GAI-Tronics 234 Stanchion Assembly - Manual (Page 2)

Pub. 42004-194M
234 Stanchion Assembly and Model 234SBA Stanchion Broadcast Assembly Page 2 of 11
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Mounting
A concrete pier is required to support both of the
stanchion assemblies. GAI-Tronics provides the
Model 84504-201 Hardware Kit to aid with the
construction of this pier.
We recommend using 3,000 psi grade concrete
as a minimum. The pier must be strong enough
to support a structure that is 9-1/2 feet tall and
weighs 250 lbs.
Reinforcement Cage
We recommend that the concrete base be 3 feet
deep and 18 inches wide, and that a
reinforcement cage be used. The reinforcement
cage is not provided by GAI-Tronics. The
following materials are necessary to construct the
reinforcement cage:
 four #4 rebars;
 three #4 ties;
 one 18-inch sonotube.
1. Construct the reinforcement cage by placing a horizontal
member in the center of the rebar.
2. Place the two remaining horizontal members 12 inches
from that center point. See Figure 2. The top of the
cage should be 3 inches below the top of the pier.
3. The reinforcement cage in Figure 2 shows the maximum
diameter that is suitable for a customer-provided 18-inch
sonotube.
4. Install two conduits in the pier—one for the telephone
wire and one for the electrical power wire.
N OTE : These conduits MUST be kept separate to
prevent interference from occurring on the audio lines.
Conduits are not s
N OTE : These conduits MUST be
kept separate to prevent interference from occurring on
the audio lines. Conduits are not supplied by GAI-
Tronics.
Figure 1. Model 234SBA shown
Figure 2. Reinforcement Cage