Back to Back Assembly:
Where two rows of racks are required, two rack assemblies may be
installed back to back.
Frame Location:
Locate back to back frames relative to each other as shown in
Figure 14, such that the rear cross brace attachment holes align
for the two adjoining frames (The frames will be facing opposite
directions). All braces must be installed, as described previously,
except that a single bolt may be used to connect the front and
rear frames and respective cross braces. The ½-13 x 1.50” long
bolt supplied with the rack is to be replaced by a ½-13 x 2 ¼” long
(supplied with racks).
When placed back to back, there must be enough distance between
the frames to allow all of the braces (four total) to be installed. The
“X” distance between anchor bolt holes should be as noted in Table
1 (see Figure 15).
Two step standard racks placed back to back do not need to have
the frames bolted together. For 2 step EP1 racks a bolt assembly is
required (C&D part # REO5253 purchased separately). Contact C&D
for more details.
The EP racks have anchor bolt slots with a 1.06” x 0.69” (26.9 mm x
17.5 mm) for One Tier and Two Step rack models and a 1.06” x 0.81”
(26.9 mm x 20.6 mm) for Two Tier and Three Tier rack models.
The distance between the anchor bolt locations when the racks are
placed back to back is shown in Table 1 and Figure 15.
Note: There may be a de-rating of anchor bolt load ratings due to the
proximity of holes. Reference anchor bolt manufacturer’s data for
information.
ADDITIONAL INSTRUCTIONS FOR MULTI-RACK ARRANGEMENTS
Table 1
Front of Rack A
Front of Rack B
Back of
Racks A & B
Back to Back Assembly
Anchor Bolt
Center Distance
"X"
Anchor Bolt distance (center to center)
racks back to back
NOTE
:
Anchor selection is determined by the anchor type, the diameter of the anchor, the depth of embedment
and anchor spacing. The selection of the anchor bolt must be reviewed by a structural engineer to ensure
that the racks will meet the seismic rating for the EP racks.
FIGURE 15
FIGURE 14
RDC Rack
Inches
mm
Inches
mm
1 Tier
3.95
100
4.32
110
2 Tier
3.88
99
4.08
104
2 Step (Std & EP1)
3.63
92
5.67
144
2 Step (EP2)
4.01
102
4.26
108
3 Tier (EP1)
4.64
118
3.88
99
3 Tier (EP2)
4.26
108
4.24
108
"X" Distance
See Figure 15
Anchor Bolt Distance
RS02098/1011/CD
7
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