13:5.6.1.2 says on mixed commodities you apply the greatest commodity
for the storage arrangement. That would be both the type of storage
(solid pile, rack, etc) AND HEIGHT. Additional text tells us that if
you have two adjacent pallets of a higher commodity, it's too much for
the lower commodity classification so back to step 1 with the entire
area at the higher classification.
Long way of saying, NO CAN DO.
Roland
On Nov 3, 2010, at 9:32 AM, Matt Grise wrote:
I have a scenario where a customer is looking to store pallet loads
of products in a rack. They have two typical types of product. One
is an expanded, exposed group A plastic, the other is a group 3
paper product. Racks are 3 levels high, single row.
The idea came up to store the plastics only on the first and second
levels with only paper on the third level. The thought was that the
protection level could be selected to protect the plastics to the
height of the second tier, but then paper to the height of the third
tier.
I am concerned that this may not result in a high enough protection
level since (I imagine) the protection level for storage of plastics
to a certain level is based on the sprinklers spraying directly onto
the commodities and not being obstructed by an additional level of
product - even if that additional level is a lower hazard.
Any thoughts?
Matt Grisé PE*, LEED AP
Sales Engineer
Alliance Fire Protection
*Licensed in KS & MO
913.888.0647 ph
913.888.0618 f
913.927.0222 cell
www. AFPsprink.com
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