BIFMA Incremental Weights is designed specifically for BIFMA X5.1. Mainly used to assist the office chair backrest dynamic test when the load on the seat surface.
Back loading pad, which is a rigid rectangular object 200 mm high and 250 mm wide, the loading surface of which is curved across the width of the pad with a convex cylindrical curvature of 450 mm radius and with a 12 mm radius on all front edges.
This load pad is designed specifically for BIFMA X5.1, which is a rigid rectangle object 102×50 mm in dimension ,with a 12 mm front edge radius. Mainly used to test the office chair pedal static load and durability.
The purpose of this test is to determine: (1) retention of load bearing (65 % IFD), (2) a loss in thickness, and (3) structural breakdown as addressed by visual inspection. This procedure describes tests that evaluate the specimen by repeatedly deflecting the carpet cushion by a 152 mm diameter and 152 mm wide rubber covered roller exerting a force of 266±5N on the test specimens.
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