CHAPTER XI 



FOREIGN LINES, CROSSINGS, AND CONNECTIONS 

 Section 65 Location on Poles of Foreign Lines 



When a Forestry Branch line is attached to a pole carrying a telegraph circuit, 

 the former should be located at least % ft. from the nearest telegraph wire. This 

 same clearance should be maintained between a Forestry Branch wire and any other 

 wire on the same pole that does not belong to the same system. Forestry Branch 

 lines should not be attached to poles carrying electric light, power, or high-tension 

 transmission lines. A grounded line should never be strung on poles carrying tele- 

 graph circuits or other telephone circuits either grounded or metallic. Use a metallic 

 line. 



Section 66 Crossings 

 1 RAILWAY RIGHTS OF WAY 



Railway rights of way should be crossed at right angles. All such crossings 

 must be made in accordance with Order No. 231 of the Board of Railway Commis- 

 sioners for Canada. (See Appendix D.) 



2 FOREIGN LINES 



Whether to cross over or under foreign lines will be determined by the character 

 of their construction. If the foreign lines are well constructed and well maintained, 

 they should be crossed underneath at a distance of not less than 4 ft. below their 

 lowest wire, unless this would bring the Forestry Branch line too close to the ground. 

 In that case a crossing should be made over the foreign line, with a distance of not 

 less than 4 ft. between the lowest part of the telephone line amd the highest wire of 

 the foreign line. If the construction or maintenance of the foreign line is poor, 

 the Forestry Branch line should in every case pass overhead. 



3 ROADS 



If the line following a road, crosses from one side to the other, the crossing poles 

 should be braced., or guyed, and a figure 8 tie used. The wire should be strung at 

 least 16 ft. above the road, or even higher if required by provincial law 



4 CROSSINGS OVER 500 FT. IN LENGTH 



Crossings more than 500 ft. in length may involve the use of steel-wire, special- 

 strain insulators, towers, or bridge work, and special "A" or "H" construction. Before 

 any construction is undertaken, the district inspector should be asked 1 to prepare 

 proper specifications. 



5 HIGH-TENSION TRANSMISSION LINES 



Contact at any point between a telephone line and a high-tension transmission 

 line endangers both the entire telephone system and the lives of those who use it. In 

 all cases when a high-tension transmission line is to be crossed by a Forestry Branch 

 telephone line, instructions should be obtained from the district inspector. Trans- 

 mission lines should be given as wide a berth as possible. If it is necessary to run 

 close to one, pole-line construction should be used. 



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