Technical bulletin 133:91 that describes procedure for testing furniture in public occupancies.
Seating furniture fails to meet the requirements of this test procedure if any of the following criteria are exceeded in a room test:- By using the room instrumentation:
- A temperature increase of 200°F or greater at the ceiling thermocouple,
- A temperature increase of 50°F or greater at the 4-foot thermocouple,
- Greater than 75% opacity at the 4-foot smoke opacity monitor,
- Carbon monoxide concentration in the room of 1000 ppm vol or greater for 5 minutes,
- Weight loss due to combustion of 3 pounds or greater in the first 10 minutes of the test.
- By using oxygen consumption calorimetry:
- A maximum rate of heat release of 80 kW or greater,
- A total heat release of 25 MJ or greater in the first 10 minutes of the test,
- Greater than 75% opacity at the 4-foot smoke opacity monitor,
- Carbon monoxide concentration in the room, of 1000 ppm vol or greater for 5 minutes.
Figure 2: room configuration for testing seating items more than 40 inches across |
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