Sag and tension calculations for cable and wire spans using catenary formulas

IT IS generally agreed that, in order to obtain accurate solutions of sag and tension problems involved in stringing electric power line conductors, it is necessary to use catenary formulas. The basic formulas are, of course, well known In order to utilize them, however, a great amount of laborious calculating is required. Certain short cuts in these calculations have been evolved, notably by James S. Martin whose published tables and method have proved of great help to engineers in simplifying sag calculations.