Change List for this Rule

 

General Order 95

 

Section IV

 

Strength Requirements for All Classes of Lines

 

48.4       Other Structural Materials

 

For other structural materials, the safety factor specified in Rule 44 shall be applied as follows:

 

Tension: The yield strength of the material used shall be divided by the safety factor specified in Rule 44 to determine the maximum allowable working stress.

 

Compression: The ultimate compressive strength of the material used shall be divided by the safety factor specified in Rule 44 to obtain the allowable working stress. The ultimate compressive strength shall be determined by suitable formula for the material used, considering yield strength of the material, modulus of elasticity, slenderness ratio and eccentricity of connection. In no case shall the ultimate compressive stress be greater than the yield strength of the material.


Shear: The ultimate shear strength of the material used shall be divided by the safety factor specified in Rule 44 to determine the maximum allowable working stress.

 

Note:      Revised March 30, 1968 by Decision No. 73813.