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Original General Order 95


Section IV


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 stress due to wind and dead weight 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

Temperature shall be considered to be 25F at the time of maximum loading.  The normal temperature for computing erection conditions is 60F.  Maximum temperature shall be assumed as 130F in computing sag under this condition.