General Order 95

Strength Requirements for All Classes of Lines

43.2       Light Loading

Light loading shall apply in all parts of the State of California where the elevation above sea level is 3000 feet or less (see Appendix A for map). This loading shall be taken as the resultant of wind pressure and deadweight under the following conditions:

A.      Wind

A horizontal wind pressure of 8 pounds per square foot of projected area on cylindrical surfaces, and 13 pounds per square foot on flat surfaces shall be assumed. Where latticed structures are used, the actual exposed area of one lateral face shall be increased by 50% to allow for pressure on the opposite face, provided this computation does not indicate a greater pressure than would occur on a solid structure of the same outside dimensions, under which conditions the latter shall be taken.

B.      Ice

No ice loading is to be considered.

C.       Temperature

Conductor temperature shall be assumed to be 25°F at the time of maximum loading.  A conductor temperature of at least 130°F shall also be assumed for computing sag and its effect on structural loads due to weight span.

Note:      Revised February 5, 2014 by Decision No. 14-02-015.