MIL-HDBK-1004/2A
Table 2
Height and Class of Wood
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POLE USE
MINIMUM HEIGHT
MINIMUM CLASS
CLASS NORMALLY
FEET (METERS)(a) PERMITTED
USED
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Line pole
30 (9)
5
3 or 4
Corner pole (guyed)
30 (9)
5
3 or 4
Corner pole (unguyed)
30 (9)
2
--
Dead end pole (guyed)
30 (9)
5
3 or 4
Dead end pole (unguyed)
30 (9)
3
--
Transformer poles
35 (10.5)
See Table 3
2 or 3
Transformer platform
using two poles:
(1) Existing poles
--
5
--
(2) New poles
--
3
--
Underground cable
riser poles 2.4 thru
35 kV
--
3
--
Pole--top switch
--
3
--
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(a) Increase heights by not less than 5 feet (1.5 meters) if telephone or
signal wires are caried or are likely to be installed.
2.2.2
Guys and Anchors. Provide guys and anchors to support poles or line
towers against horizontal unbalanced loads caused by angles, corners, and dead
ends of lines and where required because of extreme wind loadings. Refer to
Fink and Beaty, Standard Handbook for Electrical Engineers for criteria.
2.2.2.1 Safety Requirements.
Refer to ANSI C2 for minimum safety
requirements.
2.2.2.2 Design of Earth Anchors. Consult the manufacturers' catalogs for
types of earth anchors and design data. Select the equipment suitable for the
particular soil conditions and the construction method to be used. Refer to
NAVFAC DM-7.02, Foundations and Earth Structures for additional data on
anchors.
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