumed that an allowance has to be made, for example, between the detection
zone and the stride length of 2 inches/50 mm this gives a minimum width of 30 inches/750 mm for the
detection zone.