Overhead contact systems, construction and costs: Part I

This paper, written with special reference to the New Haven electrification, gives a brief analysis of the systems and points to be considered in equipping trunk lines with overhead catenary construction. The paper is sub-divided into five parts, viz: catenary systems, supporting structures, sectionalization, special construction and cost data. Under “Catenary Systems” a short description is given of the various types used on the New Haven, stating the conditions for which each is best adapted. The same applies to the supporting structures and sectionalization. Under “Special Construction” only the cross-overs and river crossings have been considered more fully, while other special work has only been mentioned, as it was not within the scope of this paper to go into the details of construction. With reference to the cost data: It should be borne in mind that the figures given apply to the New Haven construction which was installed in the section with greatest traffic density, also through thickly settled communities. Therefore, the figures given will be of little value for comparison or estimating unless these conditions are equated.