LIST OF TABLES

Table 4a. Economic Span-Lengths for Double-Track, Steam-Railway Bridges

on Sand Foundations at Various Depths below Extreme Low-Water 24

CHAPTER V

ECONOMICS OF ALLOY STEELS

Table 5a. Heat-Treated Chrome Steel with and without Molybdenum 38

Table 5b. Tensile Test on Chromol Steel 38

Table 5c. Tensile and Dynamic Tests on Nichro Steel 39

Table 5d. Tensile and Dynamic Tests on Nichromol Steel 39

Table 5e. Tensile Tests on Chrovan Steel 40

Table 5f. Tensile Tests on Chrovanmol Steel 40

Table 5g. Tensile Tests on Nickel Steel 41

Table 5h. Tensile Tests on Nicmol Steel 41

Table 5i. Tensile Tests on Carmol Steel, No. 1 42

Table 5j. Tensile Tests on Carmol Steel, No. 2 42

Table 5k. Tensile Tests on Chromol Steel (Untreated) 43

Table 5l. Tensile Tests on Chromol Steel (Treated) 43

Table 5m. Resume of Findings and Deductions 51

CHAPTER XI

COMPARATIVE ECONOMICS OF CONTINUOUS AND NON-
CONTINUOUS TRUSSES

Table 11a. Summary of Weight Ratios-Divided Triangular Trussing 80

Table 11b. Summary of Weight Ratios-Petit or Pratt Trussing 81

CHAPTER XIII

COMPARATIVE ECONOMICS OF CANTILEVER AND SUSPENSION
BRIDGES

Table 13a. Dr. Steinman's Weights of Metal 103

Table 13b. Comparison of Substructure Costs 104

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