ISO 7174-1:1988 (R2023)

The calculative and experimental methods are not applicable to settees and other multiple seating, nor to swivelling or rocking chairs. They include chairs with tilting, reclining and adjustable back-angle mechanisms only when used as upright chairs. Part 2 of ISO 7174 deals with the stability of such chairs when fully reclined. The annex does form part of ISO 7174-1. The chart gives suggested minimum overturning forces applicable to all types of adult chairs according to their loaded seat heights.