78
11.3 Minimum distance between sprinklers
Sprinklers
shall
not
be
installed
at
intervals
less
than
2m
except
in
the
following
cases with:
x
where arrangements are made, to prevention adjacent sprinklers from wetting each other,
e.g. horizontal baffles;
x
intermediate sprinklers in racks.
11.4 Location of sprinklers in relation to building construction
11.4.1 Distance from walls
The
maximum
distance
from
walls
and
partitions
to
the
sprinklers
shall
be
the
smallest
value
applicable
from the
following
list:
-
2,0m
for
standard
spacing;
-
2,3m
for
staggered
spacing;
-
1,5m
where
the
ceiling
or
roof
is
open
joisted
or
the
rafters
are
exposed;
-
1,5m
from
the
open
face
of
open
faced
buildings.
11.4.2 Distance from ceiling
Sprinklers
shall
wherever
possible
be
situated
with
the
deflector
between
0,075m
and
0,15m
below
the ceiling
or
roof
except
when
they
are
fitted
in
underdrawn
ceilings.
Where
this
is
not
practicable
sprinklers may
be
installed
at
lower
levels
provided
that
the
figures
given
in
11.4.6
are
adhered
to
and
that
the
height
b
is
the
maximum
possible.
Sprinkler
shall
never
be
installed
lower
than
0,3m
below
the
underside
of
combustible
ceilings
or
0,45m below
non-combustible
roofs
or
ceilings.
Where
circumstances
make
it
unavoidable
to
use
the
maximum distances
of
0,3m
and
0,45m,
the
area
involved
shall
be
as
small
as
possible.
11.4.3 Slope of rooms
Sprinklers
shall
be
installed
with
their
deflectors
parallel
to
the
slope
of
the
roof
or
ceiling.
Where
the
slope
is
greater
than
30°
a
row
of
sprinklers
shall
be
fixed
at
the
apex
or
not
more
than
0,75m radially
there from.
11.4.4 Canopies
The
distance
from
the
edge
of
a
canopy
to
the
sprinklers
shall
not
exceed
1,5m.
11.4.5 Skylights
Skylights
with
a
volume
greater
than
1m
3
measured
above
the
normal
ceiling
level
shall
be
sprinkler protected
unless
the
distance
from
the
normal
ceiling
level
to
the
top
of
the
skylight
does
not
exceed
0,3m,
or there
is
a
tight
fitting
frame
and
glass
fitted
level
with
the
roof
or
ceiling.
11.4.6 Beams, joists etc.
To Next Page
Loading...