IS 4103:1977 is the Indian Standard (BIS) for metal nesting chairs- specification. This standard specifies the requirements for materials, dimensions, manufacture, and finish of metal nesting chairs, commonly used in public halls, auditoriums, and commercial offices.
metal nesting chairs- Specification
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Seat Static Load Test | 90 kgf (approx. 883 N) applied once. | 1600 N (for general use) applied 10 times. | EN 16139:2013 |
| Back Static Load Test | 35 kgf (approx. 343 N) applied once. | 710 N (for general use) applied 10 times. | ANSI/BIFMA X5.4-2020 |
| Seat Durability (Fatigue) | Not specified; only a single impact test is required. | 100,000 cycles with 1000 N seat load and 300 N back load (for general use). | EN 16139:2013 |
| Frame Material Specification | Prescribed: Steel tubes to IS 1161, 15 mm nominal bore, 'Medium' class (2.65 mm thick). | Not prescribed; must pass performance tests. | EN 16139:2013 |
| Stability Test (Forward) | A 3 kgf horizontal force should not tip the chair loaded with 50 kg. | Chair is loaded with 600 N; it must withstand at least 20 N of horizontal force at the tipping point. | EN 16139:2013 |
| Drop Test / Impact Test | 35 kg sand bag dropped on seat from 150 mm height. | 120 kg test mass dropped 10 times from 180 mm height (for general use). | ANSI/BIFMA X5.4-2020 |