ASTM F609-05(2013)

4.1 The Horizontal Pull Slipmeter4.2 The value reported by the Horizontal Pull Slipmeter is called the slip index. Slip index is ten times the static coefficient of friction. For example, a static coefficient of friction of 0.4 is displayed by a slip index of 4.0 when measured by the Horizontal Pull Slipmeter.

4.3 The HPS can be used on inclined surfaces. No adjustment for slope is needed for measurements in the direction perpendicular to the slope and when averaging four measurements at one location taken according to step 10.14.

1.1 This test method covers measurement of the slip index of footwear sole, heel, or related materials on dry walkway surfaces in the laboratory and in the field.

1.2 The dimensional values used in the test method are given in units of inches, pounds, or degrees Fahrenheit. Alternative equivalent values are in parentheses and are for informational purposes only.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.