Back in oct of '06 some very helpful
comments were made regarding solid-shelving
versus open-shelving, and perhaps more
importantly, about the importance for
maintaining unobstructed flue spaces
through the entire height of a rack, where
flue spaces are provided.
Questions following on that discussion are:
1). is there a rack manufacturer that has a leg-up
regarding cross bracing that prevents commodity
encroachment and subsequent obstruction of the
transverese flue spaces---particularly at the top
of racks where forklift operators have a difficult
time seeing where the load is laid.
2). In light of fire tests with cartoned-unexpanded-Group A plastic
stored on gondola shelves (solid shelves 28 inches deep) to 15 ft high,
with sprinklers delivering 0.7 gpm/ft², we saw the fire aisle jump and
spread to the end of the racking. Any thoughts on what effect:
a. 3 inch transverse flues would have exhibited
b. cartoned-unexpanded-Group A stored to 10 ft and
Class III commodity stored from 10+ ft to 15 ft.
scot deal
excelsior fire engineering
**********begin of portion of thread from oct 2006 **************
Sent: ו 29 ספטמבר2006 23:24
To: [email protected]
Subject: Re: rack storage with solid shelving below and open shelving above
The guidelines in NFPA 13 for in-rack sprinklers and flue spaces were
almost exclusively derived from tests involving cartoned commodities
(Class II and Plastic). In these tests, the test commodities were
cartoned products on wood pallets measuring roughly 42 in. by 42 in., a
"standard pallet" at the time of the tests. The racks used were also
typical of the time, with uprights spaced 8 ft. on centers. Therefore, if
....
************cut previous thread from oct 2006 ********
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