Table 1 The fire growth factor.

From: Research on escalators used as evacuation stairs under fire scenarios

Fire category

Typical combustible materials

Fire growth coefficient (kW/s2)

Slow fire

Hardwood furniture

0.00278

Medium-speed fire

Cotton, polyester cushions

0.011

Fast fire

Filled mail bags, wooden shelf pallets, foam

0.044

Ultra fast fire

Pool fires, fast-burning decorative furniture, light curtains

0.178