404 



ALTERNATING CURRENTS 



Steel poles are ordinarily made of four main members sup- 

 ported and braced by lattice work, Fig. 369, and are usually set 

 in concrete. This typo of pole is strong and, if painted occa- 



FIG. 369. Steel pole carrying high 

 voltage to E. St. Louis & Suburban Ry. 

 Co. (Archbold-Brady Co.) 



FIG. 370. Archbold-Brady tower, 

 254 ft. high, at Thames River cross- 

 ing, Montville, Conn. 



sionally, has a long life. It does not require a wide right of 

 way. It is particularly useful in mill yards and along railroad 

 tracks, where the space is limited. Except for moderate heights, 



