Original Version
44.1 Installation and Reconstruction
Lines and elements of lines, upon installation or reconstruction, shall provide as a minimum the safety factors specified in Table 4 for vertical loads and loads transverse to lines and for loads longitudinal to lines except where longitudinal loads are balanced or where there are changes in grade construction (see Rules 47.3, 47.4 and 47.5)
| Table 4 Minimum Safety Factors |
||||
| Element of Line |
Grade of Construction |
|||
| Grade “A” |
Grade “B” |
Grade “C” |
Grade “F” |
|
| Conductors, splices and conductor fastenings (other than tie wires) |
2 |
2 |
2 |
1 |
| Pins |
2 |
2 |
1 |
1 |
| Pole line hardware |
2 |
2 |
2 |
2 |
| Line insulators (mechanical) |
3 |
2 |
2 |
2 |
| Guy Insulators (mechanical) |
||||
| Interlocking |
2 |
2 |
2 |
2 |
| Noninterlocking |
3 |
3 |
3 |
-- |
| Guys, except in light loading districts |
2 |
2 |
2 |
1 ½ |
| Guys, in light loading rural districts |
2 |
1 ½ |
1 ½ |
1 ½ |
| Messengers and span wires |
2 |
2 |
2 |
2 |
| Wood poles |
4 |
3 |
2 |
1 |
| Metallic Service and Meter Poles |
- |
2 |
2 |
- |
| Structural or tubular steel poles (other than service and meter poles), towers, crossarms and steel members of foundations |
1 ½ |
1 ½ |
1 ½ |
- |
| Foundations against uplift |
1 ½ |
1 ½ |
1 ½ |
- |
| Foundations against depression |
3 |
2 |
2 |
- |
| Reinforced concrete poles |
4 |
3 |
3 |
- |
| Crossarms (wood) |
2 |
2 |
2 |
1 |
Strikeout and Underline Version
44.1 Installation and Reconstruction
Lines and elements of lines, upon installation or reconstruction, shall provide as a minimum the safety factors specified in Table 4 for vertical loads and loads transverse to lines and for loads longitudinal to lines except where longitudinal loads are balanced or where there are changes in grade construction (see Rules 47.3, 47.4 and 47.5)
Table 4 Minimum Safety Factors |
||||
| Element of Line |
Grade of Construction |
|||
| Grade “A” |
Grade “B” |
Grade “C” |
Grade “F” |
|
| Conductors, splices and conductor fastenings (other than tie wires) |
2 |
2 |
2 |
1 |
| Pins |
2 |
2 |
1 |
1 |
| Pole line hardware |
2 |
2 |
2 |
2 |
| Line insulators (mechanical) |
3 |
2 |
2 |
2 |
| Guy Insulators (mechanical) |
||||
| Interlocking |
2 |
2 |
2 |
2 |
| Noninterlocking wood |
3 |
3 |
3 |
-- |
| Noninterlocking glass fiber |
3 |
2(a) |
2(b) |
-- |
| Guys, except in light loading districts |
2 |
2 |
2 |
1 ½ |
| Guys, in light loading rural districts |
2 |
1 ½ |
1 ½ |
1 ½ |
| Messengers and span wires |
2 |
2 |
2 |
2 |
| Wood poles |
4 |
3 |
2 |
1 |
| Metallic Service and Meter Poles |
- |
2 |
2 |
-- |
| Structural or tubular steel poles (other than service and meter poles), towers, crossarms and steel members of foundations |
1 ½ |
1 ½ |
1 ½ |
-- |
| Foundations against uplift |
1 ½ |
1 ½ |
1 ½ |
-- |
| Foundations against depression |
3 |
2 |
2 |
-- |
| Reinforced concrete poles |
4 |
3 |
3 |
-- |
| Crossarms (wood) |
2 |
2 |
2 |
1 |
(a) Insulators are to be replaced before safety factors have been reduced (due to deterioration or changes in construction, arrangement or other conditions subsequent to installation) to less than 95 percent of the safety factor specified in Rule 44.1.
(b) Insulator are to be replaced before safety factors have been reduced (due to deterioration or changes in construction, arrangement, or other conditions subsequent to installation) to less than 75 percent of the safety factor specified in Rule 44.1.
Final Version
44.1 Installation and Reconstruction
Lines and elements of lines, upon installation or reconstruction, shall provide as a minimum the safety factors specified in Table 4 for vertical loads and loads transverse to lines and for loads longitudinal to lines except where longitudinal loads are balanced or where there are changes in grade construction (see Rules 47.3, 47.4 and 47.5)
Table 4 Minimum Safety Factors |
||||
| Element of Line |
Grade of Construction |
|||
| Grade “A” |
Grade “B” |
Grade “C” |
Grade “F” |
|
| Conductors, splices and conductor fastenings (other than tie wires) |
2 |
2 |
2 |
1 |
| Pins |
2 |
2 |
1 |
1 |
| Pole line hardware |
2 |
2 |
2 |
2 |
| Line insulators (mechanical) |
3 |
2 |
2 |
2 |
| Guy Insulators (mechanical) |
||||
| Interlocking |
2 |
2 |
2 |
2 |
| Noninterlocking wood |
3 |
3 |
3 |
-- |
| Noninterlocking glass fiber |
3 |
2(a) |
2(b) |
-- |
| Guys, except in light loading districts |
2 |
2 |
2 |
1 ½ |
| Guys, in light loading rural districts |
2 |
1 ½ |
1 ½ |
1 ½ |
| Messengers and span wires |
2 |
2 |
2 |
2 |
| Wood poles |
4 |
3 |
2 |
1 |
| Metallic Service and Meter Poles |
- |
2 |
2 |
-- |
| Structural or tubular steel poles (other than service and meter poles), towers, crossarms and steel members of foundations |
1 ½ |
1 ½ |
1 ½ |
-- |
| Foundations against uplift |
1 ½ |
1 ½ |
1 ½ |
-- |
| Foundations against depression |
3 |
2 |
2 |
-- |
| Reinforced concrete poles |
4 |
3 |
3 |
-- |
| Crossarms (wood) |
2 |
2 |
2 |
1 |
(a) Insulators are to be replaced before safety factors have been reduced (due to deterioration or changes in construction, arrangement or other conditions subsequent to installation) to less than 95 percent of the safety factor specified in Rule 44.1.
(b) Insulator are to be replaced before safety factors have been reduced (due to deterioration or changes in construction, arrangement, or other conditions subsequent to installation) to less than 75 percent of the safety factor specified in Rule 44.1.