General Order 95
Strength Requirements for All Classes of Lines
44 Safety Factors
The safety factors specified in these rules are the minimum allowable
ratios of ultimate strengths of materials to the maximum working stresses,
The safety factors for structural materials other than wood
(towers, poles and crossarms) shall be applied as specified in Rules
, and 48.3–B,
The safety factors for wood members in bending shall be applied to longitudinal tension and compression as ratios of the moduli of rupture to the maximum working stresses.
The maximum working stresses used with these safety factors
shall be the maximum stresses which would be developed in the materials under
the construction arrangement with temperature and loadings as specified in
Note: Revised March 30, 1968 by Decision No. 73813 and February 13, 1974 by Decision No. 82466.
44.1 Installation and Reconstruction
44.2 Additional Construction