ISO 16840-13:2021

Wheelchair seating — Part 13: Determination of the lateral stability property of a seat cushion ISO 16840-13:2021

Publication date:   Jun 15, 2021

Scope

This document specifies apparatus, test methods, and disclosure requirements for determination of lateral stability properties of wheelchair seat cushions by measuring the response from the cushion to a shift in the centre of mass of the load on the cushion. It provides a method of determining changes in a particular physical and mechanical property of the cushion. It does not provide information specific to cushion performance for a particular individual user. It does not provide information related to anterior-posterior stability, nor to stability contributions from cushion edges.
NOTE 1    Test conditions simulate a symmetric anatomy.
NOTE 2    Loads are intended to represent those seen under the pelvis of a 40th to 60th percentile wheelchair user.
This document is applicable to cushions used in situations other than a wheelchair.