37
T
Table 3: Limitations and protection requirements for different storage methods
Configuration
ST
Protection requirements in addition to sprinklers
at ceiling or roof
Storage shall be confined to blocks
not exceeding 150 m
2
in plan
Aisle between rows shall be not less
than 2,4 m wide.
Storage shall be confined to blocks
not exceeding 150 m
2
in
Aisle separating rows are not less
than 1,2m wide.
Intermediate sprinklers are recommended. (1)
Aisle separating rows are less than
1,2m wide.
Intermediate sprinklers are required
Either the aisle separating rows shall
be not less than 1,2m wide or
storage blocks shall be not more
than 150m
2
in plan area (see note
Intermediate sprinklers are recommended. (1)
Either the aisle separating rows shall
be not less than 1,2m wide or
storage
blocks shall be not more than 150
m
2
in plan area (see
Intermediate sprinklers are required or, if this is
impossible, continuous non-combustible full
height vertical bulkheads fitted longitudinall
and transversally within each shelf.
NOTE 1: when the ceiling clearance is greater than 4m, in-rack sprinklers shall be used.
NOTE 2: storage blocks shall be separated by aisles not less than 2,4m wide.
5.4 Protection of concealed spaces
If
the
height
of
the
concealed
space
at
roof
and
floor
exceeds
0,8m,
measured
between
the
underside
of
the roof
and
the
top
of
the
suspended
ceiling
or
between
the
floor
and
the
underside
of
the
raised
floor,
these spaces
shall
be
sprinkler
protected.
If
the
height
of
the
concealed
space
at
roof
and
floor
is
no
greater
than
0,8m,
the
spaces
shall
be
sprinkler protected
only
if
they
contain
combustible
materials
or
are
constructed
with
combustible
materials.
Electrical cables
with
voltage
less
than
250V,
single
phase,
with
a
maximum
of
15
cables
per
tray,
are
allowed.
The
protection
in
the
concealed
space
shall
be
to
LH
when
the
main
hazard
class
is
LH,
and
OH1
in
all
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