Civil Engineering Reference
In-Depth Information
mechanical grinder, cleaning thoroughly, and patching with an epoxy-
grout mix in accordance with the Manufacturer's product specifi cations.
Damaged poles with cavities larger than the foregoing shall be reviewed
by the Manufacturer's engineer for disposition, and the engineer will
notify the Purchaser for further instruction, if the poles are deemed repair-
able with no reduction in required strength or durability.
The Manufacturer shall take necessary measures to prevent mold seam
leaks that may occur during the spinning process. If excessive seam leaks
are detected, the pole will be further inspected to ascertain whether suf-
fi cient quantity of cement paste has escaped to cause honeycombing or
other damage to the wall. Poles exhibiting excessive signs of honeycomb-
ing shall be rejected.
5.4 Holes
The Manufacturer shall drill or cast holes in the pole as specifi ed on
the drawings. All cast-in through holes shall contain a PVC sleeve extend-
ing through the full diameter of the pole. The diameter of all holes and
the tolerances between holes shall be as specifi ed as in Section 9.0 of this
Appendix.
5.5 Step Inserts
Unless otherwise specifi ed on the drawings, all poles shall have 5/8-in.
noncorrosive step bolt inserts cast in, spaced at a minimum distance of 15
in., but not more than 18 in. on center of 90° planes. The inserts shall be
placed along the longitudinal axis of the pole starting 8 ft above ground-
line to 4 ft from the pole tip. Step working locations, if required, will be
specifi ed by the Purchaser.
5.6 Grounding
Unless otherwise specifi ed, the Manufacturer shall provide 1/2-in.
noncorrosive inserts cast into the pole, spaced at a distance of 5 ft, begin-
ning at the pole butt and continuing to the top of the pole, or at distances
specifi ed by the Purchaser. A brass insert (tank ground) shall be cast in at
a point 6 in. from the pole top and at a point near the groundline and
connected internally to the steel reinforcing by a #6 copper wire. Each
insert shall be equipped with a 1/2-in. bolt and galvanized wire clip, for
the attachment of the Purchaser's groundwire.
5.7 Marking
All poles shall have cast in, on one face, a noncorrosive metallic iden-
tifi cation plate containing the Manufacturer's name, the name of the
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