BS EN 1022:2018 pdf free.Furniture – Seating – Determination of stability.
BS EN 1022 The seat and back loading points shall be determined using the template as specified in 5.2 in themanner specified in 6.2.2 or 6.2.3.
In some cases it may not be possible to determine the loading points by means of the template.
ln such cases the seat loading point (A) shall be 175 mm forward of the seat/back junction, or at thepoint closest to this that allows the seat load to be applied. The back loading point (B) shall be a point300 mm upward from the seat/back junction.
Where the geometry of the back rest does not allow the back force to be applied at the point defined bythe above method the force shall be applied at the nearest point (up or down the back) and the bendingmoment (back force, N x floor to back loading point distance, m) shall remain constant.
lf the number of seats in the item is not obvious, divide the total seat length (in mm) by 600 mm andround to the nearest whole number to determine the number of seats. Divide the total seat length intoseats of equal length.
6.2.2 Seating with a back rest
For seating with adjustable back rests, set the back rest to its most upright position.Adjust the template such that the angle between the seat and back portions is 90°.
For upholstered and flexible seating position the loaded template (5.2) on the centre line of the seat asfar towards the rear as possible,without applying force to the back rest. Adjust the position of thetemplate by pushing the back loading portion into the back of the seating so that it is in contact with theback rest, allowing the shape of the seat portion of the template to correlate with that of the seat (seeFigure 10a)).Mark the required seat loading point (A), and back loading point (B) from the template. If relevantrepeat the procedures on the other seat(s).
Where the geometry of the back rest does not allow the back force to be applied at the point defined bythe above method the force shall be applied at the nearest point (up or down the back) and the bendingmoment (back force,N x floor to back loading point distance, m) shall remain constant.BS EN 1022 pdf download.