DS-P18 NSWR Overhead Wires, Masts and Portals 1968
SHEET P18 - OVERHEAD WIRES, MASTS, and PORTALS, c.1968
This sheet documents the typical masts and portals and their associated span and dropper wires, that were used c.1968 for the electrification of the NSWGR Sydney suburban and interurban rail system. Elevations, Plans, and Sections are shown at 1:87.1 scale.
The sheet includes dimensioned details of the masts as used for portals with channel and trussed bridges, cantilever masts, and catenary constant tension anchor masts. The types and sizes of the wires used, and the sizes of steel members, are noted. The arrangements of pull-off arms for straight (tangent) and curved (superelevated) track, for both positive and negative radial loads, and for single or double contact wires, are shown.