. Electric railway journal . iffness across the line to meet the maximum windeffort. Further, other things remaining unchanged, in-creasing or decreasing the sag decreases or increases thepull in exactly the same relation. For sags which arequite small in proportion to length of span, a veryslight decrease or increase in the length of the con-ductors or, what is practically the same, an equal in-crease or decrease in the distance between supportswithout change in the length of conductor between themmakes a very considerable decrease or increase in thesag. As a result there is a corresponding i
. Electric railway journal . iffness across the line to meet the maximum windeffort. Further, other things remaining unchanged, in-creasing or decreasing the sag decreases or increases thepull in exactly the same relation. For sags which arequite small in proportion to length of span, a veryslight decrease or increase in the length of the con-ductors or, what is practically the same, an equal in-crease or decrease in the distance between supportswithout change in the length of conductor between themmakes a very considerable decrease or increase in thesag. As a result there is a corresponding increase ordecrease in the pull. A difference in pull, if not exces-sive, is automatically balanced by a small deflection ofthe support. In case one conductor breaks, the frametwists as well as bends, but if structural connectionsand wire ties are good it will usually hold up, and inmany cases can be repaired. The anchor towers for flexible construction are usu-ally standard type square towers with such modifica- Mr? I — /,.
Size: 2629px × 951px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
