Nortel AccessNode 2016 User Manual page 71

Procedure 3-3 (continued)
Preparing a concrete mounting pad for the cabinet
Use the following recommendations before you prepare the cabinet mounting
site:
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Use concrete only for the foundation pad. Do not use substitute materials,
such as reinforced plastics (which lack the rigidity required for cabinet
placement).
Use a AN2016 pad mounting template, part no. A0774668 (see
to orient the mounting bolts and access conduits in the pad. The template
consists of galvanized metal mounting plates with anchor bolts and support
rails. A rubber gasket is installed in two sections between the mounting pad
and the cabinet to prevent corrosion. Use a separate template when you
install a Reltec power transfer pedestal on the pad. Order either the
AN2016 or power transfer template separately when you issue the
engineering work.
Locate the AN2016 cabinet on a site above the 100-yard flood plain. Make
sure that the site is not subject to water runoff or flash flooding during
heavy rains.
Assemble the mounting template (cast-in-place) on a firm location that is
level to within 1/4-inch over the entire length and width.
Excavate a hole for the mounting pad and cable conduits as described in
the engineering work prints. Dig to a depth of 30 inches for a standard
applications and 60 inches for areas where there is heavy frost.
Use a minimum of six inches of sand or gravel as a base for the foundation
pad. This levels the location to accept the pad.
See Figure 3-3 for the arrangement and size of the reinforcing mesh and
the template in the form prior to pouring concrete. The overall dimensions
of the concrete mounting pad are 172 in. x 106 in. (4368.8 mm x 2692.4
mm).
Use a high-early strength concrete mix so that you can place the cabinet
three days after concrete pouring. Coarse aggregate used in the concrete is
graded from 3/4-inch to No. 4 only.
Select a concrete with a minimum compression strength of 4000 psi as
determined by American Society for Testing and Materials (ASTM) C39
test of compression strength of concrete cylinders. The slump of the
concrete must be 2 to 4 inches as determined by ASTM test method C143.
Do not crown the pad.
Place the cable, conduit, ground rods and ground wires before constructing
the mounting pad (cast-in-place). Refer to local electrical codes for
specific information on grounding procedures (see
—continued—
User Guide
Installation guidelines 3-5
Figure
Figure 3-5).
Rel 1.0 Standard May 1999
3-2)