scope:

Design of Steel Transmission Pole Structures specifies requirements for the design, fabrication, testing, assembly, and erection of cold-formed tubular members and connections for steel electrical transmission pole structures. Structure  components (members, connections, guys) are selected to resist factored design loads at stresses approaching yielding, buckling, fracture, or any other limiting condition specified in this standard. Distribution, substation, communication, and railroad electric traction structures are not included within the scope of this standard.

Units of measurement herein are expressed first in English units followed by the International System (SI) units in parentheses. Formulae are based on English units, and thus, some formulae require a conversion factor to use SI units. The appropriate conversion factor is given following each formula.