GB flag iconENCN flag iconZH

Webinars and Online Resources

Test Method: SATRA TM190

SATRA ground insulation index

April 2002


This method is intended to measure the resistance of the forepart of footwear to underfoot objects that cause areas of pressure on the foot. The method is applicable to all types of footwear.


This is a two stage test to assess two mechanisms of ground insulation, absorption and bridging. To assess the ability of the sole to absorb a small object a sphere is pressed into the forepart of a shoe sole under fixed loads. The pressure transmitted through the soling and insock to a test platform is recorded, a low transmitted pressure indicating good ground insulation. The test is carried out with the sphere placed both on top and between soling cleats.

To assess the effectiveness of bridging, a sphere is pressed on to the forepart of the sole which is positioned over a defined hole. The deformation into the hole is measured, a low deformation indicates good bridging/ground insulation.

The results from both stages are used to calculate the Ground Insulation Index.


BS EN 10002-2: 1992 - Verification of the force measuring system of the tensile testing machine.
SATRA TM159: 2002 - Cushioning properties.


First issued April 2002.


This test method is available to members and non-members.


This price is for a printed copy of the Test Method.

  • Members: £75
  • Non-members: £215



Go back