Change List for this Rule


General Order 95


Section IV


Strength Requirements for All Classes of Lines


48       Ultimate Strength of Materials


Structural members and their connection shall be designed and constructed so that the structures and parts thereof will not fail or be seriously distorted at any load less than their maximum working loads (developed under the current construction arrangements with loadings as specified in Rule 43 ) multiplied by the safety factor specified in Rule 44 .

Values used for the ultimate strength of material shall comply with the safety factors specified in
Rule 44 .


48.1 Wood
Table 5 Wood Strengths
48.2 Steel
48.3 Concrete
48.4 Other Structural Materials
48.5 Conductors, Span Wires, Guys and Messengers
48.6 Tower or Pole Foundations and Footings
48.7 Metallic Service Meter Poles