Highways and Highway Transportation by George R. Chatburn

CHAPTER VIII

346 words  |  Chapter 9

PLANNING HIGHWAY SYSTEMS: SELECTION OF ROAD TYPES 222 Object of a Road. Road Classification: Agricultural. Recreational, Commercial, Military. Problem of the Road Planner: Economy, Accommodation, Utilizing Existing Roads. Essentials to be Considered: Ruling Points, Branch Lines and Detours, Alternate Routes, Existing Highways and City Streets, Vested Rights, Widening Roads and Streets, Railroads, Trolley Lines, etc., Bridges, Culverts, Drainage, etc., Ruling Grades, Esthetics. Motor Transport Efficiency Outline, Highway System Unit: Arguments in Favor of National System -- Eliminates Sectional Differences, Gives Continuous Roads, Military Roads, Benefits of Example. State Systems -- Benefits. Procedure of Laying out a Road System: Commission, Determining Factors, Maps, Tentative System, Reconnaisance Survey -- What Shown, How Taken, Instruments; Hearings -- Object; Final Location -- Considerations, Traffic Census Advisable. Financial Considerations: First Cost, Upkeep, Traffic Census: Affects Location, Type of Road, Grades, Width, Foundations. Making a Traffic Census: Variation of Traffic -- Number of Counting Days, Hours Each Day, Weights, Observer’s Cards, Both Way Count, Weather, Stations -- Location of. Classification of Traffic: Object, Maximum Loads, Effect of Heavy Loads, Influence Units of Traffic -- British, French, Other Countries, Maryland, Massachusetts, Borough of Brooklyn; Suggested Form of Traffic Sheet -- New Jersey. Destructive Factors: Density of Traffic, Weight of Vehicles, Impact, Speed, Wrinkling, Sprung and Unsprung Weight, Tires, Pleasure Cars and Light Traffic to be Considered. Other Methods of Estimating the Amount of Traffic: Area Served, Tonnage Arising. Distribution of Traffic over Township Roads. Selection of a Suitable Type of Road. Taxpayers Allowed to Assist in Selection, Engineers to Suggest. Ideal Road: Qualities of -- Low First Cost, Durability -- Materials and Design, Resistance to Traction and Tractive Force -- Horse, Truck, Speed, Temperature, Roughness, Width of Tire, Diameter of Wheel, Table of Resistances; Resistance Due to Grade -- Formulas, Coefficient, Available Engine Effort; Slipperiness -- Type of Pavement, Climatic Conditions; Sanitariness -- Definition, Effect of Type of Road; Noisiness; Acceptability. Some Types of Roads and their Qualities: Earth, Sand-clay, Gravel, Macadam, Bituminous Macadam, Bituminous Concrete, Brick, Concrete, Creosoted Wood Block, Asphalt Block, Sheet Asphalt, Other Types. Comparison of Roads -- Specimen Tables.

Chapters

1. Chapter 1 2. CHAPTER I 3. CHAPTER II 4. CHAPTER III 5. CHAPTER IV 6. CHAPTER V 7. CHAPTER VI 8. CHAPTER VII 9. CHAPTER VIII 10. CHAPTER IX 11. CHAPTER X 12. CHAPTER XI 13. CHAPTER XII 14. CHAPTER XIII 15. 1. STORM KING HIGHWAY _Frontispiece_ 16. 2. THE APPIAN WAY 22 17. 3. MAP OF ITALY 24 18. 4. MAP OF ROMAN ROADS IN ENGLAND 26 19. 5. MAP OF THE NORTH-EASTERN PORTION OF THE UNITED STATES 36 20. 6. MAP 42 21. 1830. When the Railroads Entered the Industrial Arena, the Country 22. 7. MAP 54 23. 8. WAY BILL 66 24. 5. The DeWitt Clinton Locomotive--1831. 25. 1. Showing the Growth in the Size of Locomotives During the Past 26. 2. One of the New Gearless _Electric_ Locomotives Built by the 27. 12. TRANSPORTATION ACROSS DEATH VALLEY 126 28. 14. CHART OF THE ORGANIZATION OF THE U. S. BUREAU OF PUBLIC ROADS 29. 18. MOTOR OR RAIL-CAR 166 30. 5. Gaillardit’s Steam Carriage--1894. 31. 21. A NEW YORK CITY “STEPLESS” BUS 184 32. 6. Winton’s Racing Machine. 33. 23. HAULING BEANS BY MOTOR TRUCK AND TRAILER 200 34. 26. GIVING A MACADAM ROAD AN APPLICATION OF TARVIA BINDER 254 35. 32. A DANGEROUS CURVE MADE SAFE BY AN ARTISTIC CONCRETE WALL 364 36. 33. PIN OAK STREET TREES 388 37. 34. A COTTONWOOD WIND BREAK 388 38. 36. TRAFFIC GUIDES 442 39. 37. NEW YORK CITY TRAFFIC GUIDES 444 40. 40. A GIPSYING TOURING CARAVAN 458 41. CHAPTER I 42. 1767. Green[7] tells us that the main roads which lasted fairly well 43. 1. Methods of keeping the cylinder or steam vessel hot by covering it 44. 2. By condensing the steam in vessels entirely distinct from the 45. 3. By drawing out of the condenser all uncondensed vapors or gases by 46. 4. The use of the expansion force of steam directly against the 47. 5. The double-acting engine and the conversion of the reciprocating 48. 6. Throttle valve with governor and gear for operating the same, 49. Chapter III. 50. Book IX, Chap. 29; XXII, 15; XXIV, 8; George Bell & Sons, London, 51. CHAPTER II 52. 1740. Glowing reports were brought back by the few traders, hunters, 53. 820. Published by order of Congress, 13 Vol. Washington, 1825-37. 54. CHAPTER III 55. CHAPTER IV 56. 5. The DeWitt Clinton Locomotive--1831. 57. 1. Showing the Growth in the Size of Locomotives During the Past Twenty 58. 1900. The Larger is a _Mountain Type_ Engine. Both are Used on the C. 59. Chapter VIII, “Transportation,” Ginn & Co., New York. 60. CHAPTER V 61. 1916. Illinois voted $60,000,000 in 1920 eventually to be paid from 62. 1822. A most liberal definition of Post Roads is also given in the 63. 1917. U. S. Dept. of Agriculture. 64. CHAPTER VI 65. Chapter VII, and the motor truck, and with concerted action of the 66. 1. Modernizing locomotives.--Gross reparable deficiencies are pointed 67. 2. Locomotive operation.--The magnitude of the railways’ coal bill 68. 3. Shop organization improvements.--The sad and almost incredible 69. 4. Power-plant fuel savings.--The obsolete and wasteful condition 70. 5. Water-consumption savings.--The railroads’ expenditure in 71. 6. Service of supply savings.--The expenditure of the railways for 72. 7. Shop accounting savings.--Attention has been given to the matter 73. 8. Labor turn-over savings.--The industrial losses due to unnecessary 74. 9. Loss and damage savings.--Inquiry has been made into the amount of 75. CHAPTER VII 76. 5. Gaillardit’s Steam Carriage--1894. 77. 6. Winton’s Racing Machine. 78. Chapter V. It will only be necessary to say here that the psychological 79. CHAPTER VIII 80. 4. Those which are military. 81. 10. Motor trucks or drays 20 82. CHAPTER IX 83. CHAPTER X 84. 318. The petitioning power or influence of the several properties 85. CHAPTER XI 86. CHAPTER XII 87. CHAPTER XIII

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