Change List for this Rule


General Order 95


Section IV


Strength Requirements for All Classes of Lines

48.5 Other Engineered Materials

The required strength of overhead line structures and subcomponents made with other engineered materials shall be derived in conjunction with the safety factors in Rule 44. This requirement applies to tension, compression, and shear.

Tension: If the material has a published yield strength value, that value shall be used in lieu of the tensile strength value.

Compression: The compressive strength shall be determined by suitable formula for the material used and member geometry, considering yield and /or tensile strength of the material, modulus of elasticity, slenderness ratio and eccentricity of connection. In no case shall the compressive stress be greater than the yield strength of the material.

Note: The strength may be determined per Section 2.6.2 of ASCE 111-2006.
Note: Revised March 30, 1968 by Decision No. 73813 and February 5, 2014 by Decision No. 14-02-015