Change List for this Rule


Original Version
Rule 44.1


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 rural 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

Structural or tubular steel 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
Rule 44.1


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 rural 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

 

Final Version
Rule 44.1


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 rural 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