4.2 High Racked Storage Warehouses

4.2.1 The potential for fire growth needs to be fully considered since it is much greater within racked goods than with materials stored only at ground level.
Thus for high racked storage systems that do not
employ in-rack or ESFR sprinkler systems the
assumed minimum fire size should not be less than
3m x 3m, and this minimum size should only be
considered in exceptional circumstances.
4.2.2 The nature of the stored goods is vital in the
consideration of the fire size.
4.2.3 The type of packaging material must be
considered in the assessment of the fire size.
4.2.4 The manner of the storage wil1 affect the
potential fire size. For example, paper rolls
stored upright', ie with the hole in the centre
vertical, will allow the fire to grow much faster
than if the paper is stored horizontally.
4.2.5 The surface area of material which can support
combustion must be considered.
4.2.6 The type of sprinkler system to be installed will
affect the fire size selected. See clause 9.