General Order 95
Section IV
Strength Requirements for All Classes of Lines
49.6 Guys and Anchors
A. Material
The exposed surface of all guys and guy rods shall be of corrosion–resisting
material.
B. Size
The size and ultimate strength of guys crossing in spans
over Class H, L, T or C circuits shall be not less than as specified in
Table 9
and shall also be such as to provide safety factors not less than those
specified in Rule 44
for the loads imposed by the construction involved under the loading conditions
specified in Rule 43
|
Table 9: Minimum Size and Strength of Guys Crossing over Class E, H, L, T or C Circuits |
||
|
Material of Strand |
Minimum Size |
|
|
Anchor Guys |
Overhead Guys |
|
|
Galvanized Steel: |
|
|
|
Common or Siemens–Martin |
5/16 in. Diameter |
1/4 in. Diameter |
|
High Strength or Extra–High Strength |
1/4 in. Diameter |
3/16 in. Diameter |
|
Copper–Covered Steel |
3 No.9 AWG |
3 No. 10 AWG |
|
Aluminum–Covered Steel |
3 No.9 AWG1 |
3 No. 10 AWG |
|
Bronze |
1/4 in. Diameter |
3 No.10 AWG |
|
Minimum Allowable Ultimate Strength of
Guys |
3,200 Pounds |
1,900 Pounds |
Note:
Table 9 revised March 30, 1968
by Decision No. 73813.
C. Strength
Where guys are used with poles or similar structures,
capable of considerable deflection before failure, they shall be able to support
the entire load, the pole below the point of guy attachments acting merely
as a strut. Stranded wires shall be used when the ultimate strength of the
guy exceeds 1,800 pounds. Anchor rods and their appurtenances shall meet
the same strength requirements as the guy wire or strand (See
Rule 44
).
D. Replacements (See Rule 44.3 )