. Electric railway journal . Features of I. T. S. Transmission Line No. 1. Span of 857 ft. on new I. T. S. high-tension line. No. 2. One of the large dead-end towers spaced 1 mileapart in new I. T. S. high-tension line. No. 3. Derrick car on interurban line raising one of theintervening A-frame towers. No. 4. Narrow-base four-leg tower used in towns, show-ing double insulator tie employed on curves and old line atleft. No. 5. A few of the large towers were assembled, thenerected as shown here. No. 6. Most of them were assembled vertically in positionas shown here. No. 7. Setting the base secti
. Electric railway journal . Features of I. T. S. Transmission Line No. 1. Span of 857 ft. on new I. T. S. high-tension line. No. 2. One of the large dead-end towers spaced 1 mileapart in new I. T. S. high-tension line. No. 3. Derrick car on interurban line raising one of theintervening A-frame towers. No. 4. Narrow-base four-leg tower used in towns, show-ing double insulator tie employed on curves and old line atleft. No. 5. A few of the large towers were assembled, thenerected as shown here. No. 6. Most of them were assembled vertically in positionas shown here. No. 7. Setting the base section of one of the 8. Bolting the assembled A-frame to the base whileheld in position by derrick. Nos. 9 and 10. Assembling and erecting a narrow-basefour-leg tower. No. 11. Transmission line crossing December 17, 1921 Electric Railway Journal 1071 I. T. S. Builds New Tranmission Line A Thirty-two Mile AH-Steel Tower Line Has Been Erectedto Connect the Riverton and Decatur Power Plants-Some of the Construction Details Are Given THE Illinois Traction System was recently con-fronted with the necessity of increasing the avail-able power plant capacity serving the street railway,interurban and power and lighting load of the Decatur,111., district. There were two alternatives. One wasto increase the capacity of the Decatur power house;the other was to rebuild the transmission line connect-ing this plant with the railway substations en routeand the Riverton power station 32 miles away, wherespare capacity was available and where the conditionsfor increasing the capacity in the future are better thanat the Decatur plant. For these reasons, and since thepoles of the existing line had to be replaced anyway, thelatter plan was determined upon, with the result thatthe first steel-tower high-t
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