Wood pole structures for electrical transmission lines [electronic resource] : recommended practice for design and use / prepared by the Task Committee on Recommended Practice for Wood Pole Structures for Electrical Transmission Lines of the Structural Engineering Institute of the American Society of Civil Engineers ; edited by James M. McGuire, P.E., Otto J. Lynch, P.E., Vicki Schneider, P.E., Jaron T. Reay, P.E., S.E., Timothy P. Wachholz, P.E., S.E., and Nelson G. Bingel III