ISSUED: 04-21-03 SHEET #: 055-9158-1
4 of 8
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CAUTION: Tighten wood screws so ceiling plate
(G) is firmly attached. But DO NOT TIGHTEN
WITH EXCESSIVE FORCE! Overtightening can
cause stress damage to wood screws, greatly
reducing their holding power! Tighten to 80 in •
lb (9 N.M.) maximum torque.
Drill two
1
/
4
" (6 mm) dia. holes to a minimum
depth of 2.5" (64 mm). Attach ceiling plate (G)
using two concrete anchors and #14 x 2.5" wood
screws (F) as shown in Illustration A and 1, 2,
and 3 (below). Tighten all fasteners.
IMPORTANT: It is the responsibility of the
installer to verify that the ceiling will safely
support the combined load of all attached
hardware and components.
1
3
Drill hole and insert anchor
Place ceiling plate over anchor and secure with screw
After repeating step one tighten all fasteners
CUT
A
W
A
Y
VIEW
INCORRECT
concrete
metal
bracket
plaster/
dry wall
CORRECT
concrete
metal
bracket
plaster/
dry wall
FOR DIRECT ATTACHMENT TO LOAD BEARING CONCRETE
ONLY! Concrete expansion anchors are not intended for
attachment to concrete ceilings covered with a layer of plaster,
drywall, or other finishing material. If mounting to concrete
ceiling covered with plaster / drywall is unavoidable, plaster /
drywall must be counterbored as shown below.
concrete
ceiling
concrete
anchor
concrete
anchor
concrete
anchor
F
F
F
Illustration A
Installation to Concrete Ceilings
ACC 203 (Alligator
®
concrete anchors) are recommended.
concrete
anchor
G
2
G
CONCRETE CEILING
