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FLOOR CONSTRUCTION
The
machine
room
floor
must
support
the
total
weight
of
all
the
components
as
well as the localized
weight
at
each
machine
caster.
The
floor
must
be capable
of
carrying
a load
of
approximately 100 pounds per square
foot.
The
various
units of
a 650
System
with
magnetic
tape
and/or
disk storage
are
connected by
a
large
number
of
cables
.
With
this
system
it
is
recommended
that
cables be
laid
beneath
the
machine
floor.
The most
common
method
of
preparing
a
floor for a
650
System
is
to
construct
a
raised
floor
over
the
building
floor.
A
properly designed raised
floor distributes
the entire
machine
load
more
evenly over
the building floor
and
structural
members,
materially reducing
the
necessary pounds per square
foot
rating
required
of the
building
floor,
and can provide
a
means
of
having connecting
cables
under
the floor.
The
raised
floor
can be constructed
of
wood,
concrete,
steel,
or
aluminum,
depending
on
the
customer's
desires, budget, local building
codes and
fire
insurance requirements
The
covering
used
will
depend upon such
factors as mobility
of
machine
units,
appearance and
cost.
Among
the better
types
are rubber
tile,
vinyl
tile,
grease
resistant asphalt
tile
and
finished
hardwood
floor.
The
type
of floor
covering
used
should not dust or chip
and
should lend
itself
to
ease
of
cleaning.
There
are two basic
types
of
raised
floor
construction
in
general
use,
"Raceway
Floors" and
"Free Access
Floors."
These
two
types
of
floors
are
illustrated
on
pages
40
and
41
A
raceway
floor
has
raceways
or troughs 14 inches
to
16 inches
wide and
6
inches
to 8
inches
deep
built into
the
raised
floor.
The raceways
are normally run
parallel
to
the
walls
of the
room
and carry
the
connecting cables.
Sometimes,
they are also
used
to
carry
the
208 or 230
volt
power
supply cables
and
connections
.
Raceways
should be
covered
with
removable
covers, so
the
cables
are
accessible
and
may
be
easily
laid
in
the
raceway.
Raceways
may
also
be
provided
in
existing floors
A
free
access
floor
is
so designed
that
cables
may
run
in
any
direction
under
the
machine
floor
without being restricted
to
definite
paths.
The
floor
panels
should be
removable.
This
type
of floor
allows
for
more
flexibility in
machine
layout with
the fixed
lengths
of
cables supplied with
the
650
System
.
In addition,
changes
in
machine
location
can be
made
with a
minimum
amount
of
construction
work, even
where raceways
are required beneath
the free
access
floor.
12
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