Installation Methods
What is the minimum
clearance required for installing an exposed T-bar grid
system?
For tying hanger wires, the minimum distance of 3" from solid
substrate above the ceiling to the bulb of grid (this is required
to bend the wire) or 4-1/2" to face of T-bar grid. To install a
lay-in light fixture, approximately 7-9" is required (depending on
the fixture).
What is the standard spacing
for main runners and hanger wires?
The standard spacing is 4' o.c. (on center) for both main runners
and hanger wires.
Are there general instructions
for installing a suspension system?
We use the installation standard, ASTM C636. For a copy, contact
ASTM at (610) 832-9500, or at www.astm.org. In addition, the
Ceiling and Interior Systems Construction Association publishes a
helpful handbook of recommended practices.
Can a suspended ceiling be
dropped 20 feet?
There are no specific definitions regarding the depth of a plenum.
Since hanger wires are usually 12' long, they can be spliced
together using a non-slipping knot, or suspended from a
sub-structure. Some diagonal bracing may be required.