. Building and repairing railways ... : Forming one of the series of the volumes comprised in the Revised and enlarged edition of The science of railways, . Box Kail. Barlows * Saddle Back Rail, laid without support*. Triangular Stringer capped with iron. Fig. p. CHAPTER II. THE RECONNOISSANCE. THE FIRST STEP IN RAILWAY CONSTRUCTION. In locating a new railway line or extendingan existing one, many factors must be taken ac-count of, such as the cost of the proposed lineconsidered in relation to its probable revenue;the cost of operation and maintenance; and thefinancial resources of the owners.


. Building and repairing railways ... : Forming one of the series of the volumes comprised in the Revised and enlarged edition of The science of railways, . Box Kail. Barlows * Saddle Back Rail, laid without support*. Triangular Stringer capped with iron. Fig. p. CHAPTER II. THE RECONNOISSANCE. THE FIRST STEP IN RAILWAY CONSTRUCTION. In locating a new railway line or extendingan existing one, many factors must be taken ac-count of, such as the cost of the proposed lineconsidered in relation to its probable revenue;the cost of operation and maintenance; and thefinancial resources of the owners. From anoperating point of view it is desirable that theroute shall be as direct as possible, a straight linedrawn between the termini would be the ideal,but other considerations intervene, such as themost effective and profitable service that can berendered the population within the territory, thecost of construction first and the expense ofmaintenance and operation afterward, the effectof the competition of existing or possible lines orother forms of transportation, etc.^ When it is desired to construct a new line be-tween given points or extend an old one to a cer-tain point, the first things to know before


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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1906